"no radio" no cellular networks found - Lenovo ZUK Z2 (Plus) Questions & Answers

Hello.
Was charging my ZUK z2 overnight, when in morning woke up and my phone was really hot (latest AospExtended ROM V5.1 ROM). Unplugged it and saw that there is no cellular signal. Did a reboot and it still was hot, but no signal. Did a Qfil to original 2.5 indian rom, but that did not help also. If I go to service menu, it states "no radio". Have anyone experienced such an issue, and does it mean that something has boiled because of overcharge? I always charged it over night and everything was fine till today.
It does detect SIM card.
Hoping for help. Thanks.

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[Q] Strange Arc S signal / battery drainage problem

I bought myself Arc S, it came loaded with .62 firmware. On my initial run, battery ran for about a day, later on for two or maybe even three days. Then I started to work in another country. As far as I remember, battery life was the same, even though the network was not (where I work now is 2G only, in my home country 3G). Then one day messed around with a Xperia S apps, did a stupid mistake and started to get force closes with launcher. I had to repair software.
Since the software reinstallation, my battery life degraded to less than a day without even touching it. Therefore I installed Battery Monitor Widget, to see, what is going on. I noticed, that battery drainage is about 70-110 ma in average, as far as I know, it should be much lower (under 30ma?). I have to say, that I tested this with .62, .42 firmware and it's all the same. When I turn phone to airplane mode, energy consumption lowers to under 5ma - which is normal i guess.
It began to bug me even more, as we bought small alarm clock with radio. I noticed, that when this alarm clock is on, despite from 2 other phones our room, my Arc S is the only phone, which makes this kind of searching-for-signal or calling speaker interference (noise coming out of speaker). My phone does that all the time, even in idle mode. This can be also heard when we have our TV on on. So, if I don't want to hear that, I have to unplug the alarm clock or put my phone into airplane, which sucks.
I asked a guy next building, if he has the same problems with Arc S, and he says that his phone can live up to 5 days with one charge (is connected to the same network provider), so I guess it is not network related?
I wonder, is there a possibility, my phone's radio is broken somehow? Or it was faulty, and firmware reinstall somehow broke it to the end? So that is draining battery all the time - looking for signal? Any way to fix this? Flashing different base bands did not help, tried that already...anybody knows a fix for this, apart from returning it to my provider - since I'm 4 months away from my country
Anybody heard for any similar problem with Arc S?
Thanks in advance! (if needed, I can also post battery usage screenshot, but I think it's not much of a help)
lyteo said:
Then I started to work in another country. As far as I remember, battery life was the same, even though the network was not (where I work now is 2G only, in my home country 3G)
Click to expand...
Click to collapse
That seems like the issue here if I'm understanding you correctly. If you don't have 3G service where you currently are, and you did not turn off 3G, your phone will constantly try and find a 3G signal.
Airplane mode fixing the issue makes this seem even more likely. Try disabling 3G and see if it helps.
Problem is, that's what I did almost instantly when I came here, I set it to GSM only. One thing I noticed right now, when I check into About phone, under Mobile network type, my Arc S has: UNKNOWN, where my friends HTC says EDGE. Maybe here lies a problem? Why my phone can't detect network type?
Incredibly, I found the reason for my drainage and signal search. When I came into that country where I work now, my provider offered me to turn off data transfer (provider turns it off for me). Of course I did not want any unintended data transfer, so I turned it off by sending sms to service number. After I reinstalled software (that was my first reboot here), phone couldn't find network type for that reason, and was searching for it all the time. Yesterday I allowed data transfer by sms again, phone found EDGE network, can't hear any more noise on our alarm clock and battery drainage is about 4% per 8,5 hour. Excellent
I hope this helps anyone out there with drainage problems.
I think you can also turn off/disable data transfer/traffic with the Data traffic widget, if you want to avoid using data.
xperia arc s
hold up, i dont understand. so im pretty sure i have the same problem. get about 17 hours with berely using my phone on any rom/kernal/firmware. even with data turned off, betterbatterystats shows 'noor unknown signal' and 'no data conection'? i sued to able to get 3 or more days out of my phone??
I think there is an application, which might be keeping the phone alive.
dout it, still drains after a complete rom wipe

