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..

Can't make or recieve calls though 4g works fine.

Hey, my name is Chris, i'm from Greece and I recently got a Huawei p8 lite ale l21 and i can't make or receive any calls. When I trying call someone i get a "mobile network not available". In dual sim setting i can see my sim working in slot 1 and i have full signal and 4G perfectly working all the time. Also slot 2 is totally useless as when i tried to place my sim there i did not have even signal.
I have searched around the web a little bit but i have not find something really helpful. Any ideas?
It will be helpful to change my ROM to a custom?My current version is C432B170. That was the first thing that i thought but i m not very familiar with that kind of stuff
Edit: I ve install marshmallow 6.0. Nothing changed... Still have 4g, full signal etc but i can't make or receive calls.

Anyone?
Sent from my ALE-L21 using XDA Free mobile app

I was experiencing with similar problems, although the calls were coming through just fine, but after dialing any number, or trying to call from Contacts, the Dialer force closed immediately.
I disabled all installed xposed extension, and my problem was fixed all the sudden after the reboot, and calling works fine since then.
Your problem seems different from mine, maybe you should try swapping the two cards, or try to get them replaced at your carrier.
Also, the ROM has to be dual-sim in order to get the second slot working, and the second slot will work only with 2G and calling.

same problem here...any luck ? :\
http://forum.xda-developers.com/p8lite/help/huawei-p8lite-doesnt-make-receive-calls-t3400468/
CiNi

Hi there
I had the same problem as daviddosa. Except, even I have disabled then uninstalled all exposed module, the symptom still appearing randomly. Now after several reboots and factory reset I could not start calling. Maybe I going to reinstall a stock ROM.
KR

Radio issue NO 3G?

Hey guys,
I've been fighting with this all day and its time to ask for opinions.
I recently received my phone back from the repair center to fix some serious cosmetic damage. Before sending it there I verified that everything was working properly.
The problem I am having now is that when I turn on the phone, it connects to LTE. I can SMS and use data briefly.
If I try to make a phone call or after a certain amount of time the mobile network will drop to either "no service" or "emergency calls only".
I have tried factory reset, clearing cache, original factory radio/bootloader, new factory radio/bootloader, N preview. No change.
Any help would be greatly appreciated.
GG

goldengraham said:
Hey guys,
I've been fighting with this all day and its time to ask for opinions.
I recently received my phone back from the repair center to fix some serious cosmetic damage. Before sending it there I verified that everything was working properly.
The problem I am having now is that when I turn on the phone, it connects to LTE. I can SMS and use data briefly.
If I try to make a phone call or after a certain amount of time the mobile network will drop to either "no service" or "emergency calls only".
I have tried factory reset, clearing cache, original factory radio/bootloader, new factory radio/bootloader, N preview. No change.
Any help would be greatly appreciated.
GG
Click to expand...
Click to collapse
Try this settings , other networks, mobile networks, network type change that to 3g then back to lte see if that helps

If I put it on 3G it only shows "no service" or "emergency calls only". I tested my SIM in another phone and it works fine.

Have you changed any settings in the secret dialer menu? I had this same issue and that's where my problem originated. Installing Chroma rom fixed it for me. I was able to switch Roms afterwards without issues.

*#*#4636#*#*? I have that set to the same as my other phone.

murphyjasonc said:
Have you changed any settings in the secret dialer menu? I had this same issue and that's where my problem originated. Installing Chroma rom fixed it for me. I was able to switch Roms afterwards without issues.
Click to expand...
Click to collapse
I haven't installed any non stock ROMs. I'm going to install chroma and see if it helps. Otherwise I wonder if they damaged the antenna during repair.

So I tried...
Flashing stock radio
Flashing original factory ROM
Flashing Chroma
Restoring. No success...
To make the problem even more interesting.... I inserted a different SIM (Rogers) I'm on Bell and it worked briefly. Got a new SIM from Bell, no good...
Any other ideas?
Graham

Phone taking forever to send txts

Is anyone else having issues with their phone sending txt messages. Mainly on AT&T. I send a txt and sometimes (probably about 40% of the time) it takes 30sec-3min to send a txt.
I thought it was my rom (PN6) since I dirty flashed from the first PN6 to the last. So I just recently clean flashed PN7 to see if that solved the problem but im still having the issue.
Anyone else having this issue? And/or do you recommend anything?

