signal issue - Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help &

im on 4.1 and noticed it wasn't wanting to ring or text or connect to data on 2g but will on 3g
so I tried 4.3 didn't make a difference
what could be causing it not to work on 2g signal im using o2 uk I no spare sims to try another network

some strange reason if bars on 2g less then 3 it wont work could this be a issue with the antenna

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Signal strength

Is anyone using this phone in the US? How about Georgia? If so, are you having any problems with signal strenth? I am not getting any bars where I normally get 3 bars with my HTC Touch. Any ideas?
I am using the Diamond on ATT's network in the Puget Sound area of Washington. Obviously, there is no 3G. I am not seeing the number of bars I saw on my most recent 3G phone, but the phone works fine for voice calls. One thing I've noticed is with 3G I could continue conversations even in elevators. That doesn't happen on the Diamond.
Did you have to flash a custom ROM or different radio? Or did it work right out of the box?

[Q] Force G/2G on SGS

I currently have an issue in forcing the G/2G network onto my SGS. The issue is that in my house, the 3G signal is ridiculously weak (but the 2G signal is workable) so I want disable the 3G when I am at home
The problem is, that even when using the #*#*INFO#*#*, when you change it to GSM, the change doesn't actually apply and it forces back to GSM/WDCMA (preferred).
The signal for example works fine when the SIM is put into my really old nokia, and calls and connects perfectly every single time
I am on the Virgin network (through Optus) in Australia btw

WCDMA signal horrible

I've flashed my phone countless of times now over the past months and one thing I was hoping for would be better signal strenght for WCDMA mode... I live in Switzerland and my provider is sunrise. Whenever I'm using WCDMA mode the signal is just horrible. Mostly 1 bar or sometimes dropping to zero. 3g and H works most of the time, but the signal is bothering me.. I've tried different modems etc.. but nothing seems to change.. Does anyone else have this problem?? what can I do about it? GSM has full bars most of the time and that's why it's so weird.
also worthy to note is that people hear an echo sometimes when they're talking to me both in GSM and WCDMA mode.
it would be great if someone knows how to solve this problem...
have you been on your providers website to check the coverage in your area ? they could be a fault on their part affecting your signal strength
Im on Vodafone UK and i have terrible 3g signal, I can only use 2g/GSM otherwise my phone doesnt recieve 1 bar of signal - bit of a bummer when you have a smart phone and unlimited internet
Finally, How was your signal before you flashed ? when the phone popped out of the box ? was it still poor then ?

[Q] 3g problems nexus one

hello every body
i have this problem with my nexus one when i am connected to 3g service (umts,hsdpa,Etc'). i can't make calls or receive any calls, i can't use the internet (data) or get sms and Etc'. but i have full bars reception. when i check the vi in setting to "use only 2g" the phone work great.
i tried everything downgrade/upgrade roms,radios. i tried to go back to my first backup and even do PASSIMG but nothing help i googled it every where but nothing
please some one can help???
without 3g the smartphone is useless
thanks,
shushkis
What network you on? I would at least see how old the sim card is.
Lots of time if you have an older sim card it just can't handle a newer system.
I am connected through Orange IL
and i tried switching sims even with other networks.
and more the phone worked fine at the beginning it just happened i remember i switch to one of CY roms and it happened
Have you tried a full wipe and reinstall the rom?
yes of course i tried customized roms and stock roms but nothing helped
I would check your apn settings...
apn connected to taking or getting calls?
i thought it's just for internet connection
Its just a guess.
If its a problem on multiple ROMs, its likely to be either hardware or settings. Settings are cheaper and easier to test, and that's the only setting I can think of...?
Of course, doing a full wipe (including system), installing a new ROM, and testing before you restore any apps and settings may be another way to test, but since the apn settings are pre-baked into most ROMs, it wouldn't rule our the apn...?
OK I tried to put apn settings and it didnt help
you say hardware?
but when I check in settings "use only 2g" the transceiver works great .
maybe the nexus have two transceiver one for 2g and one for 3g?
seems un-logical
No there are two radios one for 3g and one for 2g because 2g is for calls and 3g for data but when 3G is unavailable the phone will use the 2g for the data.
The Same Trouble
shushkis,
I have the same trouble, my 3G connection works so bad, but if I use only 2g connection, all works good... I have no idea what happend with my N1. I have a N1 for 3G 850 (AT&T) model.
Thanks for advantage.
So maybe the problem is the hardware? if the N1 have two inidvidul transcivers?
I have also the same problem. I've tried many different roms and radios. I use 900/2100 3G. What's strang is that 3G works perfectly at home, but when moving to another tower I get emergency calls only warning. 2g works fine.
I just started having 3G issues at home. With 3G on the phone reboots like once an hour, but on 2G I've gone days without a reboot. My 3G signal is not the best at home, but I don't know why that would make the phone reboot. I'm on T-Mo USA.
bobbyphoenix said:
I just started having 3G issues at home. With 3G on the phone reboots like once an hour, but on 2G I've gone days without a reboot. My 3G signal is not the best at home, but I don't know why that would make the phone reboot. I'm on T-Mo USA.
Click to expand...
Click to collapse
Go get a new SIM card...
danger-rat said:
Go get a new SIM card...
Click to expand...
Click to collapse
The one I'm using is only a couple months old, and it works well in my Desire HD, and my Moto Defy. It's only the N1, but I guess maybe it could be that. I'll look into more.
If it's only a few months old, then it may nor be the SIM that is the problem. I suggested it because a number of T-Mo users were having similar problems after a recent network upgrade, and a new SIM seems to fix the issue for most...

