Develop Bugs

[Q] GT-N7100 incorrectly shows roaming on T-Mobile USA

Hi,
I just received an unlocked International Galaxy Note II in the US. Ordered from Handtec in the UK, and the phone appears to be the French model. I have observed what I think is a problem when trying to use the phone on T-Mobile USA.
I put my T-Mobile USA SIM card in the phone, and the phone thinks I am roaming. Uhhhh no. It's a T-Mobile USA SIM card on the T-Mobile USA network. It is NOT roaming. Now, it probably doesn't have any impact beyond the "R" notifier, and a "Roaming" page which shows up on TouchWiz, but it DOES make me feel very uneasy. I have to enable "Data use while roaming" to be able to use data while on my home network!! It's crazy!
To those who will point out, yes, I know that T-Mobile USA has their 3G currently on the AWS 1700/2100 band, which the Note II does not support. I am therefore using EDGE with this phone. (Yes the data speeds suck, but T-Mobile's refarming will make this problem go away in the next few months). Even though I am on EDGE, I am not "roaming" unless the Note II's definition of roaming is different from mine. I am still on the home network, regardless of whether I am on 2G or 3G.
Has anyone else seen a problem like this?
If I can't figure this out in the next day or two, I may return the Note II and just wait another month or so for the T-Mobile US version. (Probably that's what I should do anyway, but I figured the GT-N7100 would get more developer support).
Hope someone can help!
Thanks!
Edit: I forgot to add - I also have and unlocked international Note 1 GT-N7000 and an unlocked iPhone 4. Neither possess the T-Mobile USA 3G band, and neither of which show roaming when I'm using T-Mobile USA. So, either T-Mobile did some funky network work today which changed something, or there is something different (and possibly a bug) about how the Galaxy Note II determines if it's roaming.

Unfortunately I cannot be of any assistance to your issue, just wanted to comment however. I find it very odd that ALL Note II's don't work on every frequency. Bear with me, I'm under the impression that they are identical hardware wise, every version. So, maybe it's a simple matter of flashing a different radio.img? Not that there are any available currently, but there will be shortly. I hope (think) it will be similar to the ATT Note on Tmo. Hopefully it works out better though. We still don't know if the Tmo Note II will be HSPA+42 or not, but it will support next years Tmo LTE.
So, as of now, this is a little bit of a disappointment for Tmo customers looking for the N7100. Hope you can find a workaround for at least HSPA+21 soon :good:

ccampbell1 said:
Hi,
I just received an unlocked International Galaxy Note II in the US. Ordered from Handtec in the UK, and the phone appears to be the French model. I have observed what I think is a problem when trying to use the phone on T-Mobile USA.
I put my T-Mobile USA SIM card in the phone, and the phone thinks I am roaming. Uhhhh no. It's a T-Mobile USA SIM card on the T-Mobile USA network. It is NOT roaming. Now, it probably doesn't have any impact beyond the "R" notifier, and a "Roaming" page which shows up on TouchWiz, but it DOES make me feel very uneasy. I have to enable "Data use while roaming" to be able to use data while on my home network!! It's crazy!
To those who will point out, yes, I know that T-Mobile USA has their 3G currently on the AWS 1700/2100 band, which the Note II does not support. I am therefore using EDGE with this phone. (Yes the data speeds suck, but T-Mobile's refarming will make this problem go away in the next few months). Even though I am on EDGE, I am not "roaming" unless the Note II's definition of roaming is different from mine. I am still on the home network, regardless of whether I am on 2G or 3G.
Has anyone else seen a problem like this?
If I can't figure this out in the next day or two, I may return the Note II and just wait another month or so for the T-Mobile US version. (Probably that's what I should do anyway, but I figured the GT-N7100 would get more developer support).
Hope someone can help!
Thanks!
Edit: I forgot to add - I also have and unlocked international Note 1 GT-N7000 and an unlocked iPhone 4. Neither possess the T-Mobile USA 3G band, and neither of which show roaming when I'm using T-Mobile USA. So, either T-Mobile did some funky network work today which changed something, or there is something different (and possibly a bug) about how the Galaxy Note II determines if it's roaming.
Click to expand...
Click to collapse
That happened to me as well using my International Galaxy S3, I dug into it for about a month and trust me, it's something with the phone detecting that it can't connect to the HSPA+ bands it supports, and when it "defaults" down to EDGE it considers it "Roaming". Stop digging for answers, I was at it for weeks, this is the reason.
You wont get charged for roaming or anything though, so use EDGE until T-Mobile's refarming finally happens; I waited for 2 months and nothing, so I jumped ship and got Straight Talk. I use over 15 GB of data a month, no throttling, $45 bucks. :good:
Hope this helps, because NO ONE gave me a straight answer, Dont even bother calling T-Mobile, they're of absolutely no help. I flashed all sorts of custom ROMs, Kernels, Network Tools, Diagnostics, etc. trying to figure it out. It's just the way these Samsung phones (GT-I9300 and N7100 by the looks of it) work when their 3G/HSPA+ bands are not supported.
Cheers!

