Database Users

[Q] Samsung Note 3 N9005 NO SIM Inserted

When I upgrade my Samsung N9005 (European version) to Android 4.4, it does not detect any of my sim cards. I have tried this on three phones I have and am now sure there is a porblem with the firmware not my sim card. I am on China Unicom. I have also tried to insert a sim from a different country, it does not even ask for the pin since to it nothing is inserted. I have tried different region firmwares from HongKong, United Kingdom and Unknown. Please help.

Anyone?
How do I make my posts popular. I always ask questions on this forum and never receive answers. Yet there are 52k people online.

Be patient. You are not special that you should get immediate answers on your topics.
Thought about possible hardware failure? It could go under warranty as well.

Someguyfromhell said:
Be patient. You are not special that you should get immediate answers on your topics.
Thought about possible hardware failure? It could go under warranty as well.
Click to expand...
Click to collapse
Its not a hardware failure. I have three phones which I got after exchanging so this is six in total that have this issue. I also cannot downgrade back to 4.3 which is what I would prefer as for now.

What version of 4.4.2 you have? I need the build number.
I would recommend reflashing firmware, might eliminate those bugs.

Someguyfromhell said:
What version of 4.4.2 you have? I need the build number.
I would recommend reflashing firmware, might eliminate those bugs.
Click to expand...
Click to collapse
I have tried 4.4.2 N9005XXUEND3_N9005OXAEND1_BTU and UK firmware N9005XXUEND3-N9005OXAEND1.

Just to add some detail, my phose Baseband is unknown and when I try to check the IMEI I cannot since it interpretes it as a phone call "Mobile Network not available"

Look around the forum, there are solutions for that. Apparently something went wrong when you updated firmware.
Sent from my SM-N9005 using Tapatalk

brokesergey said:
Just to add some detail, my phose Baseband is unknown and when I try to check the IMEI I cannot since it interpretes it as a phone call "Mobile Network not available"
Click to expand...
Click to collapse
Try re-flashing the entire firmware, or extract only modem files and flash it manually. See the post here: http://forum.xda-developers.com/showpost.php?p=52948152&postcount=13

vndnguyen said:
Try re-flashing the entire firmware, or extract only modem files and flash it manually. See the post here: http://forum.xda-developers.com/showpost.php?p=52948152&postcount=13
Click to expand...
Click to collapse
I'm experiencing the same issue. Flashed a new Temasek CM11 nightly and after booting into the rom for the first time no PIN unlock dialogue appeared. The phone is stuck at "searching for service". My IMEI number is still there and both SIM cards I have tried work perfectly in my iPhone.
I'm still on JB 4.3 bootloader with CMW recovery 6.0.4.5 and baseband is N9005XXUBMI6. Is it possible something got messed up when flashing latest CM? Perhaps baseband/modem firmware outdated?
I'm downloading N9905XXUEND3 and will flash back completely to stock. Will report back here later.

AO7 said:
I'm experiencing the same issue. Flashed a new Temasek CM11 nightly and after booting into the rom for the first time no PIN unlock dialogue appeared. The phone is stuck at "searching for service". My IMEI number is still there and both SIM cards I have tried work perfectly in my iPhone.
I'm still on JB 4.3 bootloader with CMW recovery 6.0.4.5 and baseband is N9005XXUBMI6. Is it possible something got messed up when flashing latest CM? Perhaps baseband/modem firmware outdated?
I'm downloading N9905XXUEND3 and will flash back completely to stock. Will report back here later.
Click to expand...
Click to collapse
Sorry I've never tried CM so I'm not sure what happens.
Please feedback.

vndnguyen said:
Sorry I've never tried CM so I'm not sure what happens.
Please feedback.
Click to expand...
Click to collapse
I have managed to solve the problem.
1. First back up EFS and FSG in case you haven't done that yet. On the N9005 your IMEI information is stored in FSG so do not use any tools that only backup the EFS without the FSG. For tools check here: http://forum.xda-developers.com/showthread.php?t=2611903
2. Flash stock image for N9005. I was still on JB 4.3 with the unlocked bootloader so I flashed JB 4.3 again, didn't bother with KK 4.4 which will lock the bootloader after flashing.
3. Booting back into stock and the SIM PIN entry menu appeared straight away.
4. Flash CWM recovery appropriate to your bootloader 4.3 or 4.4
5. Flash CM
6. SIM PIN entry and cellular works perfectly again
conclusion:
I'm not sure why this happened. Downgrading to a previous CM build did not solve the issue. So I'm reluctant to blame CM itself. Perhaps the recovery was the culprit. Somewhere something must have been corrupted during a flash. Luckily nothing that couldn't be fixed by flashing stock.

