Develop Bugs

[Q] International HTC One X on AT&T US 3G problems

I'm running ARHD 5.1.0 on my international unlocked HTC One X.
I'm having a problem with my phone on AT&T. It is switching between H and 3G pretty often, and only H actually functions for data. This is pretty painful, especially when trying to stream Pandora.
I'm looking for help on how to analyse what is happening.
1. How can I see what band it is trying to use on 3G?
2. Is there a way to force it to always use H or EDGE, never 3G?
3. Is there a way to tune the 3G radio for AT&T USA?
4. Is it possible that now that the kernel source is released, the frequency issues can be fixed with kernel drivers?
According to Omega.net, here are the frequencies in my area:
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Thanks!

Quick additional questions:
Is AT&T screwing with my signal? Would it make sense to modify the /system/build.prop to masquerade as a different phone?
Would modifying the /system/build.prop allow me to disable all but UTMS-II and UTMS-V?
ro.ril.imc.band=900,1800,1900,850
ro.ril.imc.uband="UMTS_BAND_I","UMTS_BAND_II","UMTS_BAND_V","UMTS_BAND_VIII"

I'm going to try disabling fast dormancy and see how that goes ala this thread:
http://forum.xda-developers.com/showthread.php?t=1111581

So far this change has had no effect. I still can't run speedtest.net for example, because it drops from H to 3G, then renegatiates to H again.
All I did was change the build.prop and reboot. Any idea if I have to do something more?

What APN are you using? the default one?
Mine changes to 3G, but only when not using data.......I've had this with every phone besides the Galaxy Nexus which stayed on H most of the time.
But I haven't tried streaming music, as I dont haha...I have it all on my phone.
Try using the Phone APN.
Create a new apn and type in phone for "Name" and phone for "APN" leave the rest blank and save, then click it to enable

pewpewbangbang said:
What APN are you using? the default one?
Mine changes to 3G, but only when not using data.......I've had this with every phone besides the Galaxy Nexus which stayed on H most of the time.
But I haven't tried streaming music, as I dont haha...I have it all on my phone.
Try using the Phone APN.
Create a new apn and type in phone for "Name" and phone for "APN" leave the rest blank and save, then click it to enable
Click to expand...
Click to collapse
You are the MAN! The APN was set to wap.cingular. Using phone as the APN I'm finally getting some Speedtest.net results! I'm going to do more tests, but this looks good so far.

TheAndroidSwap said:
You are the MAN! The APN was set to wap.cingular. Using phone as the APN I'm finally getting some Speedtest.net results! I'm going to do more tests, but this looks good so far.
Click to expand...
Click to collapse
I just tried all of that. When I delete apn and set up new one with just "phone" typed in I get no signal at all?

iximages said:
I just tried all of that. When I delete apn and set up new one with just "phone" typed in I get no signal at all?
Click to expand...
Click to collapse
I made a new APN, in the name field I typed "phone" and in the APN field I typed "phone". Then saved, and selected it as the APN I wanted to use.

I did just that but it doesnt give me the option to select it after its saved....

I just received my one x from Singapore today and am not having any data issues. I picked the at&t network when I put the sim in and it just worked.
--Matt

mkosem said:
I just received my one x from Singapore today and am not having any data issues. I picked the at&t network when I put the sim in and it just worked.
--Matt
Click to expand...
Click to collapse
I have data no problem, but I am unable to use speed test to test my signal. I was told this was a apn issue

iximages said:
I have data no problem, but I am unable to use speed test to test my signal. I was told this was a apn issue
Click to expand...
Click to collapse
I spoke too soon. Speed tests were sort of working for me initially, but is working properly now after just blanking out the proxy and port lines on the default apn that it set up.
--Matt

mkosem said:
I spoke too soon. Speed tests were sort of working for me initially, but is working properly now after just blanking out the proxy and port lines on the default apn that it set up.
--Matt
Click to expand...
Click to collapse
I will try this out soon. Thanks mate
Sent from my HTC One X using xda premium

Removing the proxy and port seemed to get the same results as the phone APN.