farfromovin said:
Unfortunately I cannot be of any assistance to your issue, just wanted to comment however. I find it very odd that ALL Note II's don't work on every frequency. Bear with me, I'm under the impression that they are identical hardware wise, every version. So, maybe it's a simple matter of flashing a different radio.img? Not that there are any available currently, but there will be shortly. I hope (think) it will be similar to the ATT Note on Tmo. Hopefully it works out better though. We still don't know if the Tmo Note II will be HSPA+42 or not, but it will support next years Tmo LTE.
So, as of now, this is a little bit of a disappointment for Tmo customers looking for the N7100. Hope you can find a workaround for at least HSPA+21 soon :good:
Click to expand...
Click to collapse
farfromovin,
I agree it's a complete pain why one model can't work worldwide - or even between carriers in one country, the US!! I'm not sure that all the revisions are the exact same hardware though. Certainly the different revisions will support different LTE bands from one another, different 3G bands (ie T-Mobile USA) and even different technologies (VZW, Sprint, US Cellular CDMA). Whether there is one uber radio chip that's the same in all versions, with different bits enabled here and there, I don't know. I would doubt that a chip currently exists to support all GSM, UMTS, LTE and CDMA bands in the one, but you never know.
I really cannot wait (getting super sick of it) until T-Mobile's 1900MHz refarming, and finally all UMTS/HSPA phones will work on pretty much any UMTS/HSPA network worldwide. But just as we finally get 3G harmony, LTE comes along with a zillion different bands, and we're back to where we were at the start of GSM, and the start of UMTS - all over again.
As far as getting the GT-N7100 to work on T-Mobile AWS bands - unless the radio supports that band somewhere, and can be enabled by some hacky flashing, I don't think there's much chance. I followed a thread for a while which was trying to do that for the original GT-N7000 and it ended up nowhere unfortunately.
I'd be very, very surprised if the T-Mobile US official Note II did not support DC-HSPA +42. Given how TMO pushes that, I don't think they'd sell a phone without it these days. I'm kind of surprised the GT-N7100 doesn't have it, to be honest, but I guess it's not yet that widespread, and most carriers will bypass it to go to LTE.
Cheers!

Ars-Hexis said:
That happened to me as well using my International Galaxy S3, I dug into it for about a month and trust me, it's something with the phone detecting that it can't connect to the HSPA+ bands it supports, and when it "defaults" down to EDGE it considers it "Roaming". Stop digging for answers, I was at it for weeks, this is the reason.
You wont get charged for roaming or anything though, so use EDGE until T-Mobile's refarming finally happens; I waited for 2 months and nothing, so I jumped ship and got Straight Talk. I use over 15 GB of data a month, no throttling, $45 bucks. :good:
Hope this helps, because NO ONE gave me a straight answer, Dont even bother calling T-Mobile, they're of absolutely no help. I flashed all sorts of custom ROMs, Kernels, Network Tools, Diagnostics, etc. trying to figure it out. It's just the way these Samsung phones (GT-I9300 and N7100 by the looks of it) work when their 3G/HSPA+ bands are not supported.
Cheers!
Click to expand...
Click to collapse
Hey Ars-Hexis,
Thanks so much for the reply. I googled about the same issue on the i9300 as you mentioned - and sure enough a couple of threads on androidcentral, and tmobile support - and all with pretty much a bunch of people going "what?" I think you're right, and this is either some crazy change which Samsung has made to the "S3" generation of phones, or it's an unintended bug which was introduced. I contacted Samsung support on twitter but I'm sure they'll tell me to go away since this is an international model and not sold or supported in the US.
I would love to have this properly reported to Samsung though because it is NOT correct behaviour, and I'm sure it does not meet the 3GPP standard behaviour. These phones' definition of "roaming" is frankly wrong. It's possible they know about the bug but don't care about it too much, because it only affects the minority of importers or travelers, and then only on the very few networks which use AWS band for 3G.
The phone and data works fine of course, so it's really a cosmetic annoyance. However, if I was actually outside TMO's network without knowing it (maybe camping on to some network on the Canadian border or something) then I'd never know if I was actually roaming or not. So the phone's roaming indicator, by being permanently false, is useless in the times when I'm actually roaming. Since this is not a likely scenario for me to be on the Canadian border and roaming onto an AWS-only network any time soon, I'll not worry too much about it.
Yes, I'm really sick waiting on this refarming. It's a huge undertaking of course, so I understand why. I do have a Straight Talk AT&T SIM which I got for my Galaxy Note 1, however I don't use it often for several reasons: haven't ported my number to it, am wary about data throttling or cut-off, and I find the data hit or miss on Straight Talk anyway. I heard stories about people being warned or cut off after 100MB in any day, but if you're saying 15GB and no throttling, it may be something I want to put to the test!
Thanks a lot for your reply! It's nice to know I'm not crazy!
Cheers!

