Develop Bugs

[Q] New Nokia Lumia 900 Continually Crashes When WiFi is On

Hi there
Wondering if any of you kind folks can help me understand what is happening on my phone.
I've a new Nokia Lumia 900 which I've had for about 2 weeks. Unfortunately (rather fortunately!) I won it at a Microsoft event, so I can't exactly take it back to a retailer for repair or question.
My phone seems to intermittently crash. Most times it just reboots but occasionally it's just dead and I have hold down the power button to reset. Anecdotally it seems to happen most when I have WiFi turned on, though it does happen occasionally without WiFi on.
I have reset back to factory setting twice and also turned off all background process I can. Of course there are still a few applications that I can't turn off from running in the background.
Despite this, the phone still crashes A LOT with WiFi on (2 to 6 times a day) and occasionally with WiFi off (once every 2 or three days).
Does anyone know what is happening and how I can find a fix?
PS: Both the phone and Zune report that there are no updates applicable.
Cheers.

Look in settings/about and take note of the Firmware and OS versions and kindly write them down on here, If you have OS ver 8862 then you already have the latest version and need to take your phone to a Nokia Care centre or send for repair as it should not crash at all, If you have a lower ver ie: 8107, 8773 or 8858 then maybe you can force an update through Zune, Which may well fix your issue?

Tried that...
AndyFZ1S said:
Look in settings/about and take note of the Firmware and OS versions and kindly write them down on here, If you have OS ver 8862 then you already have the latest version and need to take your phone to a Nokia Care centre or send for repair as it should not crash at all, If you have a lower ver ie: 8107, 8773 or 8858 then maybe you can force an update through Zune, Which may well fix your issue?
Click to expand...
Click to collapse
Thanks for your reply Andy
I did exactly that, checked the OS version, and I discovered that I did NOT have the latest OS version but Zune reported I did.
As a result I contacted Nokia to explain the difference in OS version availability published on the Australian support site vs the fact that Zune reports the OS version is up to date. I was told that not all OS versions are available across all Lumia 900 phones and regions! Er... Whatever...
However, the support staff did recognise I'm having an issue and has lodged a ticket with the "appropriate department". Time will tell how response they are.
I guess I either have to wait for the OS update to be made available to have their support technicians contact me back to resolve the issue.
Either way I will update this thread with the results in case anyone else has a similar issue.

Fingers crossed they get it sorted for you,
However if you do decide to be cheeky there is a way of forcing the update via Zune, As you click update and before it tells you you already have the latest firmware etc you disconnect your lan cable, It is a bit tricky and timing is the key, You may have to try several times etc,
Or as a last resort http://forum.xda-developers.com/showthread.php?t=2128295
In either case I cannot guarantee it will fix your issue but it could save you from boredom as you await a fix.

AndyFZ1S said:
Fingers crossed they get it sorted for you,
However if you do decide to be cheeky there is a way of forcing the update via Zune, As you click update and before it tells you you already have the latest firmware etc you disconnect your lan cable, It is a bit tricky and timing is the key, You may have to try several times etc,
Or as a last resort http://forum.xda-developers.com/showthread.php?t=2128295
In either case I cannot guarantee it will fix your issue but it could save you from boredom as you await a fix.
Click to expand...
Click to collapse
Ha! Yes.... Well I've not heard anything from them yet. Day 2 so I'm not quite bored yet
However, on a positive note the updates came through tonight via Zune without pulling of LAN cables (ED: read hair), so all's good on that front. Time will tell if the updates solve the problem, but it did 3 cumulative updates so I guess there was a bit to do...
Thanks Andy

