Develop Bugs

[Q] Need a little help with the 3G connection

My problem is that my G2 shows that it connects to 3G/UMTS but i can't get it to connect to the mobile data network, meaning no internet despite 3G connection (mobile network state: disconnected, but mobile network type: UMTS).
I tried the different APNs of my carriers but to no avail. I have an unlocked G2 and my country supports the 3G/UMTS band of 2100, which the G2 also supports.
So the main question is: How do i get it to go from 'Mobile network state: disconnected' to 'Mobile network state: connected'?
Im from the Philippines and any help/suggestions/tips would be greatly appreciated

juanito05 said:
My problem is that my G2 shows that it connects to 3G/UMTS but i can't get it to connect to the mobile data network, meaning no internet despite 3G connection (mobile network state: disconnected, but mobile network type: UMTS).
I tried the different APNs of my carriers but to no avail. I have an unlocked G2 and my country supports the 3G/UMTS band of 2100, which the G2 also supports.
So the main question is: How do i get it to go from 'Mobile network state: disconnected' to 'Mobile network state: connected'?
Im from the Philippines and any help/suggestions/tips would be greatly appreciated
Click to expand...
Click to collapse
Tmobile USA G2 only supports 3G Band IV (1700/2100 PAIR).. all the documents i seen doesn't show 3G Band I (2100) support.. so im sure it'll only work for AWS/Band IV networks.

i beg to differ man.. i read on some threads here that the G2 does indeed support band I (2100). One dude from singapore managed to make his G2 work on their local carriers, some other owners have brought their unlocked G2 to other countries and had no problems connecting to the local 3G network. So I guess it's just a matter of inputting the right APN setting for my local carrier.

Indeed, T-Mobile's own official support page shows Band I (2100) support for the G2, even though HTC's own spec sheet doesn't.
http://support.t-mobile.com/doc/tm24233.xml?&A2L.SERVICE=FeatureSummary

thanks for backing me up bro'... now all i need is for someone to shed light on my query lol anyway, any reply/suggestions/tips would be of great use. thanks!

steviewevie said:
Indeed, T-Mobile's own official support page shows Band I (2100) support for the G2, even though HTC's own spec sheet doesn't.
http://support.t-mobile.com/doc/tm24233.xml?&A2L.SERVICE=FeatureSummary
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Click to collapse
Well that's good news! It would be dumb to not include the main euro 3G band.
Sent from my T-Mobile G2 using XDA App

juanito05 said:
My problem is that my G2 shows that it connects to 3G/UMTS but i can't get it to connect to the mobile data network, meaning no internet despite 3G connection (mobile network state: disconnected, but mobile network type: UMTS).
I tried the different APNs of my carriers but to no avail. I have an unlocked G2 and my country supports the 3G/UMTS band of 2100, which the G2 also supports.
So the main question is: How do i get it to go from 'Mobile network state: disconnected' to 'Mobile network state: connected'?
Im from the Philippines and any help/suggestions/tips would be greatly appreciated
Click to expand...
Click to collapse
Unlocked with an unlock code, unlocked from the manufacturer, or unlocked following the Sim unlock, SuperCID, S-OFF guide in the dev section? If it is the former, find your way over to the dev forum and get the thread to unlock per scotty2's method.

G2/Desire Z 3G connection
Hey, if no one sorted this out for you yet: had the same problem here. since i live in australia, i found a solution for me via ausdroid.net; search for apns.
if you fine the settings for your local providers (ie in the Phillipines) and then you manually input the apn, it should sort the problem. cheers

[Q] Change 3G band to European GSM 900/1800

A family member gifted me a Galaxy S4, however it is the SGH-M919. I currently live in Europe and 3G bands in my region are GSM 900/1800. At the moment I can't access 3G and any other type of data for that matter (LTE is not supported here). Is there a way to change T-mobile 950 and 1900 bands to my region ones?
Thanks for taking your time to answer

Sadly not.
Since the radio does not support those frequencies for hsdpa

TheArtiszan said:
Sadly not.
Since the radio does not support those frequencies for hsdpa
Click to expand...
Click to collapse
So there's no way to fix it?