ccampbell1 said:
Hey Ars-Hexis,
Thanks so much for the reply. I googled about the same issue on the i9300 as you mentioned - and sure enough a couple of threads on androidcentral, and tmobile support - and all with pretty much a bunch of people going "what?" I think you're right, and this is either some crazy change which Samsung has made to the "S3" generation of phones, or it's an unintended bug which was introduced. I contacted Samsung support on twitter but I'm sure they'll tell me to go away since this is an international model and not sold or supported in the US.
I would love to have this properly reported to Samsung though because it is NOT correct behaviour, and I'm sure it does not meet the 3GPP standard behaviour. These phones' definition of "roaming" is frankly wrong. It's possible they know about the bug but don't care about it too much, because it only affects the minority of importers or travelers, and then only on the very few networks which use AWS band for 3G.
The phone and data works fine of course, so it's really a cosmetic annoyance. However, if I was actually outside TMO's network without knowing it (maybe camping on to some network on the Canadian border or something) then I'd never know if I was actually roaming or not. So the phone's roaming indicator, by being permanently false, is useless in the times when I'm actually roaming. Since this is not a likely scenario for me to be on the Canadian border and roaming onto an AWS-only network any time soon, I'll not worry too much about it.
Yes, I'm really sick waiting on this refarming. It's a huge undertaking of course, so I understand why. I do have a Straight Talk AT&T SIM which I got for my Galaxy Note 1, however I don't use it often for several reasons: haven't ported my number to it, am wary about data throttling or cut-off, and I find the data hit or miss on Straight Talk anyway. I heard stories about people being warned or cut off after 100MB in any day, but if you're saying 15GB and no throttling, it may be something I want to put to the test!
Thanks a lot for your reply! It's nice to know I'm not crazy!
Cheers!
Click to expand...
Click to collapse
Hey there! Sorry I hadn't answered in such a long time. We'll actually I've found that the S3 (sold it) and the Note 2 (own it) some how cannot be tracked for data usage correctly by straight talk. It's quite interesting... I ported my number over from T-Mobile, so if you have an S3 with a T-mobile prepaid sim... I think you have nothing to lose! I'm in Dallas and regularly get around 3-4Mbits/S during high usage hours and 6-7Mbits/S after 7 pm when network usage goes down.
There have been 2 occasions over the past 2 months where I'm throttled for like an hour and suddenly it gets uncapped on its own (?!?!?) lol. Last month I used about 25 GB... It's insane. Btw, if you if get throttled for real (happened to me once), you can just call them and say your "Internets is slow" (act technologically challenged) and they'll reset it.
Ah 1 last thing: I got the at&T ST sim card when I switched.
Cheers!
Sent from my GT-N7100 using XDA Premium HD app

I just got my International Note 2 today, and I am using it on the T-Mobile network also. I am seeing that I am roaming but my data is off and I am just using wifi. I have turned off my phone and back on again and its still showing. But after reading this whole thread I am getting that is a bug or something along those lines is that correct? Thanks.