Thanks for this, it solved my issue for my HOX too.

Extended roaming tweak still working on JB

Stock rom does not have national roaming option but the build.prop tweak which does the same thing still works.
Just add these lines to build.prop:
ro.roaming.extended=true
ro.roaming.extended_rule=1
It'd be nice if someone can confirm that this actually does reject foreign networks..

Barleyman said:
Stock rom does not have national roaming option but the build.prop tweak which does the same thing still works.
Just add these lines to build.prop:
ro.roaming.extended=true
ro.roaming.extended_rule=1
It'd be nice if someone can confirm that this actually does reject foreign networks..
Click to expand...
Click to collapse
Do you really need to edit build.prop for that? The .197 leak allows national roaming.. Are you sure you're looking in the right place or did they really remove it at the last instance?

Redstarr1 said:
Do you really need to edit build.prop for that? The .197 leak allows national roaming.. Are you sure you're looking in the right place or did they really remove it at the last instance?
Click to expand...
Click to collapse
It's not where you switch regular roaming on, beyond that I haven't seen any roaming options.

Where is the national roaming setting supposed to be?

Barleyman said:
Where is the national roaming setting supposed to be?
Click to expand...
Click to collapse
settings > more > mobile network > roaming
Envoyé depuis mon LT28h avec Tapatalk

Roaming Data? I see that its there , the second option
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National roaming is something different. It won't connect abroads but does at home. Majority of countries do not have in - country roaming possible if it's not the network you're meant to use. So you can turn national roaming on and not get huge phone bill when apps are updated on business trip but your virtual network operator works fine at home.

Same problem here in Spain with my virtual provider, I was fighting with them to correct the national roaming problem. Now I know this tweak will try in a few days when I can root the mobile.
A lot off thanks!
Sent from my LT26i using xda premium

This "tweak" changes the R of roaming that appears in some countries to H,E,G,...
I think he just does that

Kiamu said:
This "tweak" changes the R of roaming that appears in some countries to H,E,G,...
I think he just does that
Click to expand...
Click to collapse
Nuh-uh. With the build.prop setting in place you do not need to have roaming ticked at all in network settings. IF it rejects networks from other countries then it's same as "national roaming".

I was on eXistenZ at the time I said that there is a national roaming option (should have made a screenshot). Maybe it's because the author bases his apps on Xperia Z. With stock .200 there is indeed only the option to turn roaming on or off.

Kiamu said:
This "tweak" changes the R of roaming that appears in some countries to H,E,G,...
I think he just does that
Click to expand...
Click to collapse
Thank you !
I just discovered that I've H+ network... What are the benefit from H ?

Redstarr1 said:
I was on eXistenZ at the time I said that there is a national roaming option (should have made a screenshot). Maybe it's because the author bases his apps on Xperia Z. With stock .200 there is indeed only the option to turn roaming on or off.
Click to expand...
Click to collapse
National roaming tweak is fairly simple, just a few lines of code in framework. Plus the on/off setting bit. Technically tweaked phone "thinks" all the networks from your home country are OK to use and operator side blocks you from using the wrong ones. It was originally created by Cyanogenmod guys. So quite a few ROMs have it.
On the other hand it's surprisingly difficult to find modder who actually knows about compiling android from sources. Majority just add and remove some apps and maybe tweak build.prop. So getting that tweak into your favourite ROM can be rather hard.
So it's entirely plausible someone added that into Sony codebase. In worst case this just removes roaming notification so it'd be nice if someone has a chance to test if mobile data works across border with no warning.

Looks like .96 firmware requires this tweak unlike .200 if you don't want to enable data roaming everywhere.

LG G3 D855 Euro Model on Rogers Wireless - does LTE work ?

