Database Users

[Q] No signal on WDCDMA mode. Data and Calling only works on GSM mode.

Hello. I recently purchased a S4 I9505. After installing my sim card i noticed periods of no signall and "emergency calls only" phases. I had to restart phone to get it to work, but only for a short while before i got the no signal issues again.
I had my micro-sim cut from my previous one so thinking a bad cut could be the problem i got a new out of the packet micro-sim from my service provider. Which didn't really solve anything.
The S4 version officially selling in my country is the I9500 one, but i know a number of people using the I9505 version here with no issues.
After messing around with the settings i found i get perfect network on GSM only mode. I can use data by means of GPRS and EDGE but its just really slow. As soon as i turn the network mode to GSM/WCDMA or WCDMA mode only i get the no signal problem.
I factory reset-ted from the phone menu as well as the boot menu and that too didn't solve anything
Has anyone encountered the same problem?, Anyone know how to fix it?.
Really bummed out considering how much i had to go through to buy the phone.
Any help would be much appreciated.
Thanks.

Maybe the i9505 doesn't support the right bands for your area??

Hi
I have same problem here http://forum.xda-developers.com/showthread.php?t=2421947 but no fix found

thatsupnow said:
Maybe the i9505 doesn't support the right bands for your area??
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Click to collapse
Nah, like i said i've tried using other S4 I9505 in the same area and other phones that support 3G. They work perfectly . Im beginning to think its a hardware fault rather than a software one
tnp0511 said:
Hi
I have same problem here http://forum.xda-developers.com/showthread.php?t=2421947 but no fix found
Click to expand...
Click to collapse
Lets hope this thread draws some one who knows how to. Good luck to you.

Bump

Note 4 3G/4G not working.

Hello everyone,
My T-Mobile Note 4 is not recognizing my sim at all. Hell it isn't even listing any mobile networks when I try to scan for them.
Okay so it is now recognizing the SIM however the 3G/4G are not working. Only edge is working. Any ideas on how to fix that?
I did install a few custom roms in between to test them (MaximumOverDrive, NOBLE ROM) as well as kernals (freeza, Xceed) however I have reinstalled EPE3 stock via Odin now but still mobile data is not working.
Can anyone please tell me what to try/do to fix it?
If you need any more info feel free to ask.
Love,
Becky

Sounds like the SIM reader on your device may have stopped working. I'd take it to a official Samsung Service Center and let them take a look at it.

DarkGuyver said:
Sounds like the SIM reader on your device may have stopped working. I'd take it to a official Samsung Service Center and let them take a look at it.
Click to expand...
Click to collapse
Thanks for the reply bud ^_^
But now sim is getting recognized and 2G and EDGE are working on it. However 3G/4G are not working. I am on stock PE3 any clues on how to get it fixed?
I'll forever be grateful.
Love,
Becky

Becky911 said:
Thanks for the reply bud ^_^
But now sim is getting recognized and 2G and EDGE are working on it. However 3G/4G are not working. I am on stock PE3 any clues on how to get it fixed?
I'll forever be grateful.
Love,
Becky
Click to expand...
Click to collapse
Make sure apn settings are correct if not then make new apn in settings/mobile networks/apn and ad new apn for tmobile manually and save and select apn that you made manually.hope this help.

Becky911 said:
Thanks for the reply bud ^_^
But now sim is getting recognized and 2G and EDGE are working on it. However 3G/4G are not working. I am on stock PE3 any clues on how to get it fixed?
I'll forever be grateful.
Love,
Becky
Click to expand...
Click to collapse
Just take it into your cell providers local high street store. They should be able to restore the APN settings back onto your device, so that you will be able to get 3G and 4G/LTE connectivity.

