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[Q] Nubia Z5s, WiFi Issue, Hardware or SoftWare?

Hi!
I have posted this message on another thread, but it's important so I create a special thread for it.
Indeed I received my Z5s yesterday and I have 1 week to find out if my WIFI issue is hardware or software. In the case of hardware, I need to send back my phone to china .
I received the phone rooted, so if I want to install the last update from nubia (1.30) I have different manipulation to do. Howevver, I am afraid that if I touch the rom, the seller can tell me "you changed the rom, before it was working so it's your fault. we don't give you back the money!".
So I am waiting he allows me to put back the official rom 1.30. By the way if anybody has a good tutorial (in english) about unroot and changing ROM, I would be very grateful
There is the description of my WIFI issue:
First (yesterday) I couldn't find any WIFI and then after a factory reset, I could find some wifi but not everything. By example in my laboratory, the general WIFI of the school appears (and is working) but not the wifi of my lab... Anyway I found out than others WIFI were missing too. (Maybe 15 were alright on 20).
Now (today), in my lab, I can't even find 1 WiFi! I have tried the factory reset and it still doesn't work. In the description of the last update (1.30), I found "6. 修复wifi小概率无法打开的问题 = Small probability can not open wifi fix problems".
It looks like my problem fix except that in my case it is not a small probability but it (almost) always happen...
So I need your expert opinion, do you think it is more probably hardware issue or software issue? Does any Z5s owner have this problem (sometimes or alway)? I've bought the phone in Eternal Team on Aliexpress, I don't know what is their custom ROM, did anyone buy the phone there and know what is the ROM ?
Thanks in advance for your help!!

Wifi issue
Nobody can help me ?

Couple of questions about troubleshooting a problem/RMA

Hey ladies and gents, I have a strange issue with my N5. I am losing data connection despite having a 4-bar LTE signal. Most of the time, I will catch it at work while streaming music from Spotify/Pandora. Once in awhile i'd catch it while browsing Facebook as well. It will show a 4-bar LTE connection, but the apps will report "no data connection available." I've tried surfing Chrome when this problem arises and it says "You are Offline." I found a temporary fix - turning Airplane mode on/off or restarting the phone.
Has anyone ever heard of this, and does anyone have any suggestions. I was running SlimKat before, but now i'm on stock 4.4.4 with ElementalX kernel, with the issue crossing multiple ROMs/wipes.
I also just got off of chat with Google support. The lady is emailing me some troubleshooting steps, and wants me to contact T-Mobile as well. If the problem is still there, she wants me to RMA. What are the steps needed in order to do so. Some quick searches brought up factory images but I haven't found anything recent, and want to make sure I have all my bases covered.
Thanks guys!

Google doesn't care whether the bootloader is unlocked or whether the phone is rooted. If it's a hardware issue, you are covered!
If you want to return to stock before sending it in for peace of mind then follow this thread: http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701

Sorry for the late reply, been pretty busy the last couple of days. Glad to hear that Google doesn't care about the unlocked bootloader! I'll probably just return completely to stock and return it like that IF I have to.
However, I think I may have fixed the problem. I altered my APN settings and changed IPv6 to IPv4 and it seems to have fixed my problem, at least for now (the problem is random so i'll have to use it for awhile to make sure it really is fixed). Anyone else ever heard of this problem, or this fix, especially on T-Mobile?

[Completed] [Q] Wifi goes off after unlocking device

Hi,
Since a few days, I'm having a strange wifi issue on my Xperia SP (Android 4.3 from Sony).
When I switch on my mobile phone screen, the wifi start, I can see the icon. When I unlock my phone, a few seconds after, the wifi goes off.
I have to manually switch off and on wifi if I want to use it.
I have posted a video explaining what I see, but I'm new to xda, so I can't post the link.
youtu.be/B6mnKKjOnoE
I have done a soft reset, remove many unused apps, and delete some app stored data.
How can I find which application is accessing wifi in order to solve this issue?
Maybe someone had any idea to help me.
Thanks guys.
Edit: Things went back to normal, I haven't done anything more to solve this issue. Probably some magics... Please close this question. Thanks

Thread closed.

Internet is very slower, pls help

Hi guys, i have really annoying internet problems. For some reason a week ago my wi fi connection got very bad, and its just on my phone. On other devices in house wifi is fine, but in my case there`s a problem. Maybe problem is new update for nougat, i dont know, maybe something else. At first i tried with deleting cache memory and deleting some apps, but that didnt work. Then i checked other devices in my house and they arent lagging.
I hope u will help me, because i bought this phone a month ago and im losing my faith in him.

Problably a simple software issue, like a wrong dns, delete(forget) the wifi from your phone and reconect to it without any manual settings.

vidra said:
Problably a simple software issue, like a wrong dns, delete(forget) the wifi from your phone and reconect to it without any manual settings.
Click to expand...
Click to collapse
naah, that didnt help

Then just try factory reset

Blame Ajait Pai.

Zippoza said:
Hi guys, i have really annoying internet problems. For some reason a week ago my wi fi connection got very bad, and its just on my phone. On other devices in house wifi is fine, but in my case there`s a problem. Maybe problem is new update for nougat, i dont know, maybe something else. At first i tried with deleting cache memory and deleting some apps, but that didnt work. Then i checked other devices in my house and they arent lagging.
I hope u will help me, because i bought this phone a month ago and im losing my faith in him.
Click to expand...
Click to collapse
I had slow WiFi too, in my case somehow it's caused by the Bluetooth. Whenever it's on, my WiFi slows down from 30 mbps to 1

Have encountered the same problem and only thing I tested, is disabling the Bluetooth or going to Direct Wifi changing the Name and trying a Speedtest then .. All is OK But if you enable/disable Bluetooth again it stops working correctly.
It doesn't work anymore since B402.. And no solving solution found in this last update from Huawei.

Same problem here! since B402 update my wifi gets stuck at 0.5 Mbps if i have bluetooth turned ON. As soon as i turn bluetooth OFF my wifi works great!

Just updated manually with formware finder to version C432B404 and problem fixed!! Attention, it will update 2 version of the firmware: first a B404 normal, and then i get a new B404 (programmer) . Just updated both ad now everything works fine regarding internet speed with bluetooth on.

Had the same problem and it was the google home app for me. Uninstalled it and problem went away. Hope this helps for someone.

Networks disconnect with work profiles :@

Hi all,
I have searched for any past references to this issue quite a bit but found nothing in here so thought I would ask. Maybe my searching skills are not good
Whenever an app that requires aGPS starts, both my sims and my wifi disconnect and reconnect in a continuous loop. This has started happening since I factory reset my phone and then installed my company's work profile in the summer. I had a look on the OnePlus forums and it's a known issue since the beginning of the year but OP have done nothing about it. I need my work profile because of course I work a lot from my phone and even though a recommended fix is to switch off location services so that this doesn't happen, location for me is a very important function on my phone.
Does anybody know of any solution to this that I couldn't find? Am I going to have to go the route of a custom ROM to address this? I haven't had a phone with a custom ROM since my XDA IIs so really don't want to do this
Thank you in advance!

nobody? . . .