Hello Flex,
I have the same phone "Samsung S4 SGH-M919 - Tmobile" and I live in Hungary, it works fine with me all you have to do is just to switch form WCDMA/GSM to any other option "like GSM only" then back to WCDMA/GSM as a kind of refresh and the 3G will work fine after that, you can find this inside Settings > More Networks > Mobile Networks > Network mode, but unfortunately you have to do this every time you restart your device.
There is also another alternative solution is to reset the Access point names to default, you can find this inside Settings > More Networks > Mobile Networks > Access Point Names.
to be honest I don't know the reason of this error, but try what I described and tell me if it works with you.
Good Luck

Well. I have the exact same phone and have tried several ROMs, either custom or stock and basebands also. Nothing seems to work. The very few users who reported it was working didn't provide much evidence of it. Even Wikipedia says no 3G 900MHz availability for this phone. A simple edit to NV 1877 values won't solve it. I've tried that too.

Question for AT&T LTE users

So I get LTE but as soon as I get on a call signal goes to H and I cant use data/apps while on the call. Am I using the wrong APN settings, or wrong radio maybe? Any settings help would be great, or if you can confirm also. Thanks.

Mine nexus 6 did same thing. I'm not sure that the data still work or not but everytime I on call I see LTE Icon change to H like you said

It's one of 2 things.
Either VoLTE is not turned on on your device
Or ATT does not support VoLTE in your area.
First one is fixable. Second one is not.
Sent from my MI 5 using Tapatalk

TheDriller said:
It's one of 2 things.
Either VoLTE is not turned on on your device
Or ATT does not support VoLTE in your area.
First one is fixable. Second one is not.
Sent from my MI 5 using Tapatalk
Click to expand...
Click to collapse
AT&T doesn't support VoLTE on any phones that aren't sold by them.

StykerB said:
AT&T doesn't support VoLTE on any phones that aren't sold by them.
Click to expand...
Click to collapse
Then that would explain that I would think

LTE is data only, so when u go on a voice call it will got to hsdpa or 3g bc that is voice and data, so it is normal

Bradl79 said:
LTE is data only, so when u go on a voice call it will got to hsdpa or 3g bc that is voice and data, so it is normal
Click to expand...
Click to collapse
Please don't spread information that's no longer the 100% truth. AT&T, Verizon, and (for a while now) T-Mobile offer calling over their LTE network, dubbed VoLTE (Voice over LTE). It allows voice packets to travel over the LTE network instead of legacy/3G and older networks.
The way the standard it set up, devices made more recently have software and hardware support for it, but as carriers have certification processes for their network, not all devices work cross-carrier. Most notably, iPhones (bleh) work cross-carrier because of the way their network configuration is provisioned (device identifies what network it's on, and downloads carrier configuration for that particular network). Some Android devices work cross-carrier (Nexus 6P and 5X), but the manufacturers of Android devices designing unlocked devices for some reason aren't certifying on AT&T, maybe because of cost or complexity.
Therefore, there are 3 main reasons VoLTE won't work on a device:
1) Not in a VoLTE area
2) VoLTE not enabled (this could encompass the option simply being disabled per the user)
3) VoLTE being restricted (AT&T restricting access because the device isn't certified, and/or the device not being capable)
Read up more on the requirements for AT&T (specifically) here:
http://att.com/hdvoice

balleron24z said:
Please don't spread information that's no longer the 100% truth. AT&T, Verizon, and (for a while now) T-Mobile offer calling over their LTE network, dubbed VoLTE (Voice over LTE). It allows voice packets to travel over the LTE network instead of legacy/3G and older networks.
The way the standard it set up, devices made more recently have software and hardware support for it, but as carriers have certification processes for their network, not all devices work cross-carrier. Most notably, iPhones (bleh) work cross-carrier because of the way their network configuration is provisioned (device identifies what network it's on, and downloads carrier configuration for that particular network). Some Android devices work cross-carrier (Nexus 6P and 5X), but the manufacturers of Android devices designing unlocked devices for some reason aren't certifying on AT&T, maybe because of cost or complexity.
Therefore, there are 3 main reasons VoLTE won't work on a device:
1) Not in a VoLTE area
2) VoLTE not enabled (this could encompass the option simply being disabled per the user)
3) VoLTE being restricted (AT&T restricting access because the device isn't certified, and/or the device not being capable)
Read up more on the requirements for AT&T (specifically) here:
http://att.com/hdvoice
Click to expand...
Click to collapse
So how do you enable on the OP3 with AT&T?