Questions on using Samsung unlocked S8 on Verizon

I have read a bunch of threads all over and done some searches but cannot seem to find any clear definitive answers on a few things. I am looking at grabbing the Samsung unlocked S8 and want to know for sure if anyone can confirm what does and does not work on VZ with that model? I am pretty sure of the following, but anyone who has one on VZ and can help me out would be greatly appreciated.
- WiFi Calling does NOT work on VZ with the unlocked version. I am pretty sure based on what I read on this.
- VoLTE and HD calling DO work on VZ. Again, pretty sure from what I read but it is hard to find definitive answers anywhere.
- Any app based WiFi calling would still work (so using stuff like Signal or any app that uses data to make calls could make WiFi calls even if the VZ network WiFi calling does not work?)
- Video calling DOES/DOES not work? Cannot find any answer to this.
- Voicemail still gives you notifications/works like normal? I think I read someone say that Visual Voicemail does not work, so the app that lets you just tap and see and instantly listen to VM would not work and you would have to dial *86? Not sure here and clarification is appreciated.
- Any other significant issues or things that don't work or are affected that I have missed?
I think it is pretty bad that phones can evolve with tech and you can get a phone several years and models newer than an older phone, but because one is carrier locked version, it has a ton of features that the newer phone can do, but won't because of carrier BS. Again, all help is appreciated. Thanks!

Visual voicemail does not work. HD calling works. I dont do wifi calling. I dont do video calling. I have unlimited data and mobile hotspot works flawless.

antonius66 said:
I have read a bunch of threads all over and done some searches but cannot seem to find any clear definitive answers on a few things. I am looking at grabbing the Samsung unlocked S8 and want to know for sure if anyone can confirm what does and does not work on VZ with that model? I am pretty sure of the following, but anyone who has one on VZ and can help me out would be greatly appreciated.
- WiFi Calling does NOT work on VZ with the unlocked version. I am pretty sure based on what I read on this.
- VoLTE and HD calling DO work on VZ. Again, pretty sure from what I read but it is hard to find definitive answers anywhere.
- Any app based WiFi calling would still work (so using stuff like Signal or any app that uses data to make calls could make WiFi calls even if the VZ network WiFi calling does not work?)
- Video calling DOES/DOES not work? Cannot find any answer to this.
- Voicemail still gives you notifications/works like normal? I think I read someone say that Visual Voicemail does not work, so the app that lets you just tap and see and instantly listen to VM would not work and you would have to dial *86? Not sure here and clarification is appreciated.
- Any other significant issues or things that don't work or are affected that I have missed?
I think it is pretty bad that phones can evolve with tech and you can get a phone several years and models newer than an older phone, but because one is carrier locked version, it has a ton of features that the newer phone can do, but won't because of carrier BS. Again, all help is appreciated. Thanks!
Click to expand...
Click to collapse
Did you decide to purchase the unlocked S8 for use on Verizon? Has it been a good experience? I'm thinking of buying one since I have the grandfathered unlimited data plan and I'd like to be able to use the mobile hotspot without having to root. Although I don't travel too much, having the option to use my phone in another country by popping in a local SIM is definitely an attractive feature. Thanks in advance!

LG G6 Mobile data issue

Hello All.
This may sound like an easy problem to solve and a part of me hopes it is. but im fairly well versed in android and has me baffled.
Phone runs beautifully 870DS. When i leave WiFi, the swith to mobile data takes for ever and then remains super fickle and intermittent. I sometimes do not have any data moving whatsoever (offline dinosaur in chrome level) When i connect to wifi again, all is fine, instantly.
I have full signal (full bars).
Mobile data on.
Switch to mobile data on.
The correct network registered & the correct APN for that network is set.
I have it set to GSM/WCDMA/ LTE auto
I have tried setting RAT set to every possible combo and it still continues!
I read somewhere it could be caused by radio initiation, so i went in *#*#4636#*#* to run a ping test but "phone information" throws up an error "This application does not work on this device"
Im 95% certain it is unlocked because i I bought the phone in another country and just popped my new sim straight in without hassle.
The mobile data issues started almost immediately. Now im stumped as what to do.
Any suggestions would be greatly appreciated and rewarded with beer :good:
THANKS!!!

In Developer Options, try switching on the "Agressive WiFi to Cellular Handover" option.

LPMatt said:
In Developer Options, try switching on the "Agressive WiFi to Cellular Handover" option.
Click to expand...
Click to collapse
Thanks. I will try that and trial run it over the next few days. The issue also occurs randomly while out on LTE or 3G. I will take my phone out to check google or whatsapp and nothing will send. So as your suggestion may be a work around, i doubt it will be a solve.
Will let you know how it goes

deathcells said:
Thanks. I will try that and trial run it over the next few days. The issue also occurs randomly while out on LTE or 3G. I will take my phone out to check google or whatsapp and nothing will send. So as your suggestion may be a work around, i doubt it will be a solve.
Will let you know how it goes
Click to expand...
Click to collapse
No change or improvement to the connection

Bump for anymore help from anyone. Please??
Getting desperate here....

deathcells said:
Bump for anymore help from anyone. Please??
Getting desperate here....
Click to expand...
Click to collapse
Does the phone have the right bands for 4G in your country?