[Q] Disconnected because service is unavailable

Hoping someone can provide some direction. First and foremost I am not a HTC savvy so although there are a few threads here about the same issue none of them relate to me as I have not rooted the phone nor flashed to custom ROMs or anything to that nature. I am simple user of the phone... Now.. to the topic.. so I bought this phone for my brother in law last year as a birthday present, and at the time I had a working phone so I didnt put my mind too much to it.. but I did liked the phone very much. Two months ago, I decided to purchase one of these, so I bougtht an HTC ONE X Phone S720e Android 32GB 8MP 3G WiFi GPS Bluetooth Unlocked White. I don´t recall what versión of Android it carried at the time but looking at the specs it should had come with Android 4.0.3. After loading it up, transfering my files on to it and loading some basic apps, whatsapp, email, Skype... it off coursed asked for a software update two times which I went ahead and did. The last one it installed added Android 4.2.2 and HTC Sense 5. It was working fine, layout changed considerably... now after doing another of the updates to applications and software, specifically the transfer files update it suddenly quit recognizing data services completely. I though it might be something with the micro sim, so I tried testing a couple of others, it didnt make a difference so I decided to back up my contacts and information I had on the phone and did a Factory reset. It wipped it clean but issue remains the sames, it is unable to even recognize the sim card is missing and when I go into settings I see the message Disconnected because service is unavailable.
Reading online, saw a few folks stating that this situation was related to software updates.. so I was wondering if I could get some help on how to get this fixed. Not sure what to do, downgrade to 4.0.3 or how could I get it resolved so appreciate some direction here.

If you go to settings - about - phone identity, does it still shows the imei ? Seen many people here having their imei gone from their phone and becomes an iPod since we can't write it back. Tho you are on stock, so better send it for repair.
Sent from my HTC One X

n1kos said:
If you go to settings - about - phone identity, does it still shows the imei ? Seen many people here having their imei gone from their phone and becomes an iPod since we can't write it back. Tho you are on stock, so better send it for repair.
Sent from my HTC One X
Click to expand...
Click to collapse
It shows up as unknown actually... is this a software related issue then? Im concerned about the other phone going through the same situation... should no updates be installed to it then? That makes it fairly useless and might prefer to send it back and try to get a refund instead.

same problem for me, still wait for fix

poussymonster said:
same problem for me, still wait for fix
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Click to collapse
Can someone tell where is the IMEI physically located on the phone?

marcosballesterosr said:
Can someone tell where is the IMEI physically located on the phone?
Click to expand...
Click to collapse
see in the list of micro sim card

December 26 2017 update LS992ZVE

I just received a new update on G5 sprint to upgrade to LS992ZVE_5. Will it relock my sim card

kleinkel said:
I just received a new update on G5 sprint to upgrade to LS992ZVE_5. Will it relock my sim card
Click to expand...
Click to collapse
i want to know the same, if somebody update please tell us..

Stay safe and don't try.

i take the risk... and the result its... My phone still unlocked ... u can upgrade guys
PD: i unlock my phone with optopus box in past version

Did the update add any new feature

still unlocked!
NinjarD said:
i want to know the same, if somebody update please tell us..
Click to expand...
Click to collapse
I have updated to zve... my phone is still unlocked! :good:

Phone remains unlocked. Unfortunately, it wipes APN data and now I can't go in and edit APN. Anybody have any work arounds? I can't add an APN (no option) in the settings menu (settings - more - mobile networks - access point names) nor in the ##3282# menu with the MSL. It's been a huge pain and I'm currently trying to use this phone in Peru. It can make and receive calls/texts but will not access the internet without being able to add/edit APN's.

Hi, I just want to know can I downgrade ZVE update

Mortal Eternity said:
I have updated to zve... my phone is still unlocked! :good:
Click to expand...
Click to collapse
I have a problem.... I upgraded to zvc ..my phone got unlocked remotely but my facebook..twitter.instagram and whatsapp won't work well with mobile data.. How can I solve

didospike said:
Hi, I just want to know can I downgrade ZVE update
Click to expand...
Click to collapse
No

kleinkel said:
Did the update add any new feature
Click to expand...
Click to collapse
It's a security update, so no. If you guys want to keep your unlock, DON'T UPDATE.

dont update.. As i unlocked my phone from the hidden menu app but as i updated it got locked (and i can't seem to find any solution whosoever).. You cant go back and downgrade and you cant unlock it again with the hidden menu app..
But if anyone knows how to do it please i beg you i need help as it was my gift to my father and i fu..ed it up :crying:

Why,LG, why?
Gah this is so frustrating. I had my phone unlocked by sprint and am currently abroad, but had the wonderful combination of ideas to both update to ZVE and reset network settings. I've already been using this international sim for five months and everything was fine and dandy, but now I can't add an APN so I can't connect to the internet (the apn settings are greyed out) - I even spoke to Sprint for 3 hours and they concluded there's nothing they can do. I'm thinking there's one of three things to be done: change the APN by some "hack" like a dialer code or ADB, revert to previous firmware, or connect to the internet somehow without an APN.
Does anyone know how to do either of three things? Please help.
Update: I called LG and Sprint for a combined total of about 5 hours. LG confirmed that indeed with ZVE they disabled manual changing of APNs (due to "security") and they don't even have a special code or anything to fix that. They said I should ask Sprint to maybe push an ota apn for the international carrier but they said they can't do that. The LG guy said that he would add a ticket (they can't even talk to anyone higher up) to tell the dev team to add an option again to change APNs but I don't know how likely that'll be. It's just super frustrating that LG pushed an update to break international data and now says they can't do anything about it. Reminds me of my bootlooped Nexus 5x that they said they couldn't do anything about. Smh lg, smh.

BuntzenB said:
Gah this is so frustrating. I had my phone unlocked by sprint and am currently abroad, but had the wonderful combination of ideas to both update to ZVE and reset network settings. I've already been using this international sim for five months and everything was fine and dandy, but now I can't add an APN so I can't connect to the internet (the apn settings are greyed out) - I even spoke to Sprint for 3 hours and they concluded there's nothing they can do. I'm thinking there's one of three things to be done: change the APN by some "hack" like a dialer code or ADB, revert to previous firmware, or connect to the internet somehow without an APN.
Does anyone know how to do either of three things? Please help.
Update: I called LG and Sprint for a combined total of about 5 hours. LG confirmed that indeed with ZVE they disabled manual changing of APNs (due to "security") and they don't even have a special code or anything to fix that. They said I should ask Sprint to maybe push an ota apn for the international carrier but they said they can't do that. The LG guy said that he would add a ticket (they can't even talk to anyone higher up) to tell the dev team to add an option again to change APNs but I don't know how likely that'll be. It's just super frustrating that LG pushed an update to break international data and now says they can't do anything about it. Reminds me of my bootlooped Nexus 5x that they said they couldn't do anything about. Smh lg, smh.
Click to expand...
Click to collapse
Welcome to my hell. I tried to warn the community in my comment about this exact issue. I spent weeks talking to Sprint and LG's useless "technical support." LG reps kept insisting that LG has nothing to do with software updates which is completely wrong and extremely ignorant of them to think that. Sprint advanced tech support even conferenced LG in on a call once that lasted about 45 minutes and the LG rep kept saying they don't have anything to do with the updates. Finally, we got him to agree that they did make the updates. But, even that was a waste of time. It wasn't until I wrote to LG through their website that I got several responses (mostly the same as before - walking you through how to change APN settings) but, finally in those conversations, I was able to get LG support to admit that they had a problem with ZVE and that they are the ones that broke it. The last response I got was that their developers are aware of the problem and are working to fix it. It probably won't be fixed until the next software update and they won't give me any timeline as to when that will be. It's been a couple of weeks since I last talked to LG. My advice is to do the same and file a bug error on their website. Calling in is a complete waste of time. They need more reports on this so that they know this is a big issue. You can't even go in with your MSL and change APN's. If they were really worried about security, they would at least allow the carriers to give you permission to modify the APN. Seems completely nonsensical to me.