A2017u has no cellular connectivity at all.

Just got my phone today. I downloaded the toolkit and unlocked my bootloader, rooted, have twrp, and decided to try resurrection remix. Everything seemed fine booted up with root access. Put my SIM card in and have zero cellular connection. It's not the sim because it works fine in my 7+. When you go to the settings it shows that it's reading my phone number but it says cellular radio is off. I've tried flashing the modem again and tried the latest lineage build and same thing. Any suggestions?

Who is the provider?
Have you confirmed proper radio mode is set in settings or *#*#4636#*#* ?

gpz1100 said:
Who is the provider?
Have you confirmed proper radio mode is set in settings or *#*#4636#*#* ?
Click to expand...
Click to collapse
T-Mobile is the provider. Yes I've checked the phone menu and the default setting for "cellular radio power" is off. When I toggle it nothing changes. I've just went back stock and no network either. I never put my sim in before I started rooting and stuff earlier so I'm not sure if it was like this before I got it.

Which bootstack did you install? B15 or B19? If i'm not mistaken, RR needs b15, not b19. Looking at the first few posts in the RR thread it's unclear. But, since it's based on LOS, I believe B15 is the correct one.

gpz1100 said:
Which bootstack did you install? B15 or B19? If i'm not mistaken, RR needs b15, not b19. Looking at the first few posts in the RR thread it's unclear. But, since it's based on LOS, I believe B15 is the correct one.
Click to expand...
Click to collapse
Yeah I think I may have flashed b15. But I did just flash stock with b19 like the post said to do and still no luck. Tried a friends sim too. I'm stumped lol

I'm not sure. I haven't tried RR recently.
Can you post a screen shot of what the status bar looks like?

gpz1100 said:
I'm not sure. I haven't tried RR recently.
Can you post a screen shot of what the status bar looks like?
Click to expand...
Click to collapse
Took a pic. Didn't feel like swapping sims again. Pic is of a screenshot I took earlier. When the sim isn't installed it shows a SIM card instead of the bars with no signal.
https://imgur.com/a/EaMBx

EricSchroeder87 said:
Just got my phone today. I downloaded the toolkit and unlocked my bootloader, rooted, have twrp, and decided to try resurrection remix. Everything seemed fine booted up with root access. Put my SIM card in and have zero cellular connection. It's not the sim because it works fine in my 7+. When you go to the settings it shows that it's reading my phone number but it says cellular radio is off. I've tried flashing the modem again and tried the latest lineage build and same thing. Any suggestions?
Click to expand...
Click to collapse
Flash the universal bootstack and modem for the u variant from the lineage os XDA thread. This should fix the issue.

Vurio said:
Flash the universal bootstack and modem for the u variant from the lineage os XDA thread. This should fix the issue.
Click to expand...
Click to collapse
Tried that too. Unfortunately it didn't work. Sent the phone back to amazon assuming it's a hardware issue.

[GUIDE] Regain Volte if Lost after flashing Custom ROM and Magisk

Many of you might have seen that after flashing custom ROMs and rebooting the phone with that ROM, Volte worked fine, but as soon as you flash Magisk Root and reboot again, volte is lost and further reboots doesn't seem fix it.
Working around my phone and in magisk I found a temporary solution to recover volte for calls.
***Solution***
After flashing Magisk Root, reboot your phone normally, you won't see Volte option for calls, now all you have to do is open Magisk Manager and swipe from left and look for "Magisk Hide", click on it (you'll see lots of system files), in the search bar search for 'phone services', phone services option will come up with a checkbox, click on that checkbox, your network will reset for a few second and will be back with Volte working.
I've attached some screenshots for better understanding.
**note that after every reboot you'll have to perform this procedure again n again to gain volte**
HOPE THIS HELPS Hit Thanks

Which ROM you are using right now.?
Did you flashed stock ROM.? because by flashing stock ROM IMEI shows "0", however I have recover IMEI but I won't able to get back volte.

akshu2697 said:
Which ROM you are using right now.?
Did you flashed stock ROM.? because by flashing stock ROM IMEI shows "0", however I have recover IMEI but I won't able to get back volte.
Click to expand...
Click to collapse
Earlier I was using Oreo Custom Rom (FireHound) then I went back to stock (at this moment the IMEI lost).. right now I'm using AtomicOs Oreo.
If you want to use VoLte do the steps which I posted above regarding magisk. Hope that helps.

