yashsingh1/xdaforums huggingface dataset:
[HTC U11  Questions & Answers] Nejums:
Sorry guys. HTC were really slack at getting back to me, and unfortunately they want me to send the phone in to get it inspected. I know it's out of warranty and since my wife is well and truly into her Huawei P30, this phone is unfortunately going to just have to remain this way. Sorry for not having any better info.
[HTC U11  Questions & Answers] sam@xda29:
The same issue I am facing now. No SIM CARD Detected and WiFi isn't connecting.

What things I have tried doing so far?

1.) Factory Reset - 3 times.

2.) TWRP Based RUU Restores ( 2 possible versions tried )

3.) Tried Restoring zip based restore

4.) Did a Full Internal + External SD Card Wipe and then flashed RUU.

5.) Restored stock ROM.

Nothing is working at all.

Now, Trying to do S-OFF but as the phone itself is not booting into a normal OS, I cannot install Sunshine app and proceed. Help needed, at least in getting the OS to work.

Thank You.
[HTC U11  Questions & Answers] DtwoK376:
It seems there's no way without replacing hardware to fix it. But if we don't know what causes this error we cannot proceed.

I tried the same things as you did. Also unlocked bootloader. My device is starting but I cannot proceed to the main menue cause of no internet connection. I'd love to try a custom rom. That's the only thing missing.

Also if the phone is rooted there are WIFI Error fixing apps and check.

I have bought myself a OnePlus 7T pro MClaren edition and I'm really happy with it. But also I don't want to accept that the htc just died from nothing. :D
[HTC U11  Questions & Answers] grmo:
Same issue here, happend a few months ago and after a week the phone started working. Now again no SIM detected and wifi won't connect.
[HTC U11  Questions & Answers] abhi2301:
Same issue with my HTC U11 also

It started two days back, tried multiple factory reset but no use. For me this happened while travelling in my car, it was working 15 mins back, was able to attend couple of calls but later it just got into this condition.:(
[HTC U11  Questions & Answers] DtwoK376:
So we are getting more and more with the same issue. That's crazy.
[HTC U11  Questions & Answers] DrOtt:
Same issue but phone also crashed

What the hell? My U11 JUST started acting up yesterday.

All of a sudden no 4G signal, no wifi, and today it got so worse that the phone crashed itself and turned off.
[HTC U11  Questions & Answers] DrOtt:
Just a small update. Figured it's a heat problem, and the phone is choosing to disable wireless connections without warning and/or shut itself off. Happens when I fast charge, play games, or even just bring it into a hot room. It also seems to heat up slightly even when just browsing the web for a while, and then just locks the sim card out of nowhere.

I have changed the screen and battery two months ago, but even then it wasn't that sensitive to heat. I'm sending it to a repair shop again to see what's what.
[HTC U11  Questions & Answers] apek862002:
Same happened to my u11 Dual sim today. Lost both sim cards and wifi connection. It occured few minutes after updating to Magisk Manager 8.0.0, but I don't think if this is the reason. I'll try to do some things and if it will help I'll post it here, but if no then it will not be funny at all. When I think about factory reset and after that installing and doing settings...fcuk what a waste of time...
[HTC U11  Questions & Answers] DtwoK376:
That's an really interesting point. Maybe we damaged the temperature sensor by replacing the screen? I do not even know where it is set?

But to test your idea I'll put my phone in the fridge for a while and start it there. If it works there the heat-limit could be the reason. Then we should figure out where it is set on the platine. Thanks for sharing!

I'll reply after the fridge test.
[HTC U11  Questions & Answers] DrOtt:
Putting it under a fan works for me.

Assume that the motherboard is working properly, the faulty part would be the battery and its temp sensor going kaput. The sensors multitool app shows battery temp 32 Celcius at idle, room temp is around 27ish, looks normal to me? But if the screen replacement compromised its water resistance, and water got in somehow, then we have a bigger problem. I fear its the latter and this phone is on its way to the graveyard. Repair shop also says its likely a mobo issue. On one occasion, I took multiple photos using GCam and it black screened then shut itself off, didn't even have the chance to get hot.