Never update if you have an unlock. I've said this a hundred times... Maybe you can get on eBay and get a remote unlock.

somy body plz can you post this upgrade ?
kleinkel said:
I just received a new update on G5 sprint to upgrade to LS992ZVE_5. Will it relock my sim card
Click to expand...
Click to collapse
somebody plz can you post this upgrade ? mb it will help to recover some phones who has updated allready.
i think it stores on ota directory on your ls992

acidlenin said:
somebody plz can you post this upgrade ? mb it will help to recover some phones who has updated allready.
i think it stores on ota directory on your ls992
Click to expand...
Click to collapse
It stores in /cache which you can't get to without root. I didn't see how it would help anybody either.

Sympathy, empathy
kephaisrock said:
Welcome to my hell. I tried to warn the community in my comment about this exact issue. I spent weeks talking to Sprint and LG's useless "technical support." LG reps kept insisting that LG has nothing to do with software updates which is completely wrong and extremely ignorant of them to think that. Sprint advanced tech support even conferenced LG in on a call once that lasted about 45 minutes and the LG rep kept saying they don't have anything to do with the updates. Finally, we got him to agree that they did make the updates. But, even that was a waste of time. It wasn't until I wrote to LG through their website that I got several responses (mostly the same as before - walking you through how to change APN settings) but, finally in those conversations, I was able to get LG support to admit that they had a problem with ZVE and that they are the ones that broke it. The last response I got was that their developers are aware of the problem and are working to fix it. It probably won't be fixed until the next software update and they won't give me any timeline as to when that will be. It's been a couple of weeks since I last talked to LG. My advice is to do the same and file a bug error on their website. Calling in is a complete waste of time. They need more reports on this so that they know this is a big issue. You can't even go in with your MSL and change APN's. If they were really worried about security, they would at least allow the carriers to give you permission to modify the APN. Seems completely nonsensical to me.
Click to expand...
Click to collapse
How does one file a bug report? I looked and couldn't find it.
As to the reason I updated my phone, I'm very involved in security and need the newest security patches I can get. Also, I don't know/don't think a remote unlock will help, I think it is actually fully impossible to add an APN at this point... I even had sprint lock and unlock my phone...

BuntzenB said:
How does one file a bug report? I looked and couldn't find it.
As to the reason I updated my phone, I'm very involved in security and need the newest security patches I can get. Also, I don't know/don't think a remote unlock will help, I think it is actually fully impossible to add an APN at this point... I even had sprint lock and unlock my phone...
Click to expand...
Click to collapse
Sometimes you can't have your cake and eat it too. A bug report will get you nowhere. I've filed legitimate bug reports with solutions and didn't even get a reply. They did this on purpose and don't care if it effects you. They don't want you to use your device the way you want, they want you to use it the way they want.

I read this in other post
Idk this work
HiddenMenuCall
Google, download and install HiddenMenuCall_1.7.apk
Go to LTE Settings
Go to APN Settings
Set APN there and use "default,dun,fota" as APN Type
Restart phone
Done!

replacement motherboard for G4 came with 'hacked' ROM

Hi,
Just something that worries me a lot atm and wanted to ask/alert people about. Probably 'a thing' that everybody knows about (?) in which case .. .well.. carry on, nothing to see here
I ordered a replacement motherboard for my LG G4 (H815) on ebay and the board I got does not seem to have come with the Stock ROM on it although it does appear at first to be stock.
When going through the pre-installed Apps I noticed that there was something odd though : it comes pre-installed with SuperSU (which starts automatically at boot). Even worse : I can't remove that SuperSU either, only Disable it.
When I tried to Unlock the bootloader at LG's website and replace the ROM (something I had done before so I know the procedure) I was told that the IMEI and DeviceID do not match. Replacing the ROM seems to not be an option even though it probably was rooted before to install the current ROM. I haven't tried to flash it with LG Flash yet ... so maybe that'll be the way out.
The more I started thinking about it the more nefarious this seems to me : a replacement motherboard with a locked bootloader that can't be unlocked (the ROM on it is Android 5.1 btw, not 6) which starts a SuperSU service at boot that most people probably wouldn't even notice and which has access to :
- Google Play billing service
- Retrieve running apps
- Run at Startup
- Prevent Phone from sleeping
That service could turn that phone into a zombi and considering that more smartphones than this one are probably in the same state things could get ugly.
What's worse, although I did disable it, there really is no way of really knowing that the smartphone is indeed 'safe'. I'm surely not going to use it for Home Banking atm! But even email or adding a Google account , or using facebook, etc already are things you probably shouldnt do when somebody else may have root on your smartphone..
kind regards,
Benny

