Phone shuts on black screen.

[Luis_Araujo]

My phone is a LG Stylus2 Dual Android version 6.0.1 Android security patch level 2016-12-01 Kernel version 3.10.49 Build number MMB29M software version V10d-AME-XX. It was bought in the USA on March 2017 and brought to Brazil, so no warranty. The problem is sometimes the phone, correctly charged, shuts on a black screen, little red light flashing, and the only way to bring it back is to remove and put back the battery. Then it turns on correctly. This happens sometimes 3 times in the same day. Any clue? Thanks, Luis.

 

[lunatic59]

The Stylo 2 was released in 2016 so I'm guessing you didn't buy it new. It could be a bad battery, or, from what I have read on other forums, when a LG phone does this it could indicate and electrical short or water damage. Has this phone ever been opened?

 

[Luis_Araujo]

Thanks for the reply. It was bought new, and the issue happens without relation to the battery, sometimes with it fully charged.

 

[Luis_Araujo]

Never opened or exposed to water.

 

[lunatic59]

Just because the battery shows it's fully charged doesn't necessarily mean it is. If the battery has a bad cell or a short it could easily go from on to off in an instant. Does the phone get warm at any time this happens?

 

[Luis_Araujo]

Thanks, it does not get warm, and I think it's not the battery, because when I remove it and replace immediately it just works without recharging.

 

[KBU2]

My phone is a LG Stylus2 Dual Android version 6.0.1 Android security patch level 2016-12-01 Kernel version 3.10.49 Build number MMB29M software version V10d-AME-XX. It was bought in the USA on March 2017 and brought to Brazil, so no warranty. The problem is sometimes the phone, correctly charged, shuts on a black screen, little red light flashing, and the only way to bring it back is to remove and put back the battery. Then it turns on correctly. This happens sometimes 3 times in the same day. Any clue? Thanks, Luis.

https://www.ifixit.com/Device/LG_Stylo_2

 

[Luis_Araujo]

????

 

[lunatic59]

Thanks, it does not get warm, and I think it's not the battery, because when I remove it and replace immediately it just works without recharging.

The phone circuitry uses voltage to determine charge. If the battery is discharging at inconstant rates it could easily report one second that it's got a good charge and then almost dead. Or, the circuitry itself is faulty. Those are really the only two things that I can think of that would account for a complete shutdown that requires a battery pull to restart.

 

[Luis_Araujo]

Thanks again, wouldn't a complete shutdown prevent the little red light in the upper left corner from flashing?

 

[lunatic59]

Maybe not, at least not immediately. Phones keep a small amount of power internally to maintain memory and settings even when the battery is disconnected.