hello,
I am from India and using Vodafone network. I am facing a very weird problem with my OPO. I am able to receive and use LTE ie I can use internet and send and receive messages.
But the problem starts when I try to make a call. As i dial a no. the phone switches to 3g and I receive a error saying NO NETWORK CONNECTION in about 5-7 seconds. To confirm this problem, I tried to switch to 3g only and 2g only in the network settings. Whenever I select 2g or 3g, my connection is lost and I cant even register to a network
I have tried many other sims including reliance, idea and another vodafone sim with the same result. I have flashed the stock COS file using fastboot to make my phone completely stock including clearing data, internal storage and system. I have tried a lot of roms which never used to give me such a error but the problem persists in all the roms
Please guys help me out
Thank you in advance
chetan_p said:
hello,
I am from India and using Vodafone network. I am facing a very weird problem with my OPO. I am able to receive and use LTE ie I can use internet and send and receive messages.
But the problem starts when I try to make a call. As i dial a no. the phone switches to 3g and I receive a error saying NO NETWORK CONNECTION in about 5-7 seconds. To confirm this problem, I tried to switch to 3g only and 2g only in the network settings. Whenever I select 2g or 3g, my connection is lost and I cant even register to a network
I have tried many other sims including reliance, idea and another vodafone sim with the same result. I have flashed the stock COS file using fastboot to make my phone completely stock including clearing data, internal storage and system. I have tried a lot of roms which never used to give me such a error but the problem persists in all the roms
Please guys help me out
Thank you in advance
Click to expand...
Click to collapse
http://forum.xda-developers.com/showpost.php?p=56577252&postcount=455
I managed to solve the same problem not a long time ago. At the end of this post there are several values you can write in nvram. Try experimenting with the ones.
If it did the trick just don't forget to make a backup of EFS partition
same problem, let me know if you resolve
I think you might need to unlock all bands. Check this out: http://forum.xda-developers.com/oneplus-one/general/guide-unlock-aditional-bands-qualcomm-t2877031
Notes:*Those modifications need to be redone after radio*flashes.*
I will certainly try that..
But is it possible that the bands I need were unlocked earlier and now they are not, beacause 10 days earlier my 2g and 3g networking on this phone were working perfectly...
On that day I messed up a lot of settings in *#*#4646*#*# menu, could this be the possible reason that some of the bands are now locked???And I also want to tell you that all the options like WCDMA only GSM only etc which were earlier available in the menu are still available
Thanks your replies
Related
Hi all,
i noticed that my phone (drops/do not) receive calls if i was connected to the internet through the data plan, but it works just fine if i was connected through WiFi, any ideas?
PS: i changed many radios but still the same.
When the calls fail, is the phone is on 2G mode or 3G mode?
i was having a bad reception on 3G so i switched to GSM Only option.
blackrose157 said:
i was having a bad reception on 3G so i switched to GSM Only option.
Click to expand...
Click to collapse
That could be the problem - as 2G does not allow data and voice/text at the same time, could be that because data is active, calls are being dropped. Try disabling data for a while and see if the problem goes away.
yes that is correct, when the send & receive bars of the data is blinking i cant receive calls, otherwise i can receive calls with no problems.
i will try to switch back to 3G and test how it's gonna work.
thanks for your help.
No problem. I had this problem a lot before on my HTC Legend using the stock ROM. While on 2G mode, people would tell me my phone would keep going to voicemail even though I had full reception, and sometimes I would receive texts really late. It was very annoying as I never had the problem previously on Nokia phoens.
However, since switching to CyanogenMod on the Legend, and also on the Desire S, I haven't noticed the problem as much.
Have the same problem on same carrier,
Sometimes, an SMS notifies me that someone has tried to contact me with no success !!
I thought this was carrier related, but never thought this is 3G/2G radio problem on stock ROM!!
Will give the "GSM Only" option a try and will report back.
Thank you all !!!
All of the sudden I can't make or receive calls on my huawei m7, if I make a call it tries to dial for 10 seconds and then terminates. I get no dial tone, people calling me gets nowhere. Text messages work fine, 4G/WiFi works. I have noticed that if I turn 4G off I get no signal, so I have no 2G or 3G, I've tried factory resetting which did nothing. I've also upgraded to 5.1 and downgraded to 4.4.2, no difference. Also tries clearing the data on the Google apps as some people have suggested.
Anyone got some ideas what could help me with this problem? Would be much appreciated!
Thanks in advance
hey pal just change your network mode to 2g 3g( i mean deselect 4g lte wcdma auto connect from preferred network mode. because 4g lte is meant for data use only. I f your carrier and phone doesnt support volte. u cannot make calls over lte networks.) after selecting 3g 2g auto connect just restart ur phone and then check. I have same problem with my mate7. I fixed it with the help of google. Thanks google.
Hello,
Did you find a fix for this issue? I'm having similar issue with my Mate 9.
Any advise/suggestion would be appreciated.
pyth3r said:
All of the sudden I can't make or receive calls on my huawei m7, if I make a call it tries to dial for 10 seconds and then terminates. I get no dial tone, people calling me gets nowhere. Text messages work fine, 4G/WiFi works. I have noticed that if I turn 4G off I get no signal, so I have no 2G or 3G, I've tried factory resetting which did nothing. I've also upgraded to 5.1 and downgraded to 4.4.2, no difference. Also tries clearing the data on the Google apps as some people have suggested.
Anyone got some ideas what could help me with this problem? Would be much appreciated!
Thanks in advance
Click to expand...