kleykenb said:
Hi,
Just something that worries me a lot atm and wanted to ask/alert people about. Probably 'a thing' that everybody knows about (?) in which case .. .well.. carry on, nothing to see here
I ordered a replacement motherboard for my LG G4 (H815) on ebay and the board I got does not seem to have come with the Stock ROM on it although it does appear at first to be stock.
When going through the pre-installed Apps I noticed that there was something odd though : it comes pre-installed with SuperSU (which starts automatically at boot). Even worse : I can't remove that SuperSU either, only Disable it.
When I tried to Unlock the bootloader at LG's website and replace the ROM (something I had done before so I know the procedure) I was told that the IMEI and DeviceID do not match. Replacing the ROM seems to not be an option even though it probably was rooted before to install the current ROM. I haven't tried to flash it with LG Flash yet ... so maybe that'll be the way out.
The more I started thinking about it the more nefarious this seems to me : a replacement motherboard with a locked bootloader that can't be unlocked (the ROM on it is Android 5.1 btw, not 6) which starts a SuperSU service at boot that most people probably wouldn't even notice and which has access to :
- Google Play billing service
- Retrieve running apps
- Run at Startup
- Prevent Phone from sleeping
That service could turn that phone into a zombi and considering that more smartphones than this one are probably in the same state things could get ugly.
What's worse, although I did disable it, there really is no way of really knowing that the smartphone is indeed 'safe'. I'm surely not going to use it for Home Banking atm! But even email or adding a Google account , or using facebook, etc already are things you probably shouldnt do when somebody else may have root on your smartphone..
kind regards,
Benny
Click to expand...
Click to collapse
Wow that's unfortunate
Maybe try @steadfasterX's SALT utility and see what info it gives you. Also, I assume the IMEI is from the software and not the back of your phone (e.g. the one from your previous motherboard)

ThePiGuy said:
Wow that's unfortunate
Maybe try @steadfasterX's SALT utility and see what info it gives you. Also, I assume the IMEI is from the software and not the back of your phone (e.g. the one from your previous motherboard)
Click to expand...
Click to collapse
hi, Thanks, I'll have a look at Salt Utility. Got the IMEI from the OS, not the sticker. It's actually not just the mobo that I replaced. This G4 is 'lego-ed" togheter from parts sourced all over the place so do not have the original housing I have a second, unlocked G4. This one was supposed to be my backup. Maybe the unlock simply fails because somebody else already unlocked it before - not sure if they could relock it afterwards , maybe they used Salt and didn't unlock...
Thanks for the response.
Edit : Come think of it, maybe the Device ID is not only dependant on the Motherboard but calculated from information gathered from other parts in the system as well like the screen , cameras, sim card reader ... who knows :-/ Might not be able to unlock any LG when any of those unknown parts is replaced.

kleykenb said:
Edit : Come think of it, maybe the Device ID is not only dependant on the Motherboard but calculated from information gathered from other parts in the system as well like the screen , cameras, sim card reader ... who knows :-/ Might not be able to unlock any LG when any of those unknown parts is replaced.
Click to expand...
Click to collapse
. As long as you talk about the device ID displayed in fastboot it is coming from your mainboard and can't be changed. if you talk about the Android device ID it's generated by the ROM and that one can be changed easily
Sent from my LG-H815 using XDA Labs

steadfasterX said:
. As long as you talk about the device ID displayed in fastboot it is coming from your mainboard and can't be changed. if you talk about the Android device ID it's generated by the ROM and that one can be changed easily
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Good to know.
The Device ID came from fastboot in this case.
(and thanks for Salt Utility

kleykenb said:
Good to know.
The Device ID came from fastboot in this case.
(and thanks or Salt Utility
Click to expand...
Click to collapse
I'd be interested to know whether the IMEI and device model from SALT match the values displayed in the OS

