Skip to main content

Released September 25, 2015. Model A1688/A1633. Repair of this device is similar to previous generations, requiring screwdrivers and prying tools. Available as GSM or CDMA / 16, 32, 64, or 128 GB / Silver, Gold, Space Gray, or Rose Gold options.

2573 Questions View all

Rapid battery drain and front mic doesn't work

Hello! I’ve got an iPhone 6s with two (I suspect) motherboard-level issues: 1) incredibly fast battery drain; 2) a non-functional front microphone (used for Siri and speakerphone calls) with quiet sound, sometimes static, and sometimes fully working audio after recording audio for a few minutes.

I tried replacing battery multiple times, but it didn’t help — this 6s goes from 100% to 1% overnight! I also tried replacing front camera flex cable (the one with front camera, ambient light sensor, and a microphone) but it didn’t help either. In both cases, I did multiple replacements: two batteries and three front camera flex cables.

I know that I’m looking for a motherboard-level repair now, but before I go to the repair shop, I’d like to know what kind of repair I should be looking for. For battery drain, I believe I’ll need to replace the Tristar/U2 chip, but I have no idea when it comes to the front microphone.

Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

1 Answer

Chosen Solution

I don’t think this would be a Tristar issue. It sounds like you have a partial short on one or your power rails probably from a faulty IC maybe Tigris or speaker Amp but it is hard to say without taking measurements and knowing the phones history.

Was this answer helpful?

Score 2

Comments:

Thank you, Chris. The only thing I know is that this phone fell into the snow for a few minutes (two years ago), and I had to dry it as some of the water got into the speaker grid. I also used non-MFI charging cables, but I doubt those could mess up the phone. iPhone's motherboard looks perfect to me, no signs of water damage whatsoever.

by

@Nikki Hi Nikki, I have a similar problem to yours, except my 6S has no sound at all. I also replaced the battery and had the Tristar replaced but to no effect. could you please let me know what the problem was exactly? it would be much appreciated thanks

by

Add a comment

Add your answer

Nikki will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 4

All Time: 87