Well, my friend, I think Volte worked for me even if I didn't follow the above steps. Maybe regaining LTE is the main part. Nice tuto by the way.
ROM: Atomic OS latest

Not working
I flashed stock with 64 bit recovery installed, which, I think, is the reason of IMEI lost. (I flashed stock to re-gain VoLte , 4g was working fine)
But soon after booting stock, IMEI went to 0 or NA in many cases.
Going back to any 8.1 ROM gets back previous imei and 3g but 4g or volte. This story is going on since past 2 months.
And, this method doesnt do anything except resetting network and finding only 3g again.

blaze_me said:
Well, my friend, I think Volte worked for me even if I didn't follow the above steps. Maybe regaining LTE is the main part. Nice tuto by the way.
ROM: Atomic OS latest
Click to expand...
Click to collapse
Yeah you are right, but sometimes for few people VoLte didn't worked..

sujay kumar said:
I flashed stock with 64 bit recovery installed, which, I think, is the reason of IMEI lost. (I flashed stock to re-gain VoLte , 4g was working fine)
But soon after booting stock, IMEI went to 0 or NA in many cases.
Going back to any 8.1 ROM gets back previous imei and 3g but 4g or volte. This story is going on since past 2 months.
And, this method doesnt do anything except resetting network and finding only 3g again.
Click to expand...
Click to collapse
Yes this method doesn't works if IMEI is lost.. I have wrote this method before IMEI lost not after the IMEI 0.
This will only work for people who still haven't lost their imei and if after flashing VoLte doesn't works.

shad.man92 said:
Yes this method doesn't works if IMEI is lost.. I have wrote this method before IMEI lost not after the IMEI 0.
This will only work for people who still haven't lost their imei and if after flashing VoLte doesn't works.
Click to expand...
Click to collapse
Anything for losers like us?

sujay kumar said:
Anything for losers like us?
Click to expand...
Click to collapse
Which ROM are you currently using?

I am currently working on HOW TO RECOVER 4G NETWORK after IMEI lost, and I can now manually search 4G network and it shows up but I can't connect to that network, it says registering on the network failed. But I'm still working on it. Will update soon.
***update***
Can't fix the 4G issue yet.

shad.man92 said:
Which ROM are you currently using?
Click to expand...
Click to collapse
Liquid remix rom, And this error is not related to any rom. All roms have this issue. Every time I test new rom(which is every week), i hope to recover my volte, atleast 4g, but no success till yet

sujay kumar said:
Liquid remix rom, And this error is not related to any rom. All roms have this issue. Every time I test new rom(which is every week), i hope to recover my volte, atleast 4g, but no success till yet
Click to expand...
Click to collapse
Did you lost your IMEI?

shad.man92 said:
Did you lost your IMEI?
Click to expand...
Click to collapse
YES

sujay kumar said:
YES
Click to expand...
Click to collapse
Then you cannot recover 4G.
You need to get your motherboard changed.

shad.man92 said:
Many of you might have seen that after flashing custom ROMs and rebooting the phone with that ROM, Volte worked fine, but as soon as you flash Magisk Root and reboot again, volte is lost and further reboots doesn't seem fix it.
Working around my phone and in magisk I found a temporary solution to recover volte for calls.
***Solution***
After flashing Magisk Root, reboot your phone normally, you won't see Volte option for calls, now all you have to do is open Magisk Manager and swipe from left and look for "Magisk Hide", click on it (you'll see lots of system files), in the search bar search for 'phone services', phone services option will come up with a checkbox, click on that checkbox, your network will reset for a few second and will be back with Volte working.
I've attached some screenshots for better understanding.
**note that after every reboot you'll have to perform this procedure again n again to gain volte**
HOPE THIS HELPS Hit Thanks
Click to expand...
Click to collapse
Any permenent fix .every boot ican do thats terrible. Now im without magisk any permanent fix please

Joyel said:
Any permenent fix .every boot ican do thats terrible. Now im without magisk any permanent fix please
Click to expand...
Click to collapse
If you want permanent voLte then flash the rom again and don't flash magisk, stay on unrooted device.

