Last night I turned my phone off, and this morning it failed to boot.
The LG logo appears and then the T-Mobile splash screen, where it then freezes. The phone is stock, running Lollipop, has not been rooted. I've let it sit for over 30 minutes at a time, tried removing the SD and SIM cards, and pulling the battery. T-Mobile support recommended a cache partition wipe, but that is impossible via hardware keys on this phone.
On a side note, ADB isn't recognizing the phone. Unable to boot into recovery mode with Power + Volume Down or with ADB.
I'd greatly appreciate it if anyone has any advice, even just some pointers in the right direction. Thanks in advance!
Best answer by smplyunprdctble
adb will only see the phone at two different times:
- when your phone is completely booted (and you've authorized adb for your pc)
- when your phone is in sideload mode
on the flipside, fastboot will see your phone when your phone is at the bootloader.
If your phone doesn't work after a factory reset, that suggests something went wonky with the OS partition. T-Mobile may or may not warranty this (especially depending on age of device). If they do, you'll get a refurbished device (which, based on forum threads may or may not be better). LG may or may not warranty as well, depending on the age. They'll repair your actual device and return it.
If you have no warranty available, the official answer is "nothing can really be done." The unofficial answer is "you might be able to flash the original OS, depending on what is required to do that" -- you'd have to search other communities for that as it risks bricking your device and is NOT supported by T-Mobile (I don't even know if this device can even do it)