Networ Signal Loss after update

Hi..
I have a Zenfone 5Z, bought on GearBest, so yesterday it updated to the latest WW version o it's on. After updating it lost the Network Signal, even after a several restarts. I've downgraded it to WW__ZS620KL_80.10.8.54_MP_user_20180517175955 , but still no network signal.
I've tested my simcard in other phones, other simcards in my phone, but still nothing. When i try manual network seach, it gives an error, and when i select automatic network, it says that is already registered to network, and when i try to make a call, it says me to turn off airplane mode to make a call. Also when i remove and reinsert the simcard it recognizes it a makeme chose betwen sim 1 and 2.
I've attached few screenshots too.
Pleaase help me guys!
P.S. i gave this phone to my wife on her birthday, now, she is mad with me!

HI,
I had this same issue, later i checked up with service center, they told charging pcb(which contains antenna lines) was water damaged.
Then got replaced the part and started working again.

vishal hatti said:
HI,
I had this same issue, later i checked up with service center, they told charging pcb(which contains antenna lines) was water damaged.
Then got replaced the part and started working again.
Click to expand...
Click to collapse
Yes, but after an update you lost network signal?
My phone never got wet, and never fell down.
Thanks!

vileladelima said:
Yes, but after an update you lost network signal?
My phone never got wet, and never fell down.
Thanks!
Click to expand...
Click to collapse
Hi, Yes, even I had not let my phone get wet or dropped but phone is so worst when it comes to water resistance.
Smallest moisture in hands while using the phone is enough to spoil the PCB.

vileladelima said:
Hi..
I have a Zenfone 5Z, bought on GearBest, so yesterday it updated to the latest WW version o it's on. After updating it lost the Network Signal, even after a several restarts. I've downgraded it to WW__ZS620KL_80.10.8.54_MP_user_20180517175955 , but still no network signal.
I've tested my simcard in other phones, other simcards in my phone, but still nothing. When i try manual network seach, it gives an error, and when i select automatic network, it says that is already registered to network, and when i try to make a call, it says me to turn off airplane mode to make a call. Also when i remove and reinsert the simcard it recognizes it a makeme chose betwen sim 1 and 2.
I've attached few screenshots too.
Pleaase help me guys!
P.S. i gave this phone to my wife on her birthday, now, she is mad with me!
Click to expand...
Click to collapse
I have the similar issue.Is it resolved for you ?

SenthilNaga said:
I have the similar issue.Is it resolved for you ?
Click to expand...
Click to collapse
Nop, i had to send the phone to Asus authorized service center, they changed the SUB PBA...
I works for exact 30 days and, after a restart becouse the system crashed, it has no network again!
so i sent it to serce center again today...

As I don't see a reply stating how it got resolved, I will post my experience of this issue. Firstly, this issue is fairly common with Huawei 5Z. The reason given by local service team here is at times if the phone experiences some jerk the contact from antenna to motherboard breaks. At times it could still remain connected in which cases person may get signal some time and get airplane mode at others, in many cases airplane mode is ON permanently. Apparently they have some kind of a glue with which they can attach the antenna permanently. Once I got it done, the problem has not resurfaced.
P.S. this problem has got nothing to do with software, so restart, factory reset etc. will not work, nor does it happen with software upgrades. It is purely mechanical in nature and does not need even require a drop. but the solution is quite simple provided the service centre team knows. In case they don't just ask them to stick the antenna connector with a proper glue and it should be sorted.

What am I supposed to do with my set. I imported it to my country and can't find a service center anywhere in my country. Apparently I can't find any solution online so I am out of luck. If there is anyway I can fix it, or anyone could share what should be replaced will be immensely helpful.
Need your help guys.