Moto G4 Plus SIMCARD No Signal

My Moto G4 Plus (XT1640) was on Stock Rom 7.0 everything working fine, so i got a OTA update, downloaded it and installed, at first it got bootloop so i forced it to power off (Power button and Volume minus) and rebooted it, but the Simcard doesnt get signal , only recognizes tells my sim number but no signal
I already tried everything, after the problems with the official 8.1 via OTA, i tried to downgrade to Stock Rom 7.0, unlocked bootloader , downgraded to 7.0 and it still doesnt get signal on Simcard and when i check the IMEI it was 0, so i installed TWRP and flashed Arrow OS 9.0 triyng to get IMEI and Simcard signal back, Clean flash i got my IMEI back but the Simcard doesnt get signal, recognizes but i cant do calls or use 4g keeps all the time "No Signal"
So i see installed "Stable Oreo 8.1 OPJ28.111-22" flashed it through TWRP and it is with the same problem no signal ... If anyone can help me pls message me or reply this, i need my phone to work!

https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068

What does your baseband report as, can you provide the full string (including the line after the .77R)?
Here's a similar thread with some possibly useful help. https://forum.xda-developers.com/moto-g4-plus/help/xt1640-service-update-to-8-1-t3926054 in particular https://forum.xda-developers.com/showpost.php?p=79437813&postcount=14

echo92 said:
What does your baseband report as, can you provide the full string (including the line after the .77R)?
Here's a similar thread with some possibly useful help. https://forum.xda-developers.com/moto-g4-plus/help/xt1640-service-update-to-8-1-t3926054 in particular https://forum.xda-developers.com/showpost.php?p=79437813&postcount=14
Click to expand...
Click to collapse
My Baseband is : M8952_70030.25.03.77R DLFT_FSG

fegama said:
My Baseband is : M8952_70030.25.03.77R DLFT_FSG
Click to expand...
Click to collapse
With that baseband, I'd try downloading the factory firmware (do not flash) and use the programutags.bat as I mentioned in the other post. See if that repairs your device.

shawgluz said:
https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068
Click to expand...
Click to collapse
My IMEI is ok
https://imgur.com/a/OosRkjG

echo92 said:
With that baseband, I'd try downloading the factory firmware (do not flash) and use the programutags.bat as I mentioned in the other post. See if that repairs your device.
Click to expand...
Click to collapse
Ill try it now if it works ill reply here!
When i opened the .bat it shows it, it doesnt show my country that is Brazil what i do ?
1 - LATAM
2 - APAC
3 - Canada
4 - US
5 - EMEA
6 - Quit
Please select Region:

https://imgur.com/a/LWmKkdl
After i use the programutags.bat i got my signal back for some seconds and lost it another time and now it shows "Only Emergency Calls" i check my IMEI and as u can see on the screenshots, ive lost my IMEI, so i think thats because i lost my IMEI using this that my SIM isnt working, i already try my Sim in another device and it is Ok. What can i do to recover my IMEI ? I have a TWRP EFS Backup that i did on Arrow Os 9.0 with IMEI fine, but with the same problem of signal ... , I tried to flash TWRP and restore this backup,it shows sucessful but my IMEI wasnt back

fegama said:
https://imgur.com/a/LWmKkdl
After i use the programutags.bat i got my signal back for some seconds and lost it another time and now it shows "Only Emergency Calls" i check my IMEI and as u can see on the screenshots, ive lost my IMEI, so i think thats because i lost my IMEI using this that my SIM isnt working, i already try my Sim in another device and it is Ok. What can i do to recover my IMEI ? I have a TWRP EFS Backup that i did on Arrow Os 9.0 with IMEI fine, but with the same problem of signal ... , I tried to flash TWRP and restore this backup,it shows sucessful but my IMEI wasnt back
Click to expand...
Click to collapse
You may have lost your baseband downgrading back to Nougat, since you mentioned you had already updated to stock Nougat.
You could either fastboot flash the Oreo firmware or try this: https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068
That script should have reprogrammed your hw partition and set the correct parameters for your radio, so I'm not sure what's happened to your baseband.

