Database Users

Problem in making calls - works only if GSM 900 band is selected

Hi all
I am having a problem lately in making/receiving calls. The only easy the problem is solved is by using the band GSM 900. If the band selection option is set to determine automatically then I face the problems although the network is full.
The band selection is changed using *#2263#.
Note that the phone was working fine with the default band settings until one day I lost my emi and then had the samsung service centre restore it.
Have been having toys problem since then.
Any solutions?
Sent from my GT-I5801 using XDA App

i have a very similar problem. my issue also started a few days ago. only, i haven't tried using that frequency band that you mentioned. the thread that i started here didn't get too many replies, but i googled stuff and i found out that the issue is with the data connection.
try disabling the data network mode whenever you're not doing it. that has solved the problem with me so far. but, if you do find a way where you can use the data network mode and make calls easily, let me know also please.
thanks.
EDIT : i think you mean IMEI. and i didn't lose it. how did you manage to lose yours? i thought flashing was safe. which version of what ROM are you using now? and which were you using before?

Yes IMEI was what i meant. Did something stupid to loose my IMEI. And yes flashing is quite safe and does not touch your IMEI.
Was using DDJP2 when this issue started. And have flashed many roms but the issue still remains.
And i dont use any data network so my data network mode is also in disconnected mode.
And to further describe my problem.. when i make a call to a nokia phone the call almost gets connected and the nokia phone also gets lighted on with the small lock sign coming up... but the call does not connect completely ....
The only solution i could find (after weeks of digging) is to default the band selection to GSM 900... but i am sure that there should be a better solution for this.

I was using using eclair when my issue started. then i upgraded to froyo DDJP2 and my issue went away :/
but it has started again off late, no matter which ROM i use. I tried doing what you suggested, that is to set the default band to GSM 900. but that only for incoming calls. as in, i can receive all calls properly but my outgoing is still faulty. it just dials and then the "call ended" screen comes with the dial and message buttons. and when the data network mode is activated (it is by default. are you sure yours is switched off?) for me, my calls barely ever go through. there is a significant improvement when it is deactivated.
I'm looking for a better way out too.. I'll let you know if someone helps me out either. Good to know i'm not the only one here who has the issue.

Yes am sure.. the network data mode is always deactivated for me here.
Yes hopefully we can get some better solution here.

I lost my IMEI..samsung repaired my imei...nut im not getting calls or sms....even out going calls also.........plss help mee

i am havin a similar problem , sometimes (a lot ot times) people call me and my phone seems to be closed to them , but it works normally :S , that problem started when i flashed the phone and it remained after i flashed a lot of roms (even after factory reset) , and i cant understand if its a software issue or a device problem..
i would appreciate any help

and now i'm facing the issue even when the 900 band is selected (but data network mode is activated, which i don't want to disable because of whatsapp and ebuddy and gmail and tTorrent)
wondering if any recognized developer could help us out with this problem..

[Q] No service on Galaxy S5

Hi, i really need help on this one. My phone keeps saying no service , but 4G works fine. If i turn on flight mode and disable it again , i got connection for about a minute before going back to no service. I tried a different Sim card, same issue. Both simcards work fine on my S3.
does anyone know a solution? Thx

Impossible to say since you provided no details as to which S5 model you have, which firmware, which carrier, et cetera.
Try to discern a pattern in when the issue happens. Possibly you could try updating your firmware. Or open a carrier support ticket.
.

Samsung galaxy note 3 N9005 - Emergency calls only.

Hi XDA
So i came across a very serious issue 2 days ago basically rendering my phone almost useless as calling is very important to me.
I have been running purify CM13 rom on my samsung note 3 N9005 Snapdragon flawlessly for 2 months and out of the blue yesterday my phone displays Emergency calls only- then my service provider name, i tried the sim in another phone and it worked i also tried other SIM cards form other service providers in my phone and they all show the same thing but the phone can actually identify the network provider also when i remove the sim it says no sim inserted.
Hours upon hours of googling and troubleshooting and still no luck in fixing this issue whatsoever. I tried a lot of stuff like resting the APNs, manually setting the network, Switching form 3g to 2g and even wiping my device and flashing the newest version of the rom again but the problem still presists.
At this point i have no idea what to do, any help is appreciated.

FairTraxx said:
Hi XDA
So i came across a very serious issue 2 days ago basically rendering my phone almost useless as calling is very important to me.
I have been running purify CM13 rom on my samsung note 3 N9005 Snapdragon flawlessly for 2 months and out of the blue yesterday my phone displays Emergency calls only- then my service provider name, i tried the sim in another phone and it worked i also tried other SIM cards form other service providers in my phone and they all show the same thing but the phone can actually identify the network provider also when i remove the sim it says no sim inserted.
Hours upon hours of googling and troubleshooting and still no luck in fixing this issue whatsoever. I tried a lot of stuff like resting the APNs, manually setting the network, Switching form 3g to 2g and even wiping my device and flashing the newest version of the rom again but the problem still presists.
At this point i have no idea what to do, any help is appreciated.
Click to expand...
Click to collapse
Ever found a solution?

