Database Info

[Q] Data Network confilict

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.
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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 !!!

[Q] No data transfer on UMTS

Hello all,
Been using this phone for ~6 weeks now.
Familiar with all 3G/H and no network issues - been there, done that...
Yet, I find it odd that while my phone is sometimes steady on UMTS, it has no actual data connection (Ping fails and also other tools), while calls can be carried out!
Also, at times, while network signal is showing as working, I'm actually w/o network connection (phone calls) at all.
And last, in several occurrences a day, while I'm not in a call and probably also not in 2G (I restricted my connection to WCDMA only), I get Network signal yet no data signal in the notification bar (WIFI is off).
I tried re-flashing 1.78 EU RUU (for my unbranded phone) with no change.
I tried rooting and putting Lee's ROM with no change.
I switched microsim from my provider with no change.
Is my only solution is sending it back to HTC for repair? or there is another solution to that frustrating (!!!) situation?
Many thanks for any response!

Phone calls does not work on oneplus one, cm 13

Hi,
I am usually a reader but on the last few month I am facing with signal problem on oneplus one, cm 13.
After a lot of searching I finally isolated the problem:
4G works fine- only data
H+ works fine when there is fully signal. Usually makes problems.
G works fine data and calls.
H- calls works only if there is fully H signal, 90% from the times if there is not full H signal phone calls are not able.
This what I tried to do:
I changed to lte/gsm, and made the default network 3G.
Notice ***: when I try to make a call the network changed from 4g to H+ or H, and after few seconds it shows call ended.
What I tried to do:
1. Factory reset - did not solve the problem.
2. Change mobile company- did not solve the problem.
3. I rooted the device and unlocked bootloader, then through twrp 2.8.3 I flashed 44s modem flashable, and it only broke my proximity sensors, then I flashed tugasensorsfix and it repair the proximity sensors. But still I can not call people!! Only on 2g but Who can live on 2g network??
I am desperate to help, I will appriciate any Kind of help.
Thank you,
Ido Levi! .

Phone calls does not work on oneplus one, cm 13

Hi,
I am usually a reader but on the last few month I am facing with signal problem on oneplus one, cm 13.
After a lot of searching I finally isolated the problem:
4G works fine- only data
H+ works fine when there is fully signal. Usually makes problems.
G works fine data and calls.
H- calls works only if there is fully H signal, 90% from the times if there is not full H signal phone calls are not able.
This what I tried to do:
I changed to lte/gsm, and made the default network 3G.
Notice ***: when I try to make a call the network changed from 4g to H+ or H, and after few seconds it shows call ended.
What I tried to do:
1. Factory reset - did not solve the problem.
2. Change mobile company- did not solve the problem.
3. I rooted the device and unlocked bootloader, then through twrp 2.8.3 I flashed 44s modem flashable, and it only broke my proximity sensors, then I flashed tugasensorsfix and it repair the proximity sensors. But still I can not call people!! Only on 2g but Who can live on 2g network??
I am desperate to help, I will appriciate any Kind of help.
Thank you,
Ido Levi! .

LTE is working fine, but no 3g and 2g network!!!!

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