fegama said:
https://imgur.com/a/LWmKkdl
After i use the programutags.bat i got my signal back for some seconds and lost it another time and now it shows "Only Emergency Calls" i check my IMEI and as u can see on the screenshots, ive lost my IMEI, so i think thats because i lost my IMEI using this that my SIM isnt working, i already try my Sim in another device and it is Ok. What can i do to recover my IMEI ? I have a TWRP EFS Backup that i did on Arrow Os 9.0 with IMEI fine, but with the same problem of signal ... , I tried to flash TWRP and restore this backup,it shows sucessful but my IMEI wasnt back
Click to expand...
Click to collapse
https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068 i did the proceedments with the terminal app and got my IMEI and signal back, but now i want to try to use Arrow Os 9.0 if i flash it through TWRP will i lose my IMEI and Simcard signal another time ?

fegama said:
https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068 i did the proceedments with the terminal app and got my IMEI and signal back, but now i want to try to use Arrow Os 9.0 if i flash it through TWRP will i lose my IMEI and Simcard signal another time ?
Click to expand...
Click to collapse
I honestly do not know - your best bet is to backup your EFS using Lyuu's TWRP as recommended in the Arrow OS thread. At least you'll have a copy of your modemst1/modemst2 that hopefully will restore your signal. Then flash ArrowOS and the relevant GApps.
You may lose signal if you revert back to stock firmware.

echo92 said:
I honestly do not know - your best bet is to backup your EFS using Lyuu's TWRP as recommended in the Arrow OS thread. At least you'll have a copy of your modemst1/modemst2 that hopefully will restore your signal. Then flash ArrowOS and the relevant GApps.
You may lose signal if you revert back to stock firmware.
Click to expand...
Click to collapse
Thank you! I already post an update, after two days searching for solutions i finally got it, but i am on Stock ROM 7.0 with ElementalGX Kernel and root that was the requirements https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068 of this post that i used with your help too, but i dont know if this Kernel is better than the stock kernel, Im interested in flashing Arrow Os 9.0, what do u think is better i stay on the stock 7.0 or flash it ?

fegama said:
Thank you! I already post an update, after two days searching for solutions i finally got it, but i am on Stock ROM 7.0 with ElementalGX Kernel and root that was the requirements https://forum.xda-developers.com/moto-g4-plus/how-to/guide-moto-g4-plus-imei0-issue-t3859068 of this post that i used with your help too, but i dont know if this Kernel is better than the stock kernel, Im interested in flashing Arrow Os 9.0, what do u think is better i stay on the stock 7.0 or flash it ?
Click to expand...
Click to collapse
Again, it's up to you. ElementalX is a good kernel, though it really depends on what you want from your device. If you want stability, then the stock ROM and ElementalX (or flashing the stock Oreo firmware and then ElementalX/loony) are your choices. If you want more customisation, then Arrow OS or another custom ROM are your options. It really is up to you.

echo92 said:
Again, it's up to you. ElementalX is a good kernel, though it really depends on what you want from your device. If you want stability, then the stock ROM and ElementalX (or flashing the stock Oreo firmware and then ElementalX/loony) are your choices. If you want more customisation, then Arrow OS or another custom ROM are your options. It really is up to you.
Click to expand...
Click to collapse
After all this trouble i think is better i stay on the Stock 7.0 with the ElementalX Kernel, i need my phone to work, so ill stay on the stock i spent like 2 days to find the solution lol

mobile data not working, off, Apn settings are not available for this user(Solved)

I flashed a rom ( Crdroid) and the mobile data was off, sometimes it doesn't detects the SIM till re-inserting it one or more times, then when it's detected, I put it on but when I check, it's turned off, and about the Apn.. it says "Apn settings are not available for this user" thought I can Still add it with the (+), but when I add it, again I check and it disappears, nothing works
i tried to flash another rom(Corvus Os) and it's still the same, I can't neither receive calls or messages, neither call or send messages
Help

JestXII said:
I flashed a rom ( Crdroid) and the mobile data was off, sometimes it doesn't detects the SIM till re-inserting it one or more times, then when it's detected, I put it on but when I check, it's turned off, and about the Apn.. it says "Apn settings are not available for this user" thought I can Still add it with the (+), but when I add it, again I check and it disappears, nothing works
i tried to flash another rom(Corvus Os) and it's still the same, I can't neither receive calls or messages, neither call or send messages
Help
Click to expand...
Click to collapse
U flash the last firmware?
Xiaomi Firmware Updater
The ultimate script that provides firmware packages for Xiaomi devices.
xiaomifirmwareupdater.com
Or an other option is to go back to MIUI with fastboot rom and the steps to a customer rom.