Thanks for the reply!
Not sure, how do i check that?

aioan said:
Does the phone have the right bands for 4G in your country?
Click to expand...
Click to collapse
Thanks for the reply!
Not sure, how do i check that?

deathcells said:
Thanks for the reply!
Not sure, how do i check that?
Click to expand...
Click to collapse
go to settings, system, about phone, hardware info and check the model number.
For example I have LG-H870 (European bands, single SIM model).
I see you have dual sim so probably model H870DS and this should have enough bands to work well in Europe and Asia. Check here:
https://www.teamandroid.com/2017/04/15/lg-g6-model-numbers-variants/

aioan said:
go to settings, system, about phone, hardware info and check the model number.
For example I have LG-H870 (European bands, single SIM model).
I see you have dual sim so probably model H870DS and this should have enough bands to work well in Europe and Asia. Check here:
https://www.teamandroid.com/2017/04/15/lg-g6-model-numbers-variants/
Click to expand...
Click to collapse
Thanks for that. Yes according to this https://www.frequencycheck.com/carr...0ds-g6-dual-sim-td-lte/mtn-group-south-africa
I do have the correct bands. Could a carrier lock only one of the slots rendering it single sim in effect? The one sim works perfectly, second sim, no dice

Sorry for bumping an old thread.
Gf is having a similar issue on her phone; long story short, it happens that sometimes, after being connected to Wi-Fi and turing it off, it takes ages for her to get a mobile data connection, despite having full signal.
I had her replace the SIM, as I've seen similar problems (intermittent data connection, phone appears connected but no Internet available, etc.) with a SIM card that was about to go bad; it didn't help. Next step would be a full phone reset.
@deathcells : did you find the cause of your issue?

@fagentu.xda
No unfortunately not. I just deal with it. Extremely frustrating standing in the shop trying to pay without internet...
I tried the settings and force options to no avail.
I tried using both sim cards (from different providers) in both slots for months and no combination ever worked for me. I have yet to figure out if i bought a dudd phone or if a work around exists. Please let me know what you find out! Thanks and best of luck

Have the same issue with mine now. It started to go bad a few weeks ago... Tried everything. Changed SIM card, factory reset, etc... and nothing will change.
I'd say that the phone is just faulty. As I'm still under the warranty I'm in contact with LG to find out about a possible fix or phone replacement. I'll try to keep you posted.

Have you guys find a solution for this? I cant do anything. Does flashing kdz to andriod 9 pie helps?

TMO OP6T dual sim swapping sim data.

I've been reading around and I know there is a small, but growing, group of users that are finally getting to utilize their dual sim function on their TMO variants. I've finally managed to get everything working on mine, but noticed one thing that does not seem to work. Correct me if I'm wrong, but when I toggle the 'switch data card' in the notifications pull down from sim 1 (TMO) to sim 2 (VZW) I suddenly have no network connection.
Has anybody else experienced this?
Is there another step I'm missing or is this supposed to happen?
I'm currently running the most recent 9.0.6 update.

chillaxnphilx said:
I've been reading around and I know there is a small, but growing, group of users that are finally getting to utilize their dual sim function on their TMO variants. I've finally managed to get everything working on mine, but noticed one thing that does not seem to work. Correct me if I'm wrong, but when I toggle the 'switch data card' in the notifications pull down from sim 1 (TMO) to sim 2 (VZW) I suddenly have no network connection.
Has anybody else experienced this?
Is there another step I'm missing or is this supposed to happen?
I'm currently running the most recent 9.0.6 update.
Click to expand...
Click to collapse
Might be ur carrier but mine switches there is a moment where it does take a second to switch the data but it’s pretty seemless
Sent from my iPad using Tapatalk

@djkinetic Thanks for your response. I checked my VZW settings and found that there was nothing listed under its APN. As soon I reset it to default APN, everything was working fine.
@MODERATORS: this question can be closed. Thank you.

Sorry. Wrong thread.