Battery Drain After Screen Replacement

"It's certainly possible, depending on the quality level of the screen. Even ""premium"" screens could do this but you wouldn't expect to see so many screens unless you got a really bad batch.

The easiest way to test is to replace the battery with a Power Supply and note the current draw and how it compares between good and bad screens. A poor quality backlight could draw excessive current. Also, are you eliminating the FCAM/Sensor as a variable?"

Mostly this issue happens after replacing a fake lcd screen,becoz a fake lcd screen alwyz takes a lot of power jus to controll screen adjustment like backlight,slide motions and touch becoz its not meassured professioanally like the original one which came with the phone.the only option is to replace with original screen.you will see much differance on battery drainage..!!!

Same here. Replaced with a fake screen on 6s. Using original one made no sense from investment POV (as it seemed then haha). Now I have it almost constantly connected to powerbank :)

Hi. I have same issue but I noticed that when i lifte the bottom of a screen of of the body the battery stays normal. Maybe isolation issues?

"Have the same problem, thats how the battery drain with everything turnt to off to save battery (ex: localisation, background refresh, notifications, etc.)

Phone will drain from 100% to shut down in a short period without using it."

"Solved for me: Someone in this thread suggested changing the home button. Mine in contrast to theirs was the original home button that I’d moved into a new third part screen. (It didn’t come with a button). The original button was Touch ID that stopped working.

So the battery would drain fast until eventually it was destroyed. (Too much charging and discharging).

The replacement button cost peanuts and I replaced the battery at the same time. Really pleased because I thought I might have to buy an original apple screen as people here have suggested. This worked for me anyway. Now I wake up and the battery is as charged as when I went to sleep. Bingo."