No cellular network, no phonecalls possible - Lenovo Zuk Z2 Pro Questions & Answers

hello,
i´m having massive cellular network problems for a while now. The Z2pro won´t find cellular networks more often and even if i´m connected to a network, i´m not able to call anybody or receive calls. Everytime i try to call someone, it resets my network connection, like it would switch Airplane mode on/off. i first thougt it´s an provider problem but my mobile data somehow works fine and i´m able to call/write via WhatsApp.
Did anybody encounter similiar problems?
Phone is on 2.5.335 ST and rooted. I have no "signal booster" apps installed.
~Tuerkay

Someone tell me that they cant reach me with phone, I try to call myself with another phone, but z2 pro is normal.
Yesterday morning, the z2 pro screen off about 8 hours, I test it again but failure in same place and same network.
I turn on the screen, the signal is full and test its call and received function, all thing is normal.
I think, the problem may be background task killed.

Facing the same problem.

Related

Connectivity issues

Hey guys,
my SP has some serious problems with standard 2g(?) connectivity, I can't receive calls or SMS' until I have done either myself.
It feels like the phone turns off the 2g network after some time and only reactivates (for a bit) when I use them myself.
There is nothing to indicate the network not being on. The phone is completely stock.
Help much appreciated, this is driving me crazy!
When on internet via 2G you cant use sms and cant make calls. However it can also be a SIM card issue get a new one. This will solve most of the conectivity issues

Signal issues?

Is anyone having signal issues with the axon pro? My phone keeps going in and out of signal, and while my status bar says that I have "no service" I will have full bars, but only when connected to WiFi. When not connected to WiFi, all the bars are lost.
Is anyone else experiencing these signal issues or bug of this sort? Just trying to determine the root of the problem.
Sent from my A1P using Tapatalk
When did you start having problems? After the latest update?
I think it is a problem with the Wifi calling feature. After trying wifi calling and having problems (the other person couldn't hear me), I decided to turn it off.
After turning it off I started having crazy issues - the wifi calling would turn on even though I had turned it off. After turning off wifi completely, data wouldn't work so I rebooted the phone. After rebooting the phone, I couldn't get a signal at all. I tried rebooting the phone multiple times but the signal wouldn't come back. I switched SIMs and it still wouldn't work. At this point I was thinking there was a hardware problem with the phone so I was considering calling ZTE to get a new one. But I tried one last thing - I turned wifi back on and made a wifi call - the signal came back! So it is a software problem.
So I turned on wifi calling again but configured for "cellular preferred". It seemed to work well for a while, but then a few days later went crazy notifying me every few seconds that wifi calling was turning on/turning off.
To keep the phone stable I have now unfortunately had to setup the phone with "Wifi Calling Preferred". Thankfully soon after I did this I started getting error "REG09: Missing 911 address" so it doesn't try to use wifi calling anymore.
No point calling ZTE support because their phone support is appallingly bad. They won't understand the issue, they won't give me a ticket number. All they will say is either "reset the phone" or try to send me a new phone which will just make me lose time and lose data. They had a website where you could raise tickets for a little while...but it looks like it has been blocked now as it could have been too useful .
gflash2015 said:
When did you start having problems? After the latest update?
I think it is a problem with the Wifi calling feature. After trying wifi calling and having problems (the other person couldn't hear me), I decided to turn it off.
After turning it off I started having crazy issues - the wifi calling would turn on even though I had turned it off. After turning off wifi completely, data wouldn't work so I rebooted the phone. After rebooting the phone, I couldn't get a signal at all. I tried rebooting the phone multiple times but the signal wouldn't come back. I switched SIMs and it still wouldn't work. At this point I was thinking there was a hardware problem with the phone so I was considering calling ZTE to get a new one. But I tried one last thing - I turned wifi back on and made a wifi call - the signal came back! So it is a software problem.
So I turned on wifi calling again but configured for "cellular preferred". It seemed to work well for a while, but then a few days later went crazy notifying me every few seconds that wifi calling was turning on/turning off.
To keep the phone stable I have now unfortunately had to setup the phone with "Wifi Calling Preferred". Thankfully soon after I did this I started getting error "REG09: Missing 911 address" so it doesn't try to use wifi calling anymore.
No point calling ZTE support because their phone support is appallingly bad. They won't understand the issue, they won't give me a ticket number. All they will say is either "reset the phone" or try to send me a new phone which will just make me lose time and lose data. They had a website where you could raise tickets for a little while...but it looks like it has been blocked now as it could have been too useful .
Click to expand...
Click to collapse
Trying posting to their Twitter account and report the issue, that is how i got their attention. Also when you call them (here in the USA) tell them that you have already done a reset on your phone and that did not resolve the issue!!!
gflash2015 said:
When did you start having problems? After the latest update?
I think it is a problem with the Wifi calling feature. After trying wifi calling and having problems (the other person couldn't hear me), I decided to turn it off.
After turning it off I started having crazy issues - the wifi calling would turn on even though I had turned it off. After turning off wifi completely, data wouldn't work so I rebooted the phone. After rebooting the phone, I couldn't get a signal at all. I tried rebooting the phone multiple times but the signal wouldn't come back. I switched SIMs and it still wouldn't work. At this point I was thinking there was a hardware problem with the phone so I was considering calling ZTE to get a new one. But I tried one last thing - I turned wifi back on and made a wifi call - the signal came back! So it is a software problem.
So I turned on wifi calling again but configured for "cellular preferred". It seemed to work well for a while, but then a few days later went crazy notifying me every few seconds that wifi calling was turning on/turning off.
To keep the phone stable I have now unfortunately had to setup the phone with "Wifi Calling Preferred". Thankfully soon after I did this I started getting error "REG09: Missing 911 address" so it doesn't try to use wifi calling anymore.
No point calling ZTE support because their phone support is appallingly bad. They won't understand the issue, they won't give me a ticket number. All they will say is either "reset the phone" or try to send me a new phone which will just make me lose time and lose data. They had a website where you could raise tickets for a little while...but it looks like it has been blocked now as it could have been too useful .
Click to expand...
Click to collapse
Those are precisely the issues I am having as well
Sent from my A1P using Tapatalk
I got some signal issues too I only get 2 to 3 tower usually but at time its completely dead and until I reboot my phone signal doesn't Pop up ...and at times even though I have like 2 signal tower it shows emergency calls oly...I don't use WiFi calling as am on straight talk.but the WiFi calling feature suddenly pops up in the notification bar giving an error message u can't swipe that off the notification bar too u gotta go to MORE in settings and switch on and switch off the WiFi calling feature to remove the error msg from the notification bar .
Signal keeps fluctuating call clarity is a lil bit poor comparing it to my old lg g2 . macro focus doesn't work at all u can't focus a thing that's really close in auto. I dono what to do with this phone.it just doesn't satisfy the basic need of a phone voice calls and message(messages take a long time to send ).
vickytarunl said:
....but the WiFi calling feature suddenly pops up in the notification bar giving an error message u can't swipe that off the notification bar too u gotta go to MORE in settings and switch on and switch off the WiFi calling feature to remove the error msg from the notification bar .....
Click to expand...
Click to collapse
I see the same issue. I have created a thread for it. Not sure how widespread the issue is
http://forum.xda-developers.com/zte-axon/general/wifi-calling-notification-issues-b25-t3290959
Coldheat1906 said:
Trying posting to their Twitter account and report the issue, that is how i got their attention. Also when you call them (here in the USA) tell them that you have already done a reset on your phone and that did not resolve the issue!!!
Click to expand...
Click to collapse
Again, not worth my breath. If you check the new thread someone called up ZTE about the issue and they blamed it on T-Mobile (which is complete and utter BS). When I called about the camera issues they tried to blame it on Google. Why waste my time to be told lies? The support is completely s***.
gflash2015 said:
Again, not worth my breath. If you check the new thread someone called up ZTE about the issue and they blamed it on T-Mobile (which is complete and utter BS). When I called about the camera issues they tried to blame it on Google. Why waste my time to be told lies? The support is completely s***.
Click to expand...
Click to collapse
Well hopefully ZTE will come out with a fix really soon, I don't think that they want to lose the users they have.......
Loss of at&t signal
In one location that I frequent I always sit there without a cellular signal while people around me are using their cell phones
LTE signal strength sporadic
My Pro shows a few bars for a couple seconds,then NO SIGNAL for a few seconds. ZTE is not fixing this problem? It has been going on since January. Now is September.
For those with this issue, does a factory reset change this behavior, or at least the frequency of it?

