Develop Bugs

Airplane mode on, network problem ZUK Z2

Hello, I'm having problem with my zuk z2. I've had phone for more than a month and it worked fine. I flashed mokee rom and was working excellent. After one update it couldn't connect to network and phone was stuck in airplane mode. It's not showing that airplane mode is on, only when I press power button it says it's on, but nothing happend when pressed. It detects both sim cards but can't get registered on network. Also in secret menu (*#*#4636#*#*) shows Radio off and can't turn it on, or change anything in that menu. I changed a lot of custom and stock roms, with locked and unlocked bootloader, nothing solved the problem. When flash fresh rom it has network (not after every flash), but after some times it just gets disconnected. Please, help me. If someone have solved this problem or have any idea what problem could be.
Edit: I found out that my sim slots IMEI change places, IMEI1 goes to slot 2.

i got the same problem

Same problem here with offician Indian ZUI

damn.. i thought this happened only with china rom.
didn't know it got same issue here.

Same problem

Same problem here. 2.0.133 ST official indian ROM. Any news about this problem?

I have the same issue running Slim 6 on zuk z2

i installed mokee os and the signal comeback again but actually not worked

Yes, I also installed mokee nightly 4/22 and its been working great. Signal is back

me too
Same problem Here.... bought on banggood and after one month network signal disappeared. Today I've unlocked the bootloader and installed Mokee stable ( 13-4-2017) and Lineage 14.1 of 16-01-2017 .... nothing! Still not working.
I suppose it is a failed lot from ZUK delivered from banggood/gearbest/ali ...
I've just wrote an email to zuk support in order to complain about it ...
Yes, because, right now I cannot send back in china at my expenses the equipment and pay for a substitution with another defective terminal.
I've just asked them hoto behave....
I suppose we need to start a class action like the one against samsung for S7 note
However, I'm very disappointed, 1 month and it was looking like a wonderful terminal ...fooooook.

Same problem here. Anybody please share the QCN backup (or valid link to download this) to try repair QCN and IMEIS ?

Same problem here:
I tested different roms and different baseband-versions still no network.
Edit: I also tried flashing it via an external tool - still does not work
http://www.androidbrick.com/zuk-z2-z2-pro-qpst-qfil-miflash-rom-flashing-guide/

I install the Z2plus_MIUI8_6.12.1_zukkati.zip ROM and recover the radios. I feel good!!!!!
Then I installed 2.5.334ST via Qfil, installed TWRP and install other ROMs and everything works fine.

Any Luck guys? Please help if anyone manage to resolve this issue.
Thank you!

Same with me
I had this problem also one month ago, bricked the phone and endly I could it get working again with lingeage on it. Was working perfect.
Today the problem is there again.
When I start the phone without the simcard airplane mode is off (when I touched the power button) with the simcard in the phone it starts with airplane mode on.
Is there a possibility to disable airplane mode complete?
Anyone any idea?

This problem has been around for ages, and no apparent solution to it. Sent it back to warranty and it got flashed frm Custom ROM and back to stock ROM with same results. Useless. Dead.
Got a partial refund instead .

Guys there is any solution?? I have this problem with my Zuk Z2.. Plz help me

Problem Solved
I also had same problem tried all methods described here and in zukfans.eu, but failed. At last discharging(shorting) some capacitor related to network IC did the job.

murtoz said:
I also had same problem tried all methods described here and in zukfans.eu, but failed. At last discharging(shorting) some capacitor related to network IC did the job.
Click to expand...
Click to collapse
hey, could you provide some more info? is it hard?

Same problem
I got the same problem, could someone help me with repairing this? Flashing roms didn't help
Could you say more information about discharging capacitor? Is it possible to do in home?

Mi Max not showing sim signal No Service

Hi guys,
I've got a Mi Max 64gb, it was working ok and then it auto updated to MIUI 9 and now i get no signal. If I go into setting, it will show my sim name (three) but thats it. It has no signal and I thus can not make or take calls. The status bar at the top says no service.
I purchased the phone second hand and everything was working fine so did a blacklist check just in case and both IMEI come back clear. Also when I switch from fin network automatically to manual, it will find a few networks but will no connect.
Anyone know what can be wrong? Phone has locked bootloader fyi.

waqas321 said:
Hi guys,
I've got a Mi Max 64gb, it was working ok and then it auto updated to MIUI 9 and now i get no signal. If I go into setting, it will show my sim name (three) but thats it. It has no signal and I thus can not make or take calls. The status bar at the top says no service.
I purchased the phone second hand and everything was working fine so did a blacklist check just in case and both IMEI come back clear. Also when I switch from fin network automatically to manual, it will find a few networks but will no connect.
Anyone know what can be wrong? Phone has locked bootloader fyi.
Click to expand...
Click to collapse
Anyone?