Hi all,
Just picked up the D855 euro version LG G3 and do not see any LTE options in the data section.
I only see GSM/WCDMA.
I entered the LTE mobile settings for rogers and only see "H", not even 4G...
Is there a menu where I can switch this ?
And will I be able to use LTE in Montreal on Rogers Wireless using the 700 / 2100 / 2600 bands ?
I notice it doesnt have AWS with 1700 /2100
I dont mind if it says 4G as long as I can get LTE speeds...
Any help would be much appreciated
Thanks

I'm seeing the same on mine (Starhub Singapore D855). I think 4G is some countries is considered a value added service. You may need to call it in and have it activated on your SIM. I plan to call them later today after work to confirm.

I got mine to work on Fido. I flashed the HKG firmware through the TOT/DLL method. Then I either choose band 4 or 7(can't remember) in developer settings (3845#*885#)
Flash method: http://forum.xda-developers.com/showthread.php?t=2799647 (Go say thanks to wolfgart!) There should also be a link to a guide to flashing. Also here are some screen shots if they help.
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Hope this helps!

Thanks so much
I actually got mine working by installing the app "LTE On Off" from the Google Play Store and selecting LTE/GSM/WCDMA
And entering Rogers LTE APN settings
Am getting 80MBPS download and 20MBPS upload
Works perfectly

Im trying to make mine work on US T-Mobile.
Sent from my LG-D855 using XDA Free mobile app

Go to your dialer and type 3845#*855# go to LTE only, then band selection. Chose band 4. Then in your regular settings enter the APN for T-Mobile, and change network selection GSM/WSPDA/LTE auto. Restart your phone.
Sent from my LG-D855 using XDA Free mobile app

antonkapt said:
Go to your dialer and type 3845#*855# go to LTE only, then band selection. Chose band 4. Then in your regular settings enter the APN for T-Mobile, and change network selection GSM/WSPDA/LTE auto. Restart your phone.
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
I did that. I also deleted lte configurations. In System/ apps/. Didn't do the trick. I flashed multiple KDZs and it didn't Work. It just doesnt have the right bands for it to work on Tmobile. So i ordered a G3 cat6.
Sent from my LG-D855 using XDA Free mobile app

antonkapt said:
I got mine to work on Fido. I flashed the HKG firmware through the TOT/DLL method. Then I either choose band 4 or 7(can't remember) in developer settings (3845#*885#)
Flash method: http://forum.xda-developers.com/showthread.php?t=2799647 (Go say thanks to wolfgart!) There should also be a link to a guide to flashing. Also here are some screen shots if they help.
Hope this helps!
Click to expand...
Click to collapse
OMG, can you please tell me how you did that? I've been trying to figure out step by step and I can't do anything! I downloaded Flashtool and when I tried to turn off the phone and put it in download mode, after plugging it in and opening up device manager, I can't see "ports" thus I can't change port to COM41. I've been stuck at literally the second step of this complicated process. I really would hate to see my G3 go to waste. Please help as I'm on the Rogers network.

kchan9 said:
OMG, can you please tell me how you did that? I've been trying to figure out step by step and I can't do anything! I downloaded Flashtool and when I tried to turn off the phone and put it in download mode, after plugging it in and opening up device manager, I can't see "ports" thus I can't change port to COM41. I've been stuck at literally the second step of this complicated process. I really would hate to see my G3 go to waste. Please help as I'm on the Rogers network.
Click to expand...
Click to collapse
Hmmm, try re-downloading and re-patching the flash toolkit, maybe something got screwed up there? Also try another USB port. if no try using another KDZ like Germany. Also go through Wolfgarts thread maybe someone had the same problem there.

I'd be interested in seeing how this is done for Rogers too..

Simple Fix
psxp said:
I'd be interested in seeing how this is done for Rogers too..
Click to expand...
Click to collapse
Very simply download the LTE On/Off app from the Google Play store, it allows you to set your network to include LTE, which the LG G3 855 does not do by default. Once you have set it to LTE/GSM/WCDMA you should be good to rock and roll. It worked great for me!