I really need to know
Sent from my Nexus 4 using Tapatalk 2

roaming
I am on prepaid tmobile and I have Roaming sign only in areas where I used to loose signal with my old phone . Basically when I go in Garage underground my signal starts getting weaker and weaker and then roaming kiks in and signal is up all the way . T-mobile does not charges for local roaming . If you use USA tmobile and you are in usa you are fine . My texts and voice are still the same rate for me . When I had Chinese rom it was showing all the time , now I flashed German t-mobile and R shows only sometime , but it does not bother me .
Hope this helps .

I too have a Note II (GT-N7100) I purchased in Thailand in December. I use it on the T-Mobile network and have the same issues with the "R" symbol. I am located in Tampa Bay area, Florida.
T-Mobile was indicating to me in January that this was an issue in weaker signal areas for their data network as they prepare to refarm it. Don't know if this explanation is entirely accurate, but I find in my local area that the R symbol goes away in certain areas and it behaves "normally". This includes the area where my T-Mobile office is located. It seems to be somewhat of a patchwork network, and for some reasons certain areas cause it to go into the Roaming mode.
I was just on a trip with stops in Los Amgeles, San Francisco, and Philadelphia and noted the same behavior in some of those cities: Getting normal signal indications in some places, and Roaming in others.

LTE on T-Mobile not working AT&T working

So I got my pixel xl from Google today. It works but I am on T-Mobile and it will not connect to LTE band 4 or 12 which are in my area. I have an ATT SIM for my work which I popped in and it works fine. That said without driving around Atlanta to try to find B2 I cannot tell if it is T-Mobile or the phone. Is anyone else on T-Mobile getting LTE connection at all?
So news today I can connect to LTE. Yesterday when I got the SIM in using *#*#4636#*#* I would get zero reception forcing LTE only. The phone would only connect to UMTS/HSPAP. Today after several restarts and calling T-Mobile and Google support it is now working. Here is what I did.
First Google is saying the update is supposed to affect LTE connecting issues.
Second make sure your SIM is properly registered with your provider. They should elevate the issue to higher tech support to have them look into it. This takes up to 24 hours.
Third go to your dialer do the *#*4636#*#*, go to phone info and change the preferred network type to LTE/UMTS or LTE/WCDMA (I haven't seen a difference between them). (This info is in other threads) Then restart your phone.
The problem seems to be how the phone determines what bands the network provider uses. It defaults to CDMA as the voice connection. For me this meant the phone was always connecting to UMTS only. It seems the firmware has some kind of default setting when it senses an error out the gate. The APN settings and preferred network settings needed to be updated and the phone restarted for it all to work. I now connect to band 4 LTE in my area. I hope this helps others.

I am also getting slow data speeds on my pixel XL connected to t mobile

My XL seems to get pretty consistent LTE service and good speed on T-Mobile.

LTE in Chicago working well.
Sent from my Pixel XL using Tapatalk

LTE in minnesota working fine.
Sent from my Pixel XL using Tapatalk

Google "Pixel LTE band 4 issue"

Weird. I'm getting pretty awesome Band 4 coverage in So. Cal. I also get Band 12 here, but Band 4 is what my phone tends to be connected to, which is fine since it tends to be significantly faster.

I'm in Oklahoma on t mobile getting slow connection compared to my friends. They each have a galaxy s6 edge and get between 70-80 MBs down sitting right next to me. I'm getting 14 MBs down. I just left sprint today for slow connection. Hoping to find a way to get this resolved ASAP.

mnguyen127 said:
Weird. I'm getting pretty awesome Band 4 coverage in So. Cal. I also get Band 12 here, but Band 4 is what my phone tends to be connected to, which is fine since it tends to be significantly faster.
Click to expand...
Click to collapse
I only experience the issue in downtown Toronto area and I contacted my carrier, Telus, in Canada. They confirmed that network signal in such area is mainly LTE band 4...

Just an FYI for those with the same issue. Google has asked for my shipping address after contacting them about the issue.

micah_675 said:
Just an FYI for those with the same issue. Google has asked for my shipping address after contacting them about the issue.
Click to expand...
Click to collapse
Which means replacement is on its way?

Not yet I'll update the thread when I get word.

I hope that result you issue, theres a lot of people with problems with LTE band 4 around the world
https://productforums.google.com/forum/#!msg/phone-by-google/OxkJ1Sn6i5c/E_2n5dFTBgAJ
micah_675 said:
Not yet I'll update the thread when I get word.
Click to expand...
Click to collapse

Have you tried swapping SIM cards?
I pulled the sim out of another working TMO iPhone6s and my PIXEL got LTE right away.