LineArc said:
What am I supposed to do with my set. I imported it to my country and can't find a service center anywhere in my country. Apparently I can't find any solution online so I am out of luck. If there is anyway I can fix it, or anyone could share what should be replaced will be immensely helpful.
Need your help guys.
Click to expand...
Click to collapse
Based upon above comment if the root cause is same as described i.e. connection b/w motherboard and antenna bands is broken then you can watch teardown video on YouTube for 5z by wit rigs. It shows how you can disassemble each part of the device for repair.
Apparently you will need to have some expertise and tools available to perform the task yourself. Better work with some local mobile repair workshop and explain them by showing video and above comment.

i am currently using 5z and i can says its due to updates especially from oreo to pie ( yes this problem is originated from that update). Its a software problem and they cannot solve the bug till now. There are still lots of 5Z with this issue pop up every week. The solution is to send to service centre to replace the motherboard and pray it wont happened again. This is my second time sending my phone there for the same issue. The antenna or motherboard dont simply fry or disconnect after an updates thats for sure.

Randomly changing different sim cards in the sim slots along with fiddling with the mobile data setting that comes when you insert the sim card tray worked for me, it worked for someone in zenfone forum also. Give a try and let everyone know..

Same here, after update signal lost... damn ASUS

My network signal stopped out of the blue and not after an update.
I tried changing sim cards in a lot of different combinations, but nothing worked, but the phone always found the sim cards.
I disassembled the phone, removed the antenna cable and attached it again and now the network signal is back again.

I had same problem. After the latest update, Everything working fine untill one day i restarted my mobile. Damn.. After reboot, the signal disappeared and can see 'x' at signal bar. I have rebooted many times but of no luck. Then i removed the sim tray , swapped the sims and then the signal starts showing. Initially after the update, one time I faced same issue but that got cleared after I disabled and enabled the sim in "Sim Card Information". The only issue i a, facing is the signal drops for every few minutes or hours and comes back automatically. That's what making me to replace my phone other than ASUS. Does anybody have a solution for this issue?
Update :
My phone had a sudden reboot and since then there is no network. Showing no service even if i swapped sims and re inserted. frustrated with ASUS

Refer here:
https://forum.xda-developers.com/zenfone-5z/how-to/guide-network-loss-sim-card-getting-t3946176

hamzasr said:
Refer here:
https://forum.xda-developers.com/zenfone-5z/how-to/guide-network-loss-sim-card-getting-t3946176
Click to expand...
Click to collapse
No. In my case/In most of the cases, its not the harware issue. initially i thought the same. But later found that only after updating to the latest update i faced network loss issue. sim not used to detect even after taking the sim tray out, shuffling with sims. I downgraded the firmware to previous version and then immediately i could see full network signal. So the issue is only with the latest, not with the hardware. Just give a try and confirm..
The same i have mentioned in that post also. Just give a try and update. Definitely that will work

krishna13 said:
No. In my case/In most of the cases, its not the harware issue. initially i thought the same. But later found that only after updating to the latest update i faced network loss issue. sim not used to detect even after taking the sim tray out, shuffling with sims. I downgraded the firmware to previous version and then immediately i could see full network signal. So the issue is only with the latest, not with the hardware. Just give a try and confirm..
The same i have mentioned in that post also. Just give a try and update. Definitely that will work
Click to expand...
Click to collapse
So I can do the same as you: downgrade to get fine.
But how to still updated firmware and keep the signal?

LeonardoLimaMH said:
So I can do the same as you: downgrade to get fine.
But how to still updated firmware and keep the signal?
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The only solution is to walk to the nearest service center and make the antenna fixed. I have given my phone to the authorised service center and they resolved the issue by applying glue to antenna (they told same). They charged for the diagnosis as well as for glue. They guaranteed that the issue wont repeat. But i hated the service by ASUS and planning to go for samsung or Oneplus.. My suggestion is go to service center to get it fixed

For all of you still facing the issue, the solution is extremely simple. And yes it is purely mechanical in nature just like someone mentioned too. I just wrote a post regarding this. Check it out.
https://forum.xda-developers.com/zenfone-5z/help/zenfone-5z-network-sim-solution-t3985337
It does not even require to take the phone apart.