I needed Intelli3G to force LTE availability at all times else after a reboot (for example) it will drop to GSM/WCDMA only.

mogdanc said:
Very simply download the LTE On/Off app from the Google Play store, it allows you to set your network to include LTE, which the LG G3 855 does not do by default. Once you have set it to LTE/GSM/WCDMA you should be good to rock and roll. It worked great for me!
Click to expand...
Click to collapse
Thanks for the update. I ended up with a D852 and its been good. Haven't missed the FM radio yet. Wireless charging is a nice to have but I can live without it.

VoLTE Settings

Can someone please tell me where the setting is to turn off VoLTE.

Found it.
Go to settings and search for Phone click it scroll down to VoLTE.
Hope turning it off helps my battery.

memtenn said:
Can someone please tell me where the setting is to turn off VoLTE.
Click to expand...
Click to collapse
Open the phone app like you're going to make a call, click on more, then settings, call settings section, Voice over LTE Settings, Do Not Use VoLTE, then hit ok.

Depending on who you call most, VoLTE will actually help your battery.

I have a tmobile version of the s6 and i dont have the menu for turning on/off VoLTE..what to do?

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Sent from my SM-G925T using Tapatalk

This is how the menu looks like on my phone

Ziks said:
This is how the menu looks like on my phone
Click to expand...
Click to collapse
You aren't on latest firmware update, you need to check for latest update for your model.
Then update.
Pp.

Im on the latest firmware 5.1.1.
Is there a newer one?
Sent from my SM-G920F using Tapatalk

Maybe you need a 925T with tmobile in order to get the VoLte setting.
Pp.

Ziks said:
Im on the latest firmware 5.1.1.
Is there a newer one?
Sent from my SM-G920F using Tapatalk
Click to expand...
Click to collapse
Check your baseband version: Settings > About Device (all the way at the bottom) > Baseband Version. You should see a string like G920TUVS3DOJC, that's the latest update; not sure which one added VoLTE, but I know OJ7 had it. This page has a list of the versions.

Just for the record don't think the SM-920F has VoLte setting.
Pp.

PanchoPlanet said:
Just for the record don't think the SM-920F has VoLte setting.
Pp.
Click to expand...
Click to collapse
hi i checked and i don't have it in my s6 edge

to turn off VoLTE
memtenn said:
Can someone please tell me where the setting is to turn off VoLTE.
Click to expand...
Click to collapse
Hi there... Go to
Settings
Mobile Networks
VoLTE Call [uncheck]
Hope you find it.
I have a Samsung S6

motherchook67 said:
Hi there... Go to
Settings
Mobile Networks
VoLTE Call [uncheck]
Hope you find it.
I have a Samsung S6
Click to expand...
Click to collapse
Why would you uncheck it when it delivers clear voice..?

XDADEVX said:
hi i checked and i don't have it in my s6 edge
Click to expand...
Click to collapse
You need to update your phone.
My VoLte works so good I can see the words coming out of the speaker. Lol.
Pp.

PanchoPlanet said:
You need to update your phone.
My VoLte works so good I can see the words coming out of the speaker. Lol.
Pp.
Click to expand...
Click to collapse
haha you see the words
what u mean update ? I am on 5.1.1 there is no official 6.0 yet

XDADEVX said:
Why would you uncheck it when it delivers clear voice..?
Click to expand...
Click to collapse
There is a bug that causes Cell Standby to just eat through battery power. I've had mine off since I got my Edge but with all the updates I have not tried it again.
I may want to give it a try since I typically go into the band selection menu and lock in on LTE band 4 (band 12 at work has horrible speeds for data), but that causes me to miss calls since the phone can't switch to HSPA to take the call.

nest75068 said:
There is a bug that causes Cell Standby to just eat through battery power. I've had mine off since I got my Edge but with all the updates I have not tried it again.
I may want to give it a try since I typically go into the band selection menu and lock in on LTE band 4 (band 12 at work has horrible speeds for data), but that causes me to miss calls since the phone can't switch to HSPA to take the call.
Click to expand...
Click to collapse
Alright.. Well another useless feature..
Unless powerful battery fitted..
Thnx for advise..