Have an update and updated the main post.

micah_675 said:
Have an update and updated the main post.
Click to expand...
Click to collapse
Thanks. I changed mine to LTE/WCDMA. Will know how it goes next week.

All seems to be working on my end.

I was having delays in mms being sent. I was using the default APN. About a week ago I changed the APN to the one recommended by T-Mobile. Mms sends instantly now just about. I don't think it's effected much on LTE but I didn't have problems before. Make sure your on the proper APN

I sure hope there isnt a recall..My XL hasnt even shipped yet and im on Tmo

I spoke with a t-mobile rep yesterday who helped me get my issue resolved. My main apn was set up incorrectly. Now I am connected to LTE and not just hspa+. I get generally good speeds most everywhere and I have tower right by my house that must go fairly unused.

T-Mo 5G owners. How has your connectivity/GPS been?

For those of you who got the Note 10+ 5G via TMobile, how has your general data connectivity been?
Has your GPS been consistent?
I'm really curious about whether or not the Note suffers the same issues as the McLaren 5G does with non-existent GPS with 5G. Thinking if it's worth switching over if the issue doesn't occur.
I did previously see posts about the issue being realized and fixed by Samsung and that it had to do with GPS location handoff between 4G and 5G. Was this for the international models or the US versions as well?
Thanks
Sent from my HD1925 using Tapatalk

No GPS issues with my T-Mobile Note 10+5G. I have used it several times. My area has areas of both 4G and 5G, so if there were handoff issues I haven't seen them. HTH

My T-Mo Note 10+ 5G GPS has been non-functional since I got it on Dec 9th, even after a launch day software update. I just got another update this morning to version ASL7, but I haven't gone out yet to test it. Here's hoping it's fixed, otherwise this device is going back to T-Mo.

T-Mobile just pushed an update today to version N976USQU1ASL7, which solved my GPS issues.

gmtom1 said:
T-Mobile just pushed an update today to version N976USQU1ASL7, which solved my GPS issues.
Click to expand...
Click to collapse
Good to know, I might just get it now to switch things up a bit.
Sent from my HD1925 using Tapatalk

Never mind - GPS is still nonfunctional whenever the phone is in 5G mode. Switching to LTE seems to improve GPS reception, but it's still not as good as my regular Note 10's GPS was. TMobile rep is saying it's because there's not enough 5G enabled towers in my area so the A-GPS cannot get a triangulation lock.

N920I - Weak 4G. Can no longer make or recieve calls. Possibly a local 3G tower was turned off.

My Galaxy Note 5 SM-N920I purchased December of 2015 can no longer make or receieve calls. My provider is TracFone via the Bring Your Own Phone program. I use their SIM card and it has worked all this time. Until recently the phones features have stopped working. I think they have been disabling the 3G in my area, as everyone is converting to 4G now.
Note 5 is supposed to support 4G but it's definitely been having issues. Text and internet still works. however texts are sometimes delayed on occasion, not always, usually it's fine. Data speed just now was tested at 10 mbps down, 3 mbps up. Signal bars are consistently low, regardless of physical location; inside, outside, other side of town, SIM status shows signal always between -108dBm and -118dBm. This is likely why I cannot make or receive calls, but the question is, why is this happening?
Like I said, I suspect they are shutting down 3G in this area, so the best theory I've been able to come up with is this: perhaps 4G has always sucked on this phone but I never noticed because it would fall back to the good 3G connection. Now that 3G is gone in this area, all I have to use is 4G which is a shoddy connection.
Further research has found in the early days of this phone there were numerous reports of weak/no signal. See these threads:
Fed Up With Terrible Reception
Hey all, I'm kind of venting here and at the same time hoping for some sort of direction because I'm absolutely fed up with my S6. I upgraded roughly a month and a half ago from an S4. My phone usage was below normal for the first week or two as I was busy with a variety of projects. As my...
forums.androidcentral.com
No signal/network on my note 5
Hi everyone, so I just got this note 5 N920P last two weeks but I noticed its OS was lollipop...waited for updates for 7.0 but nothing so I went ahead and downloaded Odin with latest firmware from samobile and did it my self, now here the problems start to show first of all this hands free...
forums.androidcentral.com
One theory was that the 4G antenna they used in the Note 5 / S6 was of poor design. Causing weak signal.
Things I have tried and did not work:
-Contacted TracFone. They confirmed the device is supported and provisioned correctly. They recommended a new SIM card.
-Replaced the SIM card with a brand new one
-Factory reset the device. It's running the stock Android 7.0 Nougat which was the last up to date version available.
-Tinkered with various service menus including *#2263# and *#0011#. Messing about with the LTE band settings didn't change the signal strength ever. Regardless of the LTE band, it stays in that -108 to -118 range, too weak for calling.
What can be done to fix this? Possible ideas:
-Internal antenna replacement, but this seems either expensive to have someone do, or extremely difficult to do oneself. Would it even make a difference? Has anyone tried this?
-Software. Could the issue have been introduced during one of the software updates? Planned obsolescence perhaps? Could we revert to an earlier firmware to potentially resolve this? has anyone tried this?
-Firmware. Could we upgrade the firmware to a later, unsupported version safely? Perhaps the issue was fixd in later Android versions but has not been adressed in older devices that are no longer updated.
I'm the kind of person who likes to use my things until they absolutely die. This Note 5 has been perfectly fine until recently. There is nothing wrong with it. It's still modern, fast, and has a great camera. I would HATE to have to replace a phone for such a stupid reason. Not only is money tight, but it's such a waste when this thing is still perfect apart from this weak 4G signal.
Has anyone else had this issue? Have you resolved it? Any help appreciated. Thank you.