F
[HTC U11  Questions & Answers] DtwoK376:
I don't think so. I had the issues before replacing the screen. But I was in the hope that maybe if I reconnect the battery it would fix it. I could give a new battery a try. It could really be that part. I think since mobile phones exist the first thing that got damaged was always the battery.
[HTC U11  Questions & Answers] apek862002:
My phone is stock inside and I never replace any part of it. It's true that yesterday when I was browsing Internet phone got little warm but it was hours before then this issue occurred.
[HTC U11  Questions & Answers] DtwoK376:
Mhm... That refutes our theroy... But I'll try though. I've already ordered a new battery. There are some improved batterys on the market. So i ordered a 5300mAh one. But it takes about a month for delivery I think. Meanwhile I'll place the phone in the fridge as said before and will test this method.
[HTC U11  Questions & Answers] apek862002:
I have DevCheck installed on my phone so I can read temperature. Battery is in good condition, when fully charge and plugged into dc it's 32C. I'm preparing to install RUU. If this won't happened then I'll stick with my Alcatel 1s 2019 for replacement for longer period than few days;).

After installing RUU problem is not solved. "com.android.phone is not responding". So now I cannot install anything without wifi. So after almost 3 years phone is useless.

Baseband is still unknown. And I think this is the issue here. But how we can repair that I don't know for now.
[HTC U11  Questions & Answers] DrOtt:
So I installed a CPU temp sensor app and monitored it while playing a game. Once at 50c the wifi and 4G signal just cut off, the back of the phone isn't even warm yet. Exit the game and let it rest a bit and signal came back like nothing ever happened.

Looks like normal Android procedure, but the weird thing is it wasn't that sensitive before, and quick charging never caused an issue until now. So wtf?
[HTC U11  Questions & Answers] apek862002:
Here is tutorial how to restore baseband: https://www.androidbrick.com/ultima...agon-xiaomi-mi5-imei-and-baseband-repair-fix/

I'll try it later.
[HTC U11  Questions & Answers] izumisano:
My U11 also suddenly hit this issue yesterday afternoon while the phone was just lying on the table. One minute it was working just fine (I was on my laptop chatting via whatsapp web linked to the phone), next minute both SIM card not detected, wifi cannot turn on, IMEI & baseband gone. If I tried to enter Mobile Data option in setting, a popup com.android.phone ANR appeared. Tried everything except Factory Reset but no use. What did actually happened?? The phone wasn't even overheated or fell down. It was almost 3 years (purchased on Dec 2017) but so far never got any problem, not even lagging, there's not even a crack in the body.... Very2 frustrating :(

Please share any updates on the issue.. in the meantime I shall backup everything first and tried the factory reset sometime tonight. Thanks in advance!
[HTC U11  Questions & Answers] DtwoK376:
This is also interesting. I'll check my baseband. I don't know if it's also gone. But goodthing we have a guide to restore it. But I think its the battery. It's more than just a battery as I learned already.

So it has heatmanagement system and stuff like that. I hope that my ordered one comes faster than prognosticated.
[HTC U11  Questions & Answers] apek862002:
Don't do factory reset if baseband is gone. I did it and it won't help. I'll give feedback if baseband restore will help. If yes, then it's good to go, if no then...

My phone is also almost 3 years old (November 2017).
[HTC U11  Questions & Answers] izumisano:
Thanks a lot for saving me from major headache of factory reset! Looking forward on the baseband restore outcome.

Luckily managed to revive my old M7 to put the sim cards on, so both my sim cards are working just fine.

When I retrieved my U11 box, I remembered the phone died just a month after purchase and I sent for warranty repair on Jan 2018. They changed the motherboard and in the service note it was written that IMEI 1 number was changed as well, however the note didn't mention anything about IMEI 2. Is there anyway to check what was the IMEI of the phone before the error happened?

edit: found out that IMEI 2 = IMEI 1 + 8 (i think). And when I run bootloader in download mode, I can still see the device barcode & IMEI 1 correctly. Will try to perform IMEI & Baseband restore this weekend and hope it can revive the phone. Anyone has the QCN backup for HTC U11 to share?
[HTC U11  Questions & Answers] apek862002:
Now I stuck on...first step. I don't know yet how to enable diagnostic port. I know how in theory but in practice I have problems with SU. I know what to do to not to have "permission denied" in ADB, but now I need to install matching adb version. After that maybe I'll run diagnostic port finally.
[HTC U11  Questions & Answers] DrOtt:
RIP

Welp, not the update I'd like to give, and certainly not the outcome I would prefer, but my WiFi and mobile signal is not coming back regardless of CPU and battery temp.