SysAdmNj said:
So how do you enable on the OP3 with AT&T?
Click to expand...
Click to collapse
You can't, only thing that would remotely make it work is if your imei was set up as a HDVoice supported phone in AT&T's system (s6, s7, note 5, note 7, iphone, etc). Though that likely won't work either since it'll try to provision the VoLTE and fail and yea.

AT&T does not use "Standard" VoLTE, so even if the phone supports it (like the OP3 does) and they were to allow the IMEI, it still wouldn't work. Phones have to have specific code from AT&T to do their HDVoice (according to their own customer service postings in their forums)

Verizon SIM Data working

So i have an activated Verizon SIM that I was able to get semi-working on my OnePlus 3. Only data is working though. Calls and text don't seem to work.
I can only get service if I select "LTE" as my Preferred Network Type. I've tried multiple other combinations of GSM, LTE, CDMA, and WCDMA, and TD-SCDMA and none of them worked. Only "LTE".
I know this phone doesn't have the CDMA radio, but I feel like I should be able to get 3G or H+ on Verizon. Any suggestions on other Preferred Network Types to try? There's a ton of options, I've only had luck with LTE (and as I said, that was data only).
Is there a way to tell if I'm using a different antenna for the Verizon SIM? My main carrier is T-Mobile.

Bsanborn said:
So i have an activated Verizon SIM that I was able to get semi-working on my OnePlus 3. Only data is working though. Calls and text don't seem to work.
I can only get service if I select "LTE" as my Preferred Network Type. I've tried multiple other combinations of GSM, LTE, CDMA, and WCDMA, and TD-SCDMA and none of them worked. Only "LTE".
I know this phone doesn't have the CDMA radio, but I feel like I should be able to get 3G or H+ on Verizon. Any suggestions on other Preferred Network Types to try? There's a ton of options, I've only had luck with LTE (and as I said, that was data only).
Is there a way to tell if I'm using a different antenna for the Verizon SIM? My main carrier is T-Mobile.
Click to expand...
Click to collapse
I was a VZW user when I got the OP3 and I struggles with trying all the APN options even calling VZW to set some custom APN but nothing worked well. I never got LTE on 3g at best but point of ever having data and voice at the same time was no hope. With the frustration and VZW seeming to never ready go GSM I just moved over to ATT. I also have a TMobile account but only for house not my cell line.

US Verizon Note 4 on Canada Wind Mobile

Hello XDA-ers!
I have an old Verizon Note 4 that just got out of the contract payment, and now want to give it to a friend who is off in Canada! His current carrier is Wind Mobile (which based on frequencycheck.com and their site, uses UMTS AWS-1 (1700/2100) ).
I have unlocked my bootloader and rooted my Note 4, and even got Cyanogenmod (what I am running now) working on it. I went through the thread on the Samsung S5 XDA forum to unlock additional 3G and LTE bands, but had dubious results (the first LTE NV section didn't persist after reboot while the second one did.)
After all of that, I popped in my friend's T-Mobile SIM Card/my mother's Project Fi SIM, and LTE worked! LTE Discovery said it was on Band 4, so I thought all was well! Until I tried to make a phone call. One of two things would happen when I would make a call based on what settings I messed with (mentioned below in the *#*#4636#*#* menu): It would either say "Dialing..." forever, or start making short high-pitched beeps before hanging up while saying "Call Ended."
According to LTE Discovery, there was no GSM network it was attached to. And when I tried to change the cell network in the *#*#4636#*#* -> Phone settings -> Preferred network or the Settings -> Cellular Network -> Network Type (LTE, GSM, etc) to something relating to WCDMA/GSM, it would just go back to the previous one I had chose/a similar one that did not have either of the two (exceptions to this were some with LTE, then Global and the ones with a lot of networks).
If someone could please guide me through these last few steps, I'd be so happy!
Thanks in advance,
- Tony