h810 9008 stuck fix

This is a bad board — I’m surprised it went this long; mine died 1.5 years in — mine is a 509K* (which I still have, as I never recycled it). From how I understand it, it’s a PMIC issue, but I think the problem lies with multiple chips. The Snapdragon SoC LG used was also known to run hot, so combine that with a known PMIC failure, and you can probably understand why these phones are known to fail… yet the same SoC didn’t cause others with it to drop dead, just throttle.

If anyone sees this with an LG G4 that somehow isn’t dead yet, learn from me and OP; get a new phone and move your data while it works! They will all fail due to this issue!

Reflow the board to get the solder contact to be good enough to pull the data from the phone. I used a hairdryer (Conair 1875) on high until the board was hot to the touch (but I could still handle the phone), and it didn’t force a heat related shutdown — it will probably throttle, but that’s fine; if you’re doing it to pull data and scrap the device, it’s not an issue. The downside to the hairdryer is that you need to run it on low near the phone to maintain a stable temperature since you only get a few chances before the solder no longer reflows. It was a risky operation, but I had photos I wasn’t sure were backed up, and it was potentially my only chance.

If you aren’t prepared to risk it and lack the proper experience to avoid mucking the job up (you only get a few tries!!!), take the phone to a shop and ask them to reflow the board so it’s stable without supporting heat and runs long enough to pull the data. Once you pull the data, erase it and scrap the phone.

If you have them do it, here is what you do: Ask them to reflow it so it stays on for a while and even survives past the data recovery potentially (but please do not use it again; get your data off and REPLACE the phone). The best way to get them to agree is to prove I moved on by buying a new one and showing the shop I took it out of service.
TELL THE SHOP YOU KNOW THIS IS A BUM PHONE, AND YOU NEED IT TO WORK SO YOU CAN PULL DATA AND HOPEFULLY ERASE THE PHONE. I don’t see why any good third-party shop wouldn’t reflow the device for you and test it for a little bit so you can recover the data. Data>erasure with these!!!

Once you get your data off, move it to a new phone — not an LG, as they left the mobile business. These days, you’re usually better off paying cash for an unlocked phone since you finance them with installments today. These also use a MicroSIM, which no modern device uses (they all use NanoSIM now); you’ll need a new SIM, too, especially if you buy a 5G phone, as the SIM these used wasn’t designed to be 5G compatible. After mine died, I used a Nokia L635 to bide my time (as it used the same SIM card) and later a Moto G5 Plus. I got the G7, which was fine, and then a 4G G Stylus 2021. Now I use a Samsung A42 5G (which I wish I didn’t now, as it lacks some key 5G bands, but that’s on me — should have gone with a 5G Nokia).
TIP: With AT&T, you can purchase a prepaid device and use it on a postpaid plan (I’ve swapped for others who had older postpaid phones age and need a new phone but do not need a $1,000 phone); remove the Prepaid SIM BEFORE you turn on the phone. If you fail to do this, it locks to Prepaid for 1 year, and you need to call AT&T to remove the Prepaid SIM lock.