Random Shutdowns - E980

Hello, I have recently re-flashed to stock on my E980, I am running the phone on the AIO network as an unlocked device (although it would run fine if it were ATT locked as well).
I am looking for ideas to why I am having a problem. So it goes like this...
The phone randomly turns off. It seems to happen in my pocket, not on the desk. When I go to turn it back on, it is unresponsive unless I pull the battery or plug it into AC. If I plug it in before pulling the battery, it says not enough power to turn on. If I pull the Battery and turn it on the homescreen loads and I have plenty of battery in the upper corner (75% or so). When the homescreen loads, its fine for awhile, then back to step 1.
I am currently unrooted (just flashed back using LG flash tools) however the problem was first noted on a rooted stock ROM. I installed CM11 thinking that maybe it was something in the ROM that was initally causing this and a new ROM was in store for me... Did it on CM 11 too. Then I reflashed to Stock and I am still having this issue.
I have tried most everything and my thought is that the battery is either toast or not being recognized properly. I do not have immediate access to a different battery, but I think i can get my hands on one... If I replace it, I'm thinking it would take me an hour or so to replicate the problem and I still wouldn't be certain that was the culprit.
Anyone have any ideas, or things I could try out before trying to source a test battery, or does this not sound like a battery issue?
hey
i got the same problem
gonna have new battery soon and see if its from this
the sell man told me its could be the ROM
gonna try the modem of e980H
I've been having a similar problem as you, and actually had the device factory reset while in my pocket. Going to try and find a battery around my area, and hoping it fixes the problem. Have you noticed any heating issues as well before the reboot?
yea its getting so heated and drain the battery so fast
i think cos its trying to find single i had that problem with rezound too
i think there connection when its got heat -> drain the battey > and also kills the battery after few times

Z1C restarts itself

After a week with this phone i have so far loved it. I have found 2 issues while on a trip to Florida. 1 the GPS is good but from time to time it will give me cannot lock GPS signal (or GPS signal loss).
Secondly, for the past few days the phone restarts itself at least twice a day! I am running the latest 4.4.4 os (i did the stock upgrade when the phone prompted me there was one available).
Anyone else having these issue? (During the restarts, the phone is on standby with Stamina mode off). I only noticed it because i saw the Sony logo screen display and the phone turning on.

G3 gets warm while not in flight mode

I'm sorry for the title, but I couldn't think of a better description.
I usually put my D855 in flight mode at night and turn it off when I leave my house - when at home, I only turn WiFi on. While in flight mode after a reboot, my battery life is really good and it doesn't get warm at all. But when I turn it off but proceed to browse through WiFi, it gets really warm and the battery drains quickly. When I turn flight mode on again without rebooting, it still gets warm until I reboot.
This drain only occurs while the screen is on, not while in standby.
This is really weird.
This issue occurs on all roms I've tried (including stock roms) and with the V10 modem as well as with all V20 modems.
Do you think it's a hardware problem? My sim tray is damaged a bit, but that shouldn't cause an issue like that, the sim still gets recognized fine.
I'm using a Telco sim card and it's pretty old (it's still a non-LTE-sim), but unfortunately I don't have any other micro sim cards to try.
Any help is appreciated!
Thank you,
Xerionius

[HELP] Signal drops ,apps flicker

I have fulmics 5.3 , kernel 3.4.0., D855 version.
Day before yesterday I started losing signal for no apparent reason. This never happened before. I can't make a call without dropping signal (there is little reloading icon on the bars). One more thing I noticed is that when an app is opened (standard messaging app , fb messenger app ) app somewhat flickers when signal problem happens. Like it loses all the things inside the app frame like texts, contacts in fb messenger etc. Sometimes signal "holds" for two minutes and sometimes it doesn't last for 20 seconds.
So far I tried turning airplane mode on and off, restarting , resetting the sim card, I tested the phone with another sim card and tested my sim card in another phone (it's good). Also I tried changing from lte , gsm/wcdma , gsm only but with no luck.
Can someone help me because this is now a big problem. Should I try to do the fresh ROM install? I didn't installed or changed anything in last few days...
Update the ROM to the latest build and test it again, actually Fulmics is running v6.9.
I will do that today. The weird part is that I had version 5.3 for like maybe 6 months and this just started happening now.
Same here.
It started doing that two days ago (2017-02-28)
Rom 5.3 build MRA58K/Kernel 3.4.0-perf-gdcg0dd0/Security patch 2016-03-01
It seems it's doing that only when the battery is under 50% tho'... or when the phone gets hot / which it does when it starts loosing signal.
datajack said:
Same here.
It started doing that two days ago (2017-02-28)
Rom 5.3 build MRA58K/Kernel 3.4.0-perf-gdcg0dd0/Security patch 2016-03-01
It seems it's doing that only when the battery is under 50% tho'... or when the phone gets hot / which it does when it starts loosing signal.
Click to expand...
Click to collapse
I clean installed fulmics 6.9 and it seems good now. Try it , maybe it will help.
It's been around 30 hours since flash and it didn't happen yet.

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