Ok so I got permission and unlocked the bootloader, installed TWRP and installed RESURRECTION REMIX 5.8.5 for hydrogen but its still showing no signal. Is there a way to check what can cause the problem as I've tried swapping sim trays (have a faulty one as spares).
Please show your holiday spirit and help me

waqas321 said:
Ok so I got permission and unlocked the bootloader, installed TWRP and installed RESURRECTION REMIX 5.8.5 for hydrogen but its still showing no signal. Is there a way to check what can cause the problem as I've tried swapping sim trays (have a faulty one as spares).
Please show your holiday spirit and help me
Click to expand...
Click to collapse
I really have no idea what your problem might be, but the panacea in all weird cases, irrespective of the particular symptoms, seems to be to fastboot flash a official global stable rom with the Miflash tool.
Then you have hopefully a base "known state" to start from.
If you still have no signal, you might well have a hardware problem.

cobben said:
I really have no idea what your problem might be, but the panacea in all weird cases, irrespective of the particular symptoms, seems to be to fastboot flash a official global stable rom with the Miflash tool.
Then you have hopefully a base "known state" to start from.
If you still have no signal, you might well have a hardware problem.
Click to expand...
Click to collapse
Hi Cobben,
Installed global stable rom, still having the same issue. Where do I go from here?

waqas321 said:
Hi Cobben,
Installed global stable rom, still having the same issue. Where do I go from here?
Click to expand...
Click to collapse
Hi,
I'm not any kind of expert at these kinds of (radio signal) problems today, though I do have a background in communications electronics construction (c.a. 1980's !)
If you did a complete format of everything before flashing the ROM, and it still doesn't work, I would guess you have a hardware problem.
Of course you want to double-check that your sim cards work in other phones.
I've had some rather weird problems caused by simcards.
You should even ask for a completely new simcard from some provider, and not put it into any other phone first.
How you could go about verifying that you truly have a hardware problem, without handing it over to a service center of some kind for testing, I really don't know.
Perhaps someone else has expertise in this area?
Otherwise, you just write it off as a loss, or sell it on Ebay for whatever you can get.

same with me. my phone not showing signal. the simcard is working before. it show no simcard after i flash twrp and supersu. the problem happen after restart phone. now i'm stuck searching this solution. help me.

Redmi Note 8 Pro doesn't recoginize SIM card

Hi everyone,
After my attempt to flash custom ROM to my RN8P, my device can't recognize my SIM card no more, before that it was working just fine.
The SIM card itself seems to be working just fine (chcecked on other device), it's not a problem with a carrier either.
Since then I've tried: rebooting, turining airplane mode on and off, even switching SIM cards. Also tried to install some other custom ROMS, as well as Official MIUI - unforunatelly without any success.
Has anyone faced similar problem?
I'd be glad for any ideas of yours on how to fix it

Tcheyy said:
Hi everyone,
After my attempt to flash custom ROM to my RN8P, my device can't recognize my SIM card no more, before that it was working just fine.
The SIM card itself seems to be working just fine (chcecked on other device), it's not a problem with a carrier either.
Since then I've tried: rebooting, turining airplane mode on and off, even switching SIM cards. Also tried to install some other custom ROMS, as well as Official MIUI - unforunatelly without any success.
Has anyone faced similar problem?
I'd be glad for any ideas of yours on how to fix it
Click to expand...
Click to collapse
Last month I've also faced the same issue with my rn8p like my whole nvram+ nvdata was encrypted (both imei were gone) while rooting my device in PE rom.
I did try a lot, like for 4-6 days but eventually ended up doing this:
I gone to mi care center, and before going I already had locked my bootloader so they could not understand that I have done something which will void my warranty also I closed my developer options. Basically I told them this crap has happened with me while updating to miui12 by normal method and asked for help. They kept my device for about 4-5 hrs and my all nvram nvdata was restored.
(Please don't go for flashing eng rom method it will erase your 2nd sim imei permanently.)
I hope this would help, just give it a try and thank me later

Rohanrsp07 said:
Last month I've also faced the same issue with my rn8p like my whole nvram+ nvdata was encrypted (both imei were gone) while rooting my device in PE rom.
I did try a lot, like for 4-6 days but eventually ended up doing this:
I gone to mi care center, and before going I already had locked my bootloader so they could not understand that I have done something which will void my warranty also I closed my developer options. Basically I told them this crap has happened with me while updating to miui12 by normal method and asked for help. They kept my device for about 4-5 hrs and my all nvram nvdata was restored.
(Please don't go for flashing eng rom method it will erase your 2nd sim imei permanently.)
I hope this would help, just give it a try and thank me later
Click to expand...
Click to collapse
Thank you sir for your reply.
I've done exacly the same thing as you did already.
Device is working again. But what a crazy adventure it was haha