IMEI and baseband is still there so that's not the problem.

Rest of the phone is operable, but without the internet, Android is basically useless.

So, any apps I can use to transfer data to another Android via USB only? :(
[HTC U11  Questions & Answers] izumisano:
I'm using this tool "gnirehtet" to reverse thether internet connection from my PC to the phone via USB cable. This way we can make file backup to PC, and cloud backup on the apps directly from the phone. For cloud backup I just use the good old Helium app.

Gnirehtet guide: https://www.youtube.com/watch?v=EHooYfSWvkI
[HTC U11  Questions & Answers] aberean:
Thought I'd chime in on this also! I have a similar issue, I have wifi signal but it will not connect to AP, I dont know if I have sim issue since i have only used as wifi for a while. My u11 is physically unmodified, i have only installed twrp w/o root.
[HTC U11  Questions & Answers] DrOtt:
THANK YOU! You are a life saver my dude!
[HTC U11  Questions & Answers] apek862002:
So after many things which I've done I recover baseband and IMEI numbers from 0. But now I stuck on WiFi issue (MAC 20 00 00 00 or something like this - it means it won't work). Also my sim is recognized by phone (it can tell me when I'm taking it from phone and when I insert it again) but there is no any connection to provider. For some time it was only H+ w/o LTE. So I think that maybe it's hardware issue with antennas. Later I'll try to open my phone and see how it looks like inside for the first time. When I'll figure it out and where is the problem I'll write about it.
[HTC U11  Questions & Answers] hammered58:
you can add me to the list of no wifi and a mac address of 2.00,00.00. just happened today. tried ruu reset, factory reset, nothing, and my usb connection to my computer quit also, double whammy. if for some reason i get it going i will update
[HTC U11  Questions & Answers] apek862002:
I tried to change MAC address of WiFi but with no success (editing wlan_mac.bin, changing configuration file, putting WCNSS_qcom_wlan_factory_nv.bin to folder). Because I have no LTE (previously I had VoLTE on and now I put whole customize folder from backup), signal drops to 2G, 3G, and H+, second SIM card is visible but no connection I think that it might be hardware problem. I don't want to open phone 'cause as JerryRigsEverything showed, it will be hard to close it again and it'll lost waterproof but what else I can do. And I don't like to spend a lot of money to buy new phone.
[HTC U11  Questions & Answers] izumisano:
Looks like many got expired hardware at same timeframe :(

Really can't believe this, my 7 year old M7 is still running even with half dead battery and slow response due to obsolete android version. I expected U11 to have better hardware and durability :mad: My U11 battery is still running, though not as strong as brand new (of course). I just need to recharge once at around 4PM for normal use. But now it's a potato.

Do you mind sharing the steps you did to restore IMEI and Baseband please?

Also can show me where to find a backup of U11 QCN file?

Thanks in advance!
[HTC U11  Questions & Answers] apek862002:
Hey,

so first I wanna tell that after opening my phone (hairdryer is pretty handy in this operation) everything seems fine. I learned that my battery is from 16th of September of 2017. Everything is in place plugged as it should be etc. So this step did nothing to my phone except that now it will be easier for dust to go inside the phone.

Second, my steps:

First: you must download and install programs and drivers that are specified here: https://www.androidbrick.com/ultima...agon-xiaomi-mi5-imei-and-baseband-repair-fix/ . Commands you should type in adb are here: https://tutorial.angle360.tech/2020/03/htc-u11-imei-repair-instruction/

Second: because I had mismatch in adb versions I downgraded it by android studio to Oreo. Remember to use powershell (or cmd) with administrator privilege and run it from adb path.

Third: when you use Magisk remember to set su privilege to shell in your phone otherwise you will get "permission denied" in adb on pc.

Fourth: Because I had error 52 in qualcomm diagnostic (901D if I remember) in device manager (driver signature verification fail by Windows) I was forced to run Windows in advanced reboot where you can disable signature verification for drivers (when you click on restart windows you should press and hold shift button and go to advanced and find this option; you should click on that, Windows will reboot then you must choose option 7 and you're good to go)

Fifth: When your phone is in diagnostic mode run WriteIMEI and type your IMEI numbers. When you'll see "pass" then it pass.

