[LG V10 General] cproaudio:
I have 2 LG V10s. Let’s call them His and Hers. Both are manufactured Oct. 2015 and bought on Swappa in Jan 2016. His was bought from original owner. Hers was bought from second owner who also bought it from Swappa. Both are genuine T-Mobile not LG promos so both IMEIs are in T-Mobile’s database. Both permanently unlocked with T-Mobile unlock app right after purchase. Both are bootloader unlocked, rooted, TWRP installed running debloated stock MM ROM but that doesn’t matter as you’ll see later.

His V10 shown first signs of bootloop around May 2017 when the phone would randomly lose SIM card and reboots itself. At first it was about once a week then once a day then to 2-3 times a day. At mid June 2017, permanent bootloop. Placed in storage closet ever since.

Her V10 was working perfectly til October 2017. The phone shuts off by itself and stuck in permanent bootloop. She tried reviving the phone by freezing it for 30 minutes several times. Each time the phone would boot to home screen then shuts off. She decided to leave it in the freezer overnight. The next day, the phone’s completely dead; no vibrate, no LG logo, not even charging works. I guess the condensation really killed the phone.

No repair shop in town would touch either V10. On Nov. 14th, (2 years after original purchase and 1 year after warranty expired) he send her V10 to LG repair ship as a test run. If it cost less than $100, he’ll pay. If it cost over $100, he’ll pay the diagnostic fees and have the phone ship back. He entered “stuck in bootloop and now the phone won’t boot at all” as reason and attached a screenshot of the Swappa buyer page as sales receipt. The Swappa buyer page has no IMEI info, only buyer info, price and date and a stock picture of the V10. A print out of the same page was included in the package as receipt. LG received the phone on Nov 20th, REPAIRED IT AT NO COST!!! then sent it back out.

I received her V10 back from LG. It’s the same phone as the one I sent out so they didn’t replace the whole phone. LG replaced the motherboard and reprogramed the new board with original IMEI. The repair slip states that the phone is not charging as reason and replace board as the repair.

I turn on the phone and “erase” quickly flashed on the screen and the phone blacked out again then proceed to reboot the phone. After quickly setting up the phone I removed the battery and inserted my AT&T SIM card and rebooted the phone. The drop down notification showed “network locked” I figured since I paid to have the phone unlocked last year and the new board has the same IMEI as the old board, T-Mobile should have kept the IMEI eligible for unlock. I fired up the unlock app and proceeded to permanently unlock the phone. To my surprise it failed. Then I read the rest of the message and it says that it failed because the phone’s already permanently unlocked. The drop down notification still shows network locked. I rebooted the phone and now shows AT&T. The repaired phone is shipped with 30C Nougat firmware.

After sending her V10 to LG, he attempted to temporarily fix his V10 to at least try to backup some files. Bad idea BTW. He googled on how to temporarily fix V10 bootloop. He took the phone apart down to the motherboard. He tried the hair dryer and it didn’t work. He tried the iron and it didn’t work. Maybe it needs more heat. He fired up his rework station and set the heat gun to 410F and heat up the CPU for a couple of minutes. He really killed the phone. The solder on the CPU oozed out side of the CPU. The CPU peeled off the motherboard slightly where he can see the CPU pins. Other components around the CPU shows signs of extreme overheating.

He put the phone back together and send it to LG. LG received it on Nov 30th, repaired it the same day and shipped it out the same day. It should be here on the 6th.

If you have the V10 and it’s bootlooping, it doesn’t matter if it’s rooted, bootloader unlocked, or where you bought it as long as you can show receipt, there’s a good chance LG will fix it. Act soon because I don’t know how long LG has extended the warranty to.

Good Luck