Anyone?
Ive tried clearing the app data.
Ive tried clearing the device cache via the storage setting in settings
Ive tried clearing the cache in TWRP
Ive tried toggling the permissions for messenger
Ive tried Hangouts to see if it was app specific.
I got a new SIM card from AT&T
The only thing i havent tried is putting my SIM card in a different phone (because i dont have a spare phone) to see if its phone related or server related.

I'd advise to flash to stock factory images and see if it still happens. If not, it's an issue with Pure Nexus and you can try to get support in the official thread. If it still happens, I'd probably talk to AT&T tech support. They might be working on some towers or something. I don't personally have the issue on Project Fi, but I also don't use Pure Nexus.

Texts are normally sent over 1x I believe. I remember reading that AT&T is shutting down their 2g network by the end of the year. They might have shut it down already in your area. Maybe the texts are timing out and then being routed over 3g/4g?
Type *#*#4636#*#* into the dialer>phone information>turn on sms over ims>reboot. Worth a try

hawkswind1 said:
Texts are normally sent over 1x I believe. I remember reading that AT&T is shutting down their 2g network by the end of the year. They might have shut it down already in your area. Maybe the texts are timing out and then being routed over 3g/4g?
Type *#*#4636#*#* into the dialer>phone information>turn on sms over ims>reboot. Worth a try
Click to expand...
Click to collapse
I went into that menu but i didnt see a "turn on SMS over IMS"
That menu looks way different then when it did with 6.0.1 when we used to have to toggle LTE and GSM to get LTE to connect.

Update
I noticed that if i send a txt and its stuck on "sending" if i go tin to the *#*#4636*#*# menu and toggle "Cellular Radio Power" off then on the "stuck" txt send right away.

Sim card disappears after 2-4 minutes when making calls with VoLTE enabled

My v20 drops all calls between 2 and 4 minutes in, and usually around the 3 minute mark. The call drops, signal goes to zero, and a moment later I get a toast message saying "Loading SIM card contacts..." and then I can immediately dial back in.
WiFi calling is disabled, though the setting being on or off doesn't seem to make a difference. I've cleaned the SIM card and added tape to the back to ensure good connectivity - no change. I also went to T-Mobile and they replaced my SIM on the spot but it immediately happened again in the store and in front of the clerk when we tried a call. They've suggested a warranty exchange.
One interesting thing I've found though is that disabling VoLTE calling fixes it entirely - it no longer drops calls, but of course there's no HD voice and I can't use band 12 and they're already cutting back on HSPA coverage.
Haven't found anything else useful via Google or XDA. Even with VoLTE enabled there are no data drops, VOIP calling via hangouts works fine. Anyone have any ideas short of a full exchange? Not rooted and while the LG backup app is pretty good, I really don't want to go through the day-long process of restoring everything if I can avoid it.

Hey there! I had the same issue, exchanged the phone for a new one, and STILL have the same isssue! Did you ever find another fix? This is so annoying and I cant believe a bigger deal isn't being made of it.

Something wrong with ur
operator
Sent from my LG-H990 using Tapatalk

Been owning V20 for about 5 weeks now. The first 3 weeks were pleasant until I started seeing dropped calls. Disabling VoLTE did not help. Changing sim card wouldn't help either.

I'm having similar issues H915 Freedom Mobile.
Was roaming on AT&T in the US when I first did the update. And everything was fine till I was home and on Freedom.
When Wi-Fi calling is enabled. It makes no difference if mobile preferred or VoWIFI preferred is selected. It enables either way after reboot or turning Wi-Fi adapter off and on again.
Incomming calls frequently don't come through regardless of whether vo wifi is on or off. Texts same problem. And persists sometimes on cellular and sometimes on VoWifi.
Get SIM errors, signal drop constantly. And have tried everything I can think of to rectify the issues with zero success.
Anyone with Freedom having similar issues? Or any suggestions I might not have thought of that may be the the cause?
- Chris