Maybe it is wrong but I made qcn from my phone after I used WriteIMEI and I checked in HEX that IMEI are right. In phone after reboot my IMEI numbers and baseband are present. But it took me four evenings to do it and still my phone is fcked up. I can't use WiFi (still MAC 02:00:00:00:00) , first SIM working max. at H+ but many times it's off, second sim isn't working.

I thought that HTC U11 is really good phone and I could use it 'till the battery will be unusable but now I have still working but w/o calling and Internet phone. So it's pretty nice looking camera:).

I hope that someone will tell how to fix the WiFi problem because for now I'm tired to find the good one.
[HTC U11  Questions & Answers] Nejums:
Really appreciate all the efforts which have been made by everybody in trying to fix the issue. This seems like quite a significant flaw, and if it has happened to this many people on XDA, imagine how many more there are out in the wild. This expiration seems awfully suspicious though and I wonder if it'll be worth sending the phone to HTC for them to diagnose.
[HTC U11  Questions & Answers] hammered58:
Just a guick update,, iwas able to get my wifi back by allowing my phone to take ota updates via my data ( that part still worked) and once it updated to pie happy days my wifi came back.. sadly my usb connection to my computer is still whacked it says device not reconized... So i dont know if my problem was the same as i still had a working sim..

And i was rooted, with oreo fw and on lineage 16 at the time that my wifi went haywire..
[HTC U11  Questions & Answers] apek862002:
I had newest Android 9 (Pie) with latest security updates from June 2019 (probably) (for HTC u11). So for me no new updates. About device not recognize - try to reinstall drivers.
[HTC U11  Questions & Answers] hammered58:
just letting u know u were spot on on the driver reinstall,, something went south on my pc an it took multiple drive installs befor i was finally able to see my u11 in download and bootloader mode.. Thanks
[HTC U11  Questions & Answers] apek862002:
Downgrade from Pie to Oreo isn't helpful. IMEI is erased. I don't give a damn with this phone.
[HTC U11  Questions & Answers] drizz831:
have any solutions been found yet? this exact same thing started happening to me as well 3 days ago. service has came back randomly a couple times but as soon as phone restarts itself it does it again. took it to the sprint store today. they gave me a new sprint sim card and that didnt help. my screen is cracked but its been working fine like that for months. they told me to do an insurance claim or upgrade devices
[HTC U11  Questions & Answers] apek862002:
I "found" the solution - I bought Oneplus 8 pro and I'm selling HTC u11. Maybe someone will buy it for parts replacement 'cause everything is in very good condition "only" wifi isn't working and sim 2. Sim 1 is working for time to time.
[HTC U11  Questions & Answers] DtwoK376:
Quick information:

I bought a new battery and replaced the old one. "No Wifi" Issue still exists and I don't come further the Facility, because my phone is google account locked. :D
[HTC U11  Questions & Answers] DtwoK376:
Solution

Yeah the first one who solved it. Can you maybe share the files u used for it? I think it maybe could work for all of us. Thanks for sharing!
[HTC U11  Questions & Answers] apek862002:
I downgraded from Pie to Oreo and it wiped my both IMEI numbers. So can you write what version of twrp you used and what if I never used custom ROM and do not have a backup?
[HTC U11  Questions & Answers] mario182005:
So I used twrp-3.4.0.0, and i would just grab the latest lineage 17.1 that golv made and see if that works
[HTC U11  Questions & Answers] apek862002:
After installing twrp and lineage 17.1 still no IMEI is present, no baseband and WIFI not working. I'll set up my IMEI numbers again but Wi-Fi still will be off.
[HTC U11  Questions & Answers] metropical:
mee too. dammit!

*#*#4636#*#* gets me this in wifi

.

I've tried factory reset, TWRP b.u.

Doesn't seem to be running hot.

Uninstalled Magisk, no change.
[HTC U11  Questions & Answers] metropical:
tried this:

https://xdaforums.com/t/no-wifi-signal-no-sim-signal-help-please.4047825/#post-83904205

Essentially flashing hosd_signed.img.

now I can get this far under WiFi, but still no WiFi.
[HTC U11  Questions & Answers] metropical:
just tried flashing the OEM RUU for Oreo. Still no WiFi.

And now requires power/vol down to restart. PITFA!