i came back to miui, i Think its the latest versión, but still no getting service, thought i used OrangeFox, its necessary Pc ? i installed the lastest firmware too
but i didnt it on Pc so idk, but now its not even detecting de SIM, atleast in the custom roms it was appering

JestXII said:
i came back to miui, i Think its the latest versión, but still no getting service, thought i used OrangeFox, its necessary Pc ? i installed the lastest firmware too
but i didnt it on Pc so idk, but now its not even detecting de SIM, atleast in the custom roms it was appering
Click to expand...
Click to collapse
Test to flash with mi flash tool the fastboot rom on windows. I think to flash the fastboot rom will help.

Or first https://xiaomifirmwareupdater.com/vendor/lavender/
Or
MIUI 12.3 - 20.12.9/10
Status: RELEASED RULES WHEN POSTING 1. If a ROM is not published DONT ASK ABOUT ITS ETA 2. If a ROM is not published DONT ASK why! 3. If a ROM is available, download it and use it 4. If a ROM has bugs, post the bug to the bug section if the BUG is not already listed 5. If you use any form of...
xiaomi.eu

Good luck I've no ideas more

can u flash via MiFlash the latest MIUI ROM?
On my Galaxy S5 using LineageOS17.1 I had the same problem and I did flashed the StockROM of Galaxy S5 and I got all of the Services back like APN Settings or Mobile Data.
So try reflashing the StockROM

joke19 said:
Or first https://xiaomifirmwareupdater.com/vendor/lavender/
Or
MIUI 12.3 - 20.12.9/10
Status: RELEASED RULES WHEN POSTING 1. If a ROM is not published DONT ASK ABOUT ITS ETA 2. If a ROM is not published DONT ASK why! 3. If a ROM is available, download it and use it 4. If a ROM has bugs, post the bug to the bug section if the BUG is not already listed 5. If you use any form of...
xiaomi.eu
Click to expand...
Click to collapse
Thank you, i will try first that and in a while i will get a pc

kerem._trk said:
can u flash via MiFlash the latest MIUI ROM?
On my Galaxy S5 using LineageOS17.1 I had the same problem and I did flashed the StockROM of Galaxy S5 and I got all of the Services back like APN Settings or Mobile Data.
So try reflashing the StockROM
Click to expand...
Click to collapse
i will get a Pc in some hours, i will answer when i get it thanks for your replies

Okay I hope your problem will be fixed

okay, i'm back i clean flashed the fastboot ROM and nothing changed sadly
While in the starting this happened, it was asking me to insert SIM, it was already in but I reinserted it, and then an error appear "com.android.phone keeps failing"
If you know how can I solve this, please tell me

plus info.. if I insert the SIM 2 or more times, it reboots to the system or the recovery

JestXII said:
plus info.. if I insert the SIM 2 or more times, it reboots to the system or the recovery
Click to expand...
Click to collapse
Maybe your SIM card connector is damaged.
did you put in already a other card or put your main card into another phone.

kerem._trk said:
Maybe your SIM card connector is damaged.
did you put in already a other card or put your main card into another phone.
Click to expand...
Click to collapse
(SIM 1)

I tried another sims but still nothing, and these aren't broken or something, tho I'm seeing that Miui 12 has already the problem about non detecting SIM, Soo.. I'll try Fastboot ROM Miui 11 Android 9

Okay, i solved it, tho im a newbie, there was some videos about how to fix it, the first step is flash the stock rom / not the miui 12 one for me, it has problems with detecting chips in some telecom companies like Claro or Telcel, wich mine was Telcel, so i flashed the fastboot rom ( miui 11 android 9) , and at this point, it wasnt detecting the chip still, but somehow i could recieve calls and everything, but now being in miui 11, the 2nd step is restore de cqn file, im not gonna post it but ill give the video where i got it, but with the programs and all that, you can restore de qcn file via diag, thats all, there some videos about how to pass to miui 12 without these problems but idk, heres the videos
stock rom via fastboot
restore cqn file( no sim detected)
that was all, see ya

.