Temporary dialer disconnection when 4G is on

Good day, guys. I have a problem. After update to 8.1 I have an issue with recieving calls, when some people call me and 4G mode is on (4G network type is enabled in mobile network settings) sometimes they can not dial to me, it seems like my phone is turned off and there is no signal. If I change mobile network mode to 3G, there is no problems. Also when people can't call me, I can make calls to them and there is no problems with connetion and mobile data. (connection level is full).
It looks like there is some energy saving mode of radioband module and It doens't work properly.
So I've changed SIM-card and changed the mobile operator to another, the problem still exists.
In the safety mode, the problem still exists too.
Also factory reset from recovery menu (wipe data) didn't help.
Is there any fix of this problem? I can't redownload the firmware with OST because of error. Thank you a lot.
I have similar problem, did you find out how to solve it?

problem with india network.

I recently bought rog phone 2 from flipkart in India. My device is working fine. But i noticed there is one problem with the phone and it had happened many times that it automatically reset its network.
Like it automatically turns off wifi ,both sim signal for 10 sec and turn it back on again. This happens once or twice in a day at any period of time.
Sometimes network goes blank and i need to restart the device.
Please help me out if anyone finds the solution. Or people having the same problem.
same
i also have this problem, and im from philippines, seems like the phone triggered the airplane mode, wifi, bluetooth and sim network on and off randomly, you didnt notice the wifi on and off because wifi connects very fast..
jeypee37 said:
i also have this problem, and im from philippines, seems like the phone triggered the airplane mode, wifi, bluetooth and sim network on and off randomly, you didnt notice the wifi on and off because wifi connects very fast..
Click to expand...
Click to collapse
Please share my message futher. So that it spread amongst people. Who would provide any solution for that.
Thank u
prakhar goel said:
I recently bought rog phone 2 from flipkart in India. My device is working fine. But i noticed there is one problem with the phone and it had happened many times that it automatically reset its network.
Like it automatically turns off wifi ,both sim signal for 10 sec and turn it back on again. This happens once or twice in a day at any period of time.
Sometimes network goes blank and i need to restart the device.
Please help me out if anyone finds the solution. Or people having the same problem.
Click to expand...
Click to collapse
you could try do disable Wi-Fi scanning - search in the settings for 'scanning' and under Wi-Fi scanning, disable wifi and bluetooth. it may just fix the issue... so i have read on the telegram group forum

Question Calling issues with both VoWiFi and VoLTE

I am having issue when calling (outgoing) to any person over WiFi or LTE. The call won't connect at all but the other person's phone will ring and I won't hear a thing. I have to enter flight mode for few seconds, disable flight mode and then I will be able to make calls again.
What could be the possible issue? This has become a very bothersome and I am suspecting that some users are also unable to reach me at times. I tried resetting the phone, did a network reset, and played with call over WiFi and LTE settings. Nothing seems to fix the issue. Is this a common problem with Vivo devices?
Any work around is appreciated.
TIA.

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