Urgent : Unlocked at&t s7 No Signal at all; sim slot/antennae fine

Hi guys,
Been into android modification since 7 years but gave up since my last 2 phones. So i got this unlocked at&t galaxy s7 in uae and it worked like charm, the network and coverage. I then started usingthe phone in pakistan too and it worked well even here. So one day i connected to gear vr so that i can initiate the oculus data installation as first time setup but the gear vr kept on disconnecting automatically. I have used it before too but never had problem. Then i rebooted the phone and i find that i have no signals at all even though my sim contacts are being displayed and there is no “no sim” message on statusbar even. But dont have any signals at all. I then inserted my sim to iphone and it was working perfect. Then i inserted different carriers sims to s7 but yet they werent working even. I then cleared the cache, factory reset, cleaned the sim slot and the sim , but no success. I left ky ohone turned off for days andeven drained battery 100% many times to calibrate and perform hardware reset but no success. I then sent the phone back to uae for repairing from my friend as i thought that the antennae were the one’s responsible but before he even thought of disassembling the ohone, he inserted uae sim and it worked perfectly. Call and data were working perfectly. Any idea what is the problem? Kindly let me know pleaseeee. Is there any problem with frequency? Like gsm or cdma? But the phone worked before. I tried to enter the settings of manually selecting networks but there was error popup “No service and signal”. Signal strength 0asu -113dvm

Loki_GOM said:
Hi guys,
Been into android modification since 7 years but gave up since my last 2 phones. So i got this unlocked at&t galaxy s7 in uae and it worked like charm, the network and coverage. I then started usingthe phone in pakistan too and it worked well even here. So one day i connected to gear vr so that i can initiate the oculus data installation as first time setup but the gear vr kept on disconnecting automatically. I have used it before too but never had problem. Then i rebooted the phone and i find that i have no signals at all even though my sim contacts are being displayed and there is no “no sim” message on statusbar even. But dont have any signals at all. I then inserted my sim to iphone and it was working perfect. Then i inserted different carriers sims to s7 but yet they werent working even. I then cleared the cache, factory reset, cleaned the sim slot and the sim , but no success. I left ky ohone turned off for days andeven drained battery 100% many times to calibrate and perform hardware reset but no success. I then sent the phone back to uae for repairing from my friend as i thought that the antennae were the one’s responsible but before he even thought of disassembling the ohone, he inserted uae sim and it worked perfectly. Call and data were working perfectly. Any idea what is the problem? Kindly let me know pleaseeee. Is there any problem with frequency? Like gsm or cdma? But the phone worked before. I tried to enter the settings of manually selecting networks but there was error popup “No service and signal”. Signal strength 0asu -113dvm
Click to expand...
Click to collapse
Forgot to tell, my phone has never been rooted, i even tried to enable/disable “Enable hd LTE features” but no luck. Its on 7.0. Dont recieve OTA. Not blacklisted either. Pakistan doesnt have CDMA. I have even noticed it recieving weak signals compared to my iphone when the phone was working ok. And my radio is showing to be off and when i turn it on from the dial code menu. It doesnt keep turned on and it turns off automatically. I still have the imei amd baseband version. Dunno what the issue is.

Kindly reply guys
Please help

Loki_GOM said:
Please help
Click to expand...
Click to collapse
Settings>connections>mobile networks> apn settings or access point names
Manually enter your carriers information you'll have to ask them or look it up online sure its easy to find they might even help you in store
Its not good for you to buy these US phones outside of the US because changing CSC to INS/INU/PAK could prove to be difficult being it was never supported by snapdragon G930A model but only exynos G930F although it's not impossible
/system/csc/others.xml is where your answers are waiting for you unless you update to oreo then it'll be in /system/omc/cscfeature.xml and cscfeature_network.xml
You will need a root file manger to be able to see what I'm talking about then you will have to figure out what those "strings" mean
Unless you want to mod and figure out make your phone awesome just flash other US firmware that uses gsm network only i think ATT only uses gsm and you can root to debloat ect.
Here's a method for rooting
https://forum.xda-developers.com/verizon-s7-edge/how-to/root-s7-s7edge-oreo-nougat-t3819616/amp/
I'm sure there's people in your surrounding area that are into androids and rooting that understand and can help you figure things out if you know any one woth a G930F/G935F INS/INU/PAK thatd be awesome. If your imei number is truly gone from your phone its should still be on the back of the phone
I know this isn't the best help but you aren't the first post I've seen of Pakistanian with US S7 tryjng to figure it out.. idk if he ever did but if you learn you can help others as well
*note: when I say change csc I don't mean flashing firmware in odin, that is impossible. I mean porting it yourself with root like in the link below this one
*another note: I am not saying use the link below as anything other than an example because again that link was developed for Eynos phones and not your snapdragon so it probably wouldn't work but just so you have an idea of csc
forum.xda-developers.com/s7-edge/development/utility-flashable-csc-selection-30-t3392957/amp/

My Galaxy S4 GT-i9500 doesn't receive a signal, not even emergency calls. I need help

Hello everyone, I have got a problem with my Galaxy S4, its model is GT-I9500. The thing is my phone have no signal, but I need to say in some cases it receives signal and the red connect but it is unstable (it connects to 3G mobile data and I can make calls) but it's last is very short but the mayor part of the time have no signal, it is keeping in "No Service" and "Emergency Calls Only". I need to say that I had installed in my phone the rom First Flight V6 and it was fine for a long time but one day I activated Airplane Mode and since that day I have this problem, I was searching in google about this and I didn't find anything that could help me, so I decided to go back to the stock rom but the problem continues and I have no idea what to do. I would apreciate your help

You tried different stock ROMs?

ricardo_beatles said:
I would apreciate your help
Click to expand...
Click to collapse
Flash stork rom.