Click to collapse
it'll not work 100% but you can try
first update your firmware to latest b571 or b560 depending on what region you have then unlock your bootloader flash twrp recovery try to install custom rom because update different regions firmware cause these problems I mean baseband version hope it'll help you..
I really need help with my device, I searched all over XDA and no-one seems to have the same issue as me.
Here is some information:
1) Nexus 6P (H1511)
2) 6.0.1 Absolute stock, no rom, no root, no custom recovery. Build number MMB29P.
Recently got a new Nexus 6P and imported to Russia. All of the major bands here are supported. And the phone worked excellent for a few weeks, but then it lost all 3G or GSM connectivity. Just randomly,didn't do anything with it, the only thing I did is move to another city but than I got back, the issue didn't resolve. LTE works perfectly but can't call or receive calls, can receive sms though. Reseting network settings and factory reset changed nothing. Tried manualy set network to WCDMA or GSM with *#*#4636#*#* command, the moment I switch to anything besides LTE the connection is lost. Contacted the provider, no problem on their side, my SIM works good in other phones, my phone with other SIMs - no.
I don't think it is a hardware issue because a few times I managed to get everything working after an hour of switching networks and bands with no particular order in the *#*#4636#*#* testing mode.
After a while I figured that if I set phone to "GSM only" on USA bands in testing mode, but at the same time set it to "LTE prefered" in the normal network settings menu. I am able to set phone to Band mode 7 and set the network back to 2G in network settings keeping it on " GSM only" the whole time and only after this compicated algorithm and after a reboot 2G and 3G starts working. But any reboot after that revertes everything back to only LTE stage. Also if I get everything working but than reset network settings everything stops working again.
I have no idea what caused such an issue, I really hope someone can help.
Sorry couldn't post screenshots because of the "10 posts rule".
Hi folks,
This is my first post on here. I'm having a problem with my phone which I think is quite unique and I hope someone on here can help me fix it before I buy a new device.
I have a galaxy nexus (maguro) running cyaogenmod.
Previously I was running CM11 (cm-11-20141115-SNAPSHOT-M12-maguro) from the CM website and updated it to CM12.1 cm-12.1-20160719-SNAPSHOT-YOG7DAO8DL-maguro) a few weeks ago.
When I rebooted my phone it was running very slow (and getting very warm) so I did a factory reset and re-installed CM12.1.
It started working ok but I noticed that my phone was displaying 'emergency calls only' even though the network reception in the status bar was full, displaying 'H' (3g) and allowing me to connect to the internet using 3G.
Whenever I make a call it states 'Mobile network not available' and I cannot send text messages.
I tried phoning O2 and they gave me a new sim but the problem was still happening. I then tried putting my girlfriend's EE sim into the phone and I could make calls/send messages. I also went to France on holiday and could use my phone to phone/text using my O2 sim abroad. Whenever I put my O2 sim into another phone I can make calls and text.
So basically it is only when my O2 sim is specifically in the Galaxy Nexus that I cannot make calls/send texts but can still use 3g.
Oh yeah when I go to Settings>Mobile Network Settings>Network Operators the following available networks are shown:
O2-UK
T-Mobile UK
3 UK
vodafone UK
Orange
When I select O2-UK is states 'cannot connect at this time. Please try again later'
I've tried re-installing the older version of CM11 and today I tried wiping the entire phone (internal sd card etc) and it is still happening. Can anyone help? Is there something else I can wipe, or setting I can change?
Thanks in advance
Hi all,
I was using my P905 international version with LTE before my EU trip.
In EU, I lost the 4G connection in roaming. When i came back to home country, i found out LTE is not working, when i attempt to make a call, i get not registered network message and lose connection.
But I have phone function and EDGE internet in GSM only mode.
IMEI number is correct, and it is same as original.
Try to solve problem, I made factory reset more than 10 times. I installed Hong Kong, Taiwan region roms Kitkat and Lollipop, even Lineage os from here. But no luck, no LTE anymore.
When i play around with *0011# and Q > 0000>UE Settings & info > setting>Protocol>
I receive 4G connection for a while then I lose it again.
I tried Auto/Manual Network Choose too, nothing works but GSM only.
I checked EFS files, everything seems correct, no corrupted file there as I understand.
Do you guys have any idea how to solve LTE connection problem?
I think i found a solution. Not sure.
I download the CP / MODEM file from following link.
https://zfirmware.com/samsung-galaxy-note-pro-12-2-p905-repair-firmware/
I made hard reset from the system. I delete user files and reinstall it.
4G and 3G came back. Now it is connecting to 4G and can make phone calls. But the connection drops after 10 mins. I need to turn off mobile connection and reconnect it. It connects for few minutes or never.
I need to restart the device and getting 4G or 3G connection for a while again.
When it connects to 4G or 3G, if it is stable connection, I can make phone call too and does not receive not registered on network error.
Should I install Stock Rom again? or try to play with some config files?
Do you have any idea?
no idea?
is there anyone has nv_data files in EFS folder? I think mine is missing.
Hi, I have the same problem.
dannyt84 said:
Hi, I have the same problem.
Click to expand...
Click to collapse
did you try to do anything?
we need help here. Is there anyone can help us?
I do not want to give up with my P905.
no help?
do you have any idea to have stable 4G? Only LTE mode is not stable. I tried. Now GSM/WCDMA/LTE mode is running but, LTE is dropping very often. I get stable connection with other Samsung Device.
as i see, there is no help. I am changing to T835 256gb LTE version.