Xiaomi Mi 8 - No WiFi, no GPS, but LTE works - Xiaomi Mi 8 Questions & Answers

Hello,
Sharing my problem by order of events:
Phone falls, screen cracks, LCD doesn't work
Sent to shop for repair
Brought the phone home, but noticed phones WiFi didn't work. Restored didn't work.
Decided to clean and flash phone (used miflash, running clean all script as seen here on the forum) after unlocking the device. Didn't work either.
Tried muktiple ROMs. Same thing. WiFi and GPS don't work. Only LTE.
Any ideas? Is this really a hardware issue? If so, how could it be solved?
Thanks

Dankex said:
Hello,
Sharing my problem by order of events:
Phone falls, screen cracks, LCD doesn't work
Sent to shop for repair
Brought the phone home, but noticed phones WiFi didn't work. Restored didn't work.
Decided to clean and flash phone (used miflash, running clean all script as seen here on the forum) after unlocking the device. Didn't work either.
Tried muktiple ROMs. Same thing. WiFi and GPS don't work. Only LTE.
Any ideas? Is this really a hardware issue? If so, how could it be solved?
Thanks
Click to expand...
Click to collapse
I also changed the battery. After battery change my wifi and gps are not working.

I think the antenna connections are not in contact with the motherboard after the repair.
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Related

[Q] Problems with my unlocked Bell HD7 (t9295) on AT&T

If you don't already know, the unlocked Bell HD7's 3G bands are the needed bands required for AT&T (850,1900). I received my unlocked Bell HD7 from Negri Electronics today and I was super excited to get it going on AT&T here in The States but ran into a very weird problem...
Basically, I can't connect to 3G/HSDPA/EDGE internet. Now, the weird thing is that it SHOWS I'm using AT&T and that indeed I am on HSDPA (see pics below). Calling and messaging work fine BTW. If I want to do anything requiring data, the 3G/HSDPA/EDGE connection won't work and I'm forced to use wifi.
I'm tired of hard-reseting and flipping switches on and off... I just hard-reset the bastard one last time and now I wait for your advise. What do I do? Thanks in advance
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Since it runs on the Bell firmware you must enable the data roaming. In the first pic that you posted it looks like you have it off. Give it a try and report.
Sent from my MB860 using XDA Premium App
can you post the "More Info" result ???
try downloading "connection setup" from the marketplace in the htc apps section, run it and you should be good to go.
B"H
Seems silly, but did you actually setup your APNs?
Not sure I saw that in the pics.
Good Luck,
Dovid

[Q] Sprint Public IP and LTE issues

Does anybody use the Sprint Public IP add-on for their plan? I turned this on to use tethering for PS/Xbox, but when I try using any custom ROMs, LTE does not work. I get signal for voice with the exclamation point, but then drops to 3g. Stock works perfectly fine, but no custom is working for me.
Edit, just additional info, I've tried http://forum.xda-developers.com/showpost.php?p=51308741&postcount=276 and I've tried the sprint fix zip. I also tried restore stock backup, get data and restore custom. None work except stock based.
I know this is an old thread so I'm sorry for resurrecting it but I'm on a nexus 6 with stock software (except root) on nougat. It's 2017 and I'm having this exact same issue and I've been through multiple tiers of support with Sprint and they can't figure it out. I'm hoping someone knows a fix to this. This is the only thread I could find that has my exact same issue.
Was about to start a thread about this issue, instead I'll just resurrect this one.
I have been trying to figure this out for months now. The only think that may point to the cause I could find is in the modem packets to and from the tower. Soon as you apply Static IP the tower rejects it saying your not subscribed to this option, thus denying LTE/3G attachment with the tower. Here is a screenshot of the packet, I have gotten so far as to have an official ticket opened with sprint, and emailing countless photos to them to help them diagnose it, they do not seem to have any idea whats going on.
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Nexus 6 after installing new digitizer

I have recently installed a new lcd screen and digitizer on my N6.
Yes. the phone operated just fine for about 2 years before I needed to do the maintenance...
It reboots and operates just fine on WIFI.
When I reboot with a valid SIM, I instantly get connected and registered on the network, and it functions correctly for about 30 seconds.. then drops out/off the network.
When I am rather near a tower it functions correctly too.
So, I am wondering if I somehow bent, or am causing the antennas to not reconnect to the main board fully... I have been looking around for where the GSM antenna(s) are. Google searches and forum searches simply reveal the NFC and quick charging loop under the cover.
Does anyone have an image of the mainboard and it's connectors to the antennas? I have found images of the main components on the board, but none of the GSM part.
Any help in locating/trouble shooting this one would be greatly appreciated.
TIA
http://www.droidforums.net/threads/nexus-6-first-full-day.279389/#post-2595612
Also:
https://www.ifixit.com/Teardown/Nexus+6+Teardown/32877
Thank you for replying....
Oh, btw mine is the XT1103 model.
I followed both of those links prior to posting this.
Yes, the teardown at ifixit was the one I followed. It had a mere mention of the antenna.
The antenna reference diagram doesn't seem to match. I guess it might when the item is inverted.
Here is what I am seeing. Could the wwan antenna actually be the one on the top?
(looking from front)(top is to the left to save space)
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(looking from rear)

Locked phone into "Flashed with unauthorized software" state, IMEI at 0

To make a long story short, a relative bought a phone off ebay that was in Retail/Demo mode and I was tasked with trying to get it out of that state by flashing a different stock ROM onto it. I used to have absolutely no issue before with older phones, but, after a few softboots with no success, I've eventually ended up reaching this far in nuking the phone, and even the IMEI in download mode is showing a 0 (though I'm not sure if that wasn't always like that).
From what I've seen the phone is certainly the Snapdragon variant, and yet there was no way to activate OEM unlocking within the phone. I know this situation is rather insane and I could be SOL but here's to hoping someone could point me in a direction to help fix this thing. I haven't tried flashing the unofficial TWRP in fear that it's going to screw over my recovery (in which I forgot to mention it works perfectly fine at the moment). Alongside with the security error, I have the secure check fail with modem displaying as well. Is there a certain ROM version that might help? I've attached a screenshot that I took right before I fell into the abyss, so hopefully that'll help (unless you can't see it out of me being new). Thanks for any replies in advance.
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It's a brick without an imei number
Sent from my SM-N960F using Tapatalk
Contact seller, we don't discussion this here
Thread closed!

Samsung SM-N950F/DS sensors stopped after update.

Hello everyone. I'm sure many people are having problems with their Note8s specially after receiving updates. Mine also did broke at some point where I lost the track. What I have done to try to fix it so far is;
Went into download mode - had this ;
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I think the phone is in Egypt variant since it says carrier ID is Egypt?
For the Recovery mode I had these;
So as you see, I tried many things to fix this without sending it to SC since I live in North Cyprus. I'm pretty sure that it is not hardware related but more likely a software stuff. Any ideas to fix this? Thanks.
Btw, I am not sure if the images are visible or not, can someone leave me a feedback please?
tMrz said:
Btw, I am not sure if the images are visible or not, can someone leave me a feedback please?
Click to expand...
Click to collapse
Images are not visible
zzThrain said:
Images are not visible
Click to expand...
Click to collapse
They should be fixed now, thanks for the feedback
i got the problem too
No one has any idea about how to fix this instead of sending phone to Samsung Care? Like draining the battery completely etc? Or possible software conflicts? Since I have updated to bootlader 6, I cannot go back to 5 either.

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