[Q] Poor signal (one bar)

hello, I have a new t mobile htc one I got as gift (never opened). My old phone was an unlocked samsung galaxy nexus using a tmobile prepaid sim. I resized this sim to fit the htc one and everything worked fine( full bars for signal). Problem with this sim is that I could not make wifi calls. So I called tmobile and had them activate the new sim which I got with the htc one (Same prepaid plan, no data). i can now make wifi calls. Problem is once wifi is disconnected I only have 1 bar. If I attempt to make a call all bars raise in full, even if i attempt to check my balance the bars automatically jump from 1 to full and back to 1 bar after i see my balance. Is there a setting i need to change or is this normal? i am worried I may be missing calls like this. (All this happens when the wifi is disabled)
Sorry if the post is confusing, I tried to provide all the details but will be happy to provide anything else if necessary.
Thanks!
stephenjones007 said:
hello, I have a new t mobile htc one I got as gift (never opened). My old phone was an unlocked samsung galaxy nexus using a tmobile prepaid sim. I resized this sim to fit the htc one and everything worked fine( full bars for signal). Problem with this sim is that I could not make wifi calls. So I called tmobile and had them activate the new sim which I got with the htc one (Same prepaid plan, no data). i can now make wifi calls. Problem is once wifi is disconnected I only have 1 bar. If I attempt to make a call all bars raise in full, even if i attempt to check my balance the bars automatically jump from 1 to full and back to 1 bar after i see my balance. Is there a setting i need to change or is this normal? i am worried I may be missing calls like this. (All this happens when the wifi is disabled)
Sorry if the post is confusing, I tried to provide all the details but will be happy to provide anything else if necessary.
Thanks!
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Click to collapse
This happens with me sometimes as well...if it is in LTE mode, the signal bars are less...1 , sometime 2, and sometimes 4... as soon as i make call, the data connection is OFF for that moment, and the signal bars are full....as soon as the calls end, the data connection is activated.... the bars are less again.... try changing the data connection modes from LTE to 3G only and to 2G....and see what happens
mathrania said:
This happens with me sometimes as well...if it is in LTE mode, the signal bars are less...1 , sometime 2, and sometimes 4... as soon as i make call, the data connection is OFF for that moment, and the signal bars are full....as soon as the calls end, the data connection is activated.... the bars are less again.... try changing the data connection modes from LTE to 3G only and to 2G....and see what happens
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Click to collapse
Awesome this helps. Thanks. In my situation I have no data plan setup. No need for any internet on my phone atm. So all I use this phone for is calls and an occasional sms. Will I have a longer battery life if i disable lte and have it on gsm only? Would the call signal drop?
stephenjones007 said:
Awesome this helps. Thanks. In my situation I have no data plan setup. No need for any internet on my phone atm. So all I use this phone for is calls and an occasional sms. Will I have a longer battery life if i disable lte and have it on gsm only? Would the call signal drop?
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Click to collapse
i am not sure, but when you dont use Mobile Data on your HTC one, there is no need to select the LTE mode.... you can select the other option always. and it might save battery as well....."might"
You will definitely save on battery if you switch to 2g if you don't use data at all. Switching to 3g frequency takes more battery even when there's no data connection.
I switched it to gsm only then disabled mobile data. Full bars now. This should work. The next option is wcdma which i dont think tmobile uses.

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