Question No Network Service after latest software update

Hello! I updated my phone to MIUI Global 13.0.7 Stable (SKHINXM) and suddenly my phone has no service. The sim card is fine and working on other phones like it was before the update. Really unable to fix this issue. If it helps, in the testing window the 'Mobile Radio Power' is toggled off and however many times I try to switch it on, it automatically switches off. Please help! Thanks

rishab298 said:
Hello! I updated my phone to MIUI Global 13.0.7 Stable (SKHINXM) and suddenly my phone has no service. The sim card is fine and working on other phones like it was before the update. Really unable to fix this issue. If it helps, in the testing window the 'Mobile Radio Power' is toggled off and however many times I try to switch it on, it automatically switches off. Please help! Thanks
Click to expand...
Click to collapse
13.0.7 Stable (SKHINXM) is a stable beta.
Try to reset the phone or if your bootloader is unlocked flash with this tool
https://forum.xda-developers.com/t/flash-tool-guide-use-xiaomi-flash-tool.4262425/

Will flashing the file lead to me losing all data? Apologies if it's a stupid question

rishab298 said:
Will flashing the file lead to me losing all data? Apologies if it's a stupid question
Click to expand...
Click to collapse
yeap ,use micloud, or Mi phone assistant or others to backup.(wifi).

NOSS8 said:
yeap ,use micloud, or Mi phone assistant or others to backup.(wifi).
Click to expand...
Click to collapse
Okay thank you! Will try it in a few days time once I am able to give it the time needed.

It is happening to me too, I'm on stock 13.0.4 SKHMIXM, bootloader locked, it happened in 13.0.3 too. Sometimes, I see I have no services, no data, no GPS. But WiFi works great, so if I'm in house I don't always see it, but it means I cannot receive call!!!
I tried to enable/disable sim/data/location/airplane/etc nothing works.
Only way to re-make it works is to reboot the phone, and after 2 or 3 weeks it will happen again, this is the price to pay to have cheap chinese phone...

Try booting into Android with Safe Mode. (and disable Airplane Mode if enabled)
Power + Volume Up > Safe Mode
Or try this:
Settings > Updater > Tap on the "13" several times, this will enable additional Updater-features. Download the latest package and install it.
My guess is that your update may have been corrupt.
Other than that.. Factory Reset or connecting phone to PC and flashing ROM using Fastboot & Mi Flash or Terminal.
I've 13.0.7 and everything's flawless.

So the Xiaomi service center told me that it is possibly a motherboard issue. How can a software update suddenly awaken a hardware issue?

So I had not unlocked my bootloader via my Mi account and it needs mobile data for the same and hence I am unable to flash it since my network is still unavailable even after a factory reset. Any other way I can flash my phone with an older version of MIUI or I will have to submit my phone to the service center?

rishab298 said:
So I had not unlocked my bootloader via my Mi account and it needs mobile data for the same and hence I am unable to flash it since my network is still unavailable even after a factory reset. Any other way I can flash my phone with an older version of MIUI or I will have to submit my phone to the service center?
Click to expand...
Click to collapse
I used Google phone to unlock the bootloader you don't need cellular service just change the account phone number to Google phone one to receive the code work ed for me

jefffrom said:
I used Google phone to unlock the bootloader you don't need cellular service just change the account phone number to Google phone one to receive the code work ed for me
Click to expand...
Click to collapse
Could you elaborate the whole process? I do not know how to do this. Thanks

Same issue i am facing after MIUI updation for 13.0.3.0 SJCINXM ... suddenly all networks are vanished ... if i do manual search for networks then i get a message 'Couldn't search for mobile networks' . Voice call is only possible if wifi is enabled.. This is really a horrible experience and i am unable to find out a way to get rid of this situation.. I am using Redmi 9 Prime handset .. Before this update everything was surperb and flawless.

It is still happening with the latest Android 13 and MIUI14, it's frustrating... sometimes when the phone switch wifi/lte/wifi/lte/etc when you go outside, the modem crashes, it internally bootloop and the phone becomes warm and can lose 25% battery in like 15 minutes. Only way is to reboot the phone.

I had a similar problem. Were you able to solve it?