Try a network reset.
Clear sim toolkit data.
Clear system cache.
The access point profile may need updating or maybe the sim?
Contact AT&T advanced tech support.

Question Horrible signal connectivity?

Hi all, I just recently bought this pixel 6 pro a few weeks ago and I've been having horrible connection issues. The main one that plagues me is when all of a sudden, for no reason, I lose mobile data connection. I have some bars of signal with the LTE or 5G icon but with an exclamation point in it. Or sometimes it just loses signal randomly like in the screenshot below. Both screenshots were taken minutes apart.
I've noticed this was an issue for most people and have posted about this here, but I haven't seen anyone complain about it recently. Is there a fix for this problem?

Unfortunately for a great manu people, myself included this phone has garbage reception. There is no known fix.

Me to

My troubles began after I updated the phone to A13 enrolling to Beta and then leaving it.
The problem was that the phone will be stuck to H+ all day although weI have good coverage of 4G and 5G in town. Sometimes the connection would just drop and I had to engage flight mode to reset it.
Yesterday I decided that I had enough and did the reset of network settings. Today I have noticed that the problem was solved. Now I have 4g and 5g as in the past. But the problem now is that the Internet just would not work from time to time although it shows full bars. Had to use aeroplane mode again today about 3 times.
It's very annoying to say the least. Had thoughts of changing the phone. Not even speaking about heating issues when on mobile. Horrible.

leafar1606 said:
My troubles began after I updated the phone to A13 enrolling to Beta and then leaving it.
The problem was that the phone will be stuck to H+ all day although weI have good coverage of 4G and 5G in town. Sometimes the connection would just drop and I had to engage flight mode to reset it.
Yesterday I decided that I had enough and did the reset of network settings. Today I have noticed that the problem was solved. Now I have 4g and 5g as in the past. But the problem now is that the Internet just would not work from time to time although it shows full bars. Had to use aeroplane mode again today about 3 times.
It's very annoying to say the least. Had thoughts of changing the phone. Not even speaking about heating issues when on mobile. Horrible.
Click to expand...
Click to collapse
I also have to occasionally switch on/off airplane mode when the phone cannot connect to the internet from time to time

i agree, terrible signal problems, all time. I`ll try to reset all network settings
for me it`s a disrespect from google to treat all final user like beta tester

Same here. Super slow connection even in areas with towers close by.

Been having this issue ever since I updated to Android 13.
Having only had the phone for 2 weeks, I took it to my provider who said all they can do is return it to Google. With both my eSIM and my physical sim dropping out together, apparently its an RIL problem. They did say that if it's just an issue with one SIM card, replacing it will fix it.