Guess next try is Pie OTA.
[HTC U11  Questions & Answers] hammered58:
Did the pie ota fix your issue? Thats what fixes mine. Now when ever I downgrade to oreo from pie my wifi is gone, but taking the pie ota wifi returns, this is the second u11 that I own that this has happened to . Something is breaking the wifi,
[HTC U11  Questions & Answers] Tdg2002:
On oem latest pie software anything works
[HTC U11  Questions & Answers] metropical:
up'd to Pie. WiFi and other seems so far, OK. But telling me my WiFi signal is "poor". Which it is not. Toggled. Restarted. N/C.

Sees all my neighbors WiFi with good signal. WtF?

Had to change router pw to "WPA/WPA2 mixed mode". So far good. Even got WiFi Calling back.

I liked Oreo better last time. Perhaps I was just hallucinating. Time will tell.
[HTC U11  Questions & Answers] EmircanY:
Hey guys, my HTC U11's wifi and data connection suddenly stopped working. I'm not that good with phones, is there any solution for this? If so, is there a tutorial for this?
[HTC U11  Questions & Answers] metropical:
which OS? Pie? Oreo?

which phone version?

US carrier? US unlocked? foreign?

unlocked bootloader? rooted? stock?
[HTC U11  Questions & Answers] EmircanY:
android 9.0, foreign (dutch), the rest i dont really know
[HTC U11  Questions & Answers] metropical:
1st suggestion is to back up everything you need on the "ext" mSD card.

I'd bet your stock and locked.

You could try booting to safe mode.

HTC U11 - Guide Downloads - HTC SUPPORT | HTC European Union

www.htc.com

Others in your territory may have some other thoughts.

But I'd personally factory reset AFTER backing up everything possible to the mSD.
[HTC U11  Questions & Answers] EmircanY:
I did the factory reset but it still wont work.. :(
[HTC U11  Questions & Answers] hammered58:
the next option I would try is find a ruu zip file that matches your phone and try resetting that way. If you need help with that just ask and we can help
[HTC U11  Questions & Answers] EmircanY:
Hi, how can I do that? And where can I find the a matching zip file?
[HTC U11  Questions & Answers] hammered58:
If you could go into your settings _ about_software information -software number , let us now what that number is . it will look something like this 2.42.617.1
[HTC U11  Questions & Answers] EmircanY:
the number is 3.31.401.1
[HTC U11  Questions & Answers] hammered58:
do you have the dual sim or single
[HTC U11  Questions & Answers] EmircanY:
i have the dual sim version
[HTC U11  Questions & Answers] hammered58:
I found this on android file host, https://androidfilehost.com/?fid=1899786940962610751

It looks like it should work for your firmware version. double check by going into your download mode and check the os- make sure it matches what u gave me also double check that my link matches your version

to install the ruu, download it,, then rename to 2PZCIMG.ZIP ,, then place it on the root of your sd card,, boot in to download mode then just follow the phone prompts, if it comes up with a error just make a note and post back.

there are more detailed ways of doing this as in the 2 links below but Iam going by what u gave me ,, if you want to double check your mid/cid version then you will have to follow the instructions below. If anyone else has a better idea please let us know. Trying the best I know how without giving bad info. hth

https://www.thecustomdroid.com/how-to-restore-htc-u11-stock-firmware/

https://www.thecustomdroid.com/install-adb-windows-linux-macos/
[HTC U11  Questions & Answers] hammered58:
one more thing double check your phones radio version matches what the link version is
[HTC U11  Questions & Answers] EmircanY:
Where do I find that?
[HTC U11  Questions & Answers] hammered58:
boot to download mode and it will list radio there
[HTC U11  Questions & Answers] EmircanY:
As soon as I press boot into download mode, i see a screen saying ''your device is corrupt. I tcant be trusted and moy not work properly etc. (however this screen I was receiving the last 2/3 months so nothing new). After I press the power key, it goes back to bootloader.

I have downloaded the file and put it on the SD via my phone like this:

Is this correct or?
[HTC U11  Questions & Answers] hammered58:
looks good to me
[HTC U11  Questions & Answers] EmircanY:
How can I fix it? As it wont continue if I press reboot to download mode, it justs go back to the bootloader after the device is corrupt screen
[HTC U11  Questions & Answers] hammered58:
at the first download mode screen it should want to boot from the zip file and u press the volume up button to boot to the zip file ,, it should say sd mounted then list the zip file then give you options to start flash
[HTC U11  Questions & Answers] hammered58:
i found this

https://xdaforums.com/t/fix-htc-u11-corrupt-relocked-s-on.3855157/