XDADEVX said:
Alright.. Well another useless feature..
Unless powerful battery fitted..
Thnx for advise..
Click to expand...
Click to collapse
What I meant was to make sure you are up to date with all the carrier / manufacturer updates and you too can see the words floating out of the speaker, this VoLte is like magical unicorns and my battery lasts me a-long-time.
I can't remember when was the last time I plugged a charger wire into my phone.
Oh, I forgot I use a wireless charging pad :sly: ??? Lol.
Pp.

How to get to "field test mode: and see the Lte Band that the phone is connected ?

How to get to "field test mode: and see the Lte Band that the phone is connected ?
Hi.
LTE DIscovery app or any other app says LTE BAND UNKNOWN. I tried also *#*#4636#*#* and also at network type says LTE, unknown.
Do you know how to fix this ? Do you know how I can get to field test mode like in samsung code *#0011# ?
My phone is a zenfone 2 - 551ML.
Thanks !
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Which phone you're onto?

subhan143 said:
Which phone you're onto?
Click to expand...
Click to collapse
My phone is a zenfone 2 - 551ML.

Me too interested in knowing.

Has this phone been modified in any way? LTE discovery, etc. should have showed the band.
Sent from my ASUS_Z00AD using XDA Free mobile app

mrcamp said:
Has this phone been modified in any way? LTE discovery, etc. should have showed the band.
Sent from my ASUS_Z00AD using XDA Free mobile app
Click to expand...
Click to collapse
No no modification, no root. As it was from factory. Only installed all the push updates that asus made ...

I use this in dial:
*#*#4636#*#*
I don't know if this is the field test, but inside the first menu I can change the mobile network behavior.
Edit:
Sorry, didn't read all of your post, On my device the mode for 4g is "LTE/GSM auto (PRL)"
It connects in 4G and when the signal goes bad it reverts automatic to hsdpa.

Lte discovery shows band. Is that unknown referring to sim2?
Sent from my ASUS_Z00A using Tapatalk

ziddey said:
Lte discovery shows band. Is that unknown referring to sim2?View attachment 3509966
Sent from my ASUS_Z00A using Tapatalk
Click to expand...
Click to collapse
No is refering to sim 1 with lte. Maybe is not working in Greece.

cmvrgr said:
No is refering to sim 1 with lte. Maybe is not working in Greece.
Click to expand...
Click to collapse
Think it depends on user-submitted data. It doesn't work for me in Japan either - says the carrier but reports LTE, band unknown.

I can't understand the reason why we can't know the LTE band in stock rom.

Zalpa said:
I can't understand the reason why we can't know the LTE band in stock rom.
Click to expand...
Click to collapse
Good question. Is a good idea to post on asus forum your question http://www.asus.com/zentalk/forum.php
If many people do that they may find a solution.

LTE,unknown if you want it fix, you gotta write a petition to your telco and get them to script it.
most telco won't bother to do that as it is not important value. what is important to network engineers are the decibels, the LAC, maybe CID, the list rate, the smsc number etc.

sooty84 said:
LTE,unknown if you want it fix, you gotta write a petition to your telco and get them to script it.
most telco won't bother to do that as it is not important value. what is important to network engineers are the decibels, the LAC, maybe CID, the list rate, the smsc number etc.
Click to expand...
Click to collapse
But with the same company and different smartphone I was able to know the 4g band

This may help
If you use nova launcher and set up an activity widget, one of the activities is "field test mode". Set it up on the home screen and click it. Or use shortcut master to launcg the activity. Either way takes you to a menu i hadnt been to yet and it may provide answers. It has 4 options: UMTS, UICC, LTE & ASUS CUSTOM. In here you can change your band preferences and switch usb from vendor to asus usb