I think this can be solved downgrading to android 12.1 dev you can downgrade to android 12.1 without downgrade bootloader it's safe and don't brick your device because it's a android 12 that runs over android 13 bootloader. Keep in mind that this will erase your data permanently! Do a backup before do it

This has been happening since the phone came out. This is due to the old modem they are using from Samsung. There is no fix.

My coworker has this happen with his 6 Pro, while my 6 is perfect ironically. He has verizon, I got tmobile. He has to leave the store to make a call, but I don't. This has been for the last 6 months though

Teet1 said:
Hi all, I just recently bought this pixel 6 pro a few weeks ago and I've been having horrible connection issues. The main one that plagues me is when all of a sudden, for no reason, I lose mobile data connection. I have some bars of signal with the LTE or 5G icon but with an exclamation point in it. Or sometimes it just loses signal randomly like in the screenshot below. Both screenshots were taken minutes apart.
I've noticed this was an issue for most people and have posted about this here, but I haven't seen anyone complain about it recently. Is there a fix for this problem?
Click to expand...
Click to collapse
Weird because this phone has better signal than my gf s22U IV never had trouble with it dropping like at all, hope use get a fix

TonikJDK said:
Unfortunately for a great manu people, myself included this phone has garbage reception. There is no known fix.
Click to expand...
Click to collapse
Yup! It's crazy and makes me wary of staying with the Pixel line

kevinireland11 said:
Weird because this phone has better signal than my gf s22U IV never had trouble with it dropping like at all, hope use get a fix
Click to expand...
Click to collapse
P6P has better signal than the S22 Ultra? lol #troll

Visera said:
Been having this issue ever since I updated to Android 13.
Having only had the phone for 2 weeks, I took it to my provider who said all they can do is return it to Google. With both my eSIM and my physical sim dropping out together, apparently its an RIL problem. They did say that if it's just an issue with one SIM card, replacing it will fix it.
Click to expand...
Click to collapse
Had the phone sent away to Google for repairs as the issue ended up happening when I was showing my provider. Got it back and Google said there were "no issues" with it and they couldn't replicate it with either SIM type. Either they put out a hotfix or it magically went away, but I'll see how it goes after using it again.

Teet1 said:
Hi all, I just recently bought this pixel 6 pro a few weeks ago and I've been having horrible connection issues. The main one that plagues me is when all of a sudden, for no reason, I lose mobile data connection. I have some bars of signal with the LTE or 5G icon but with an exclamation point in it. Or sometimes it just loses signal randomly like in the screenshot below. Both screenshots were taken minutes apart.
I've noticed this was an issue for most people and have posted about this here, but I haven't seen anyone complain about it recently. Is there a fix for this problem?
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If you've got another phone (5G compatible), you can try to see if the problem is the phone, or the actual network coverage.
Also, something else you could do is switch to 4G and see if the problem persists.
The thing with 5G is that the coverage is really spotty. That's in general. I don't live in the US, so I don't know what the actual coverage is over there. But that's a general thing with 5G. It cannot penetrate as well as 4G, and even worse than 3G or 2G. When you increase frequency, you lose distance (coverage). So basically 5G needs a lot more repeaters to get proper coverage.
But you could try another phone in the exact same area. Oor..try to switch to 4G and see if the issue still occurs. You could also call the carrier and ask if they have any idea why is this happening.

arsradu said:
If you've got another phone (5G compatible), you can try to see if the problem is the phone, or the actual network coverage.
Also, something else you could do is switch to 4G and see if the problem persists.
The thing with 5G is that the coverage is really spotty. That's in general. I don't live in the US, so I don't know what the actual coverage is over there. But that's a general thing with 5G. It cannot penetrate as well as 4G, and even worse than 3G or 2G. When you increase frequency, you lose distance (coverage). So basically 5G needs a lot more repeaters to get proper coverage.
But you could try another phone in the exact same area. Oor..try to switch to 4G and see if the issue still occurs. You could also call the carrier and ask if they have any idea why is this happening.
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Facts, I changed from 5G to LTE as my preferred Network and have much better connectivity

HipKat said:
Facts, I changed from 5G to LTE as my preferred Network and have much better connectivity
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Same with me. I keep 5G turned off for a couple reasons.
1, battery life.
2. 4G is fast enough for me.
3. Better signal.

p51d007 said:
Same with me. I keep 5G turned off for a couple reasons.
1, battery life.
2. 4G is fast enough for me.
3. Better signal.
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Oh Battery life for sure. HUGE difference!