Question No Network Connection (RIL Dead)

Hello everyone. I have a realme GT Master Edition (RMX3360).
The problem I am facing is that, SIM network does not work. SIM is recognised but it won't connect to any network, so basically I cannot use the SIM card even though the phone knows what SIM is this.
I did try:
Factory reset.
Use Force LTE app to access phone information and switch bands (I noticed radio toggle is switched off, I tried turning it on but it won't).
Unlock bootloader, just to increase my chances.
Flash only modem/hlos/... related partitions. Did not work (phone bricked).
Flash OFP firmware. Did not work.
Flash EDL firmware (C.09), which I am currently using. Still same problem.
Different SIM cards.
My IMEI is fine, it is recognised. My baseband version is 4. I did search for the issue in realme community, and it seems quite popular as a lot of people suffer from the same issue on different models.
I live in Sudan, we got no 5G, no VoLTE or whatever. Could you help me please?

I have similar problem after reboot .I can't connect to network or it tooks long time . What helps me is switching to airplane mode.

drummer1839 said:
I have similar problem after reboot .I can't connect to network or it tooks long time . What helps me is switching to airplane mode.
Click to expand...
Click to collapse
Mine doesn't connect at all. I started to hate realme.

Switch to global rom maybe your sim card provider not supported switch to Rx3363

sym_m said:
Switch to global rom maybe your sim card provider not supported switch to Rx3363
Click to expand...
Click to collapse
Thanks for the suggestion. I did install RMX3363 EU ROM from EDL, it booted fine but the phone still won't connect to any SIM network.
I will also try Russia ROM to see if it would make any difference.
Update:
I did flash Russian ROM from EDL, still does not work. Modem version is also still 4. I will try Chinese ROM next.

Try Latam version this what they put in middle east but so far i think its hardware issue did u try the sim card on another phone? Did you try another sim provider on your phone ? Sometimes if the sim card too old it wont work

sym_m said:
Try Latam version this what they put in middle east but so far i think its hardware issue did u try the sim card on another phone? Did you try another sim provider on your phone ? Sometimes if the sim card too old it wont work
Click to expand...
Click to collapse
That LATAM version is 18 Gigabytes haha. It'd take a few days to download.
I came to think it might be related to modem images as it showed the same version repeatedly on both RUI 2 & 3. So I'll try different modem images.
Also I'll try custom ROMs and GSIs. If it failed I'll return the device as a very last resort.
Update:
I tried latest Official ProjectElixir till date, still same problem.
Update 2:
I gave up the device and replaced it with another one under warranty. I will not buy another realme phone anytime soon.

Mohamedkam000 said:
That LATAM version is 18 Gigabytes haha. It'd take a few days to download.
I came to think it might be related to modem images as it showed the same version repeatedly on both RUI 2 & 3. So I'll try different modem images.
Also I'll try custom ROMs and GSIs. If it failed I'll return the device as a very last resort.
Update:
I tried latest Official ProjectElixir till date, still same problem.
Update 2:
I gave up the device and replaced it with another one under warranty. I will not buy another realme phone anytime soon.
Click to expand...
Click to collapse
Sorry for your experience i have the phone also its okay
I was using Xiaomi phones before miui is better software than realme
But after Xiaomi remove the proximity sensor from there phones i start to avoid them

sym_m said:
Sorry for your experience i have the phone also its okay
I was using Xiaomi phones before miui is better software than realme
But after Xiaomi remove the proximity sensor from there phones i start to avoid them
Click to expand...
Click to collapse
I have a Xiaomi device too. The new virtual proximity sensor depends on hand movement to function. I don't use MIUI, but it is very fine at all situations.
Also I got a (256/8) GT Master replacement which is surprisingly working fine; being the same RMX3360.

Mohamedkam000 said:
I have a Xiaomi device too. The new virtual proximity sensor depends on hand movement to function. I don't use MIUI, but it is very fine at all situations.
Also I got a (256/8) GT Master replacement which is surprisingly working fine; being the same RMX3360.
Click to expand...
Click to collapse
Yes but the virtual proximity sensor is annoying to be honest specially on whatsapp voice notes
Glad to know thats your new phone work well but dont update to realme ui 4 beta it has alot of issues still

sym_m said:
Yes but the virtual proximity sensor is annoying to be honest specially on whatsapp voice notes
Glad to know thats your new phone work well but dont update to realme ui 4 beta it has alot of issues still
Click to expand...
Click to collapse
It was already updated to F.03, I heard there was screen flickering or something but I didn't notice any so far.
But I did notice the battery was draining fast on mobile data. Really fast.
Besides, I can always lean on post-market development.

Mohamedkam000 said:
It was already updated to F.03, I heard there was screen flickering or something but I didn't notice any so far.
But I did notice the battery was draining fast on mobile data. Really fast.
Besides, I can always lean on post-market development.
Click to expand...
Click to collapse
The general feel of the update is slower than the android 12 version
The battery will get better with you try to froze the app you dont use