Xiaomi Mi Mix 2S wireless charging stopped working


Nov 28, 2014
28
5
15
#1
Today my Mi Mix 2S stopped working wireless charging. The charging logo is not shown on the screen nore its loading when put on the charger pad (Nilkin pad).
Line charging is working well.
EU Rom 8.5.17 is running on the Mi MIX 2S smoothly.

Has someone an idea to resolve this issue of no more wireless charging?
 
May 16, 2018
49
9
20
#2
First of all, I would make sure if your charging pad is working, the cheap ones tend to break. If you are sure your hardware is working maybe a clean flash of your current rom may help
 
Nov 28, 2014
28
5
15
#3
I flashed already the miui_MIMIX2S_8.5.17_1c738a0a19_8.0.zip dev ROM from Xiaomi and also the xiaomi.eu_multi_MIMix2S_8.5.17_v9-8.0.zip EU ROM
-> without success

I tried with 4 different charger pads (Nilkin, Vinsic and 2 no-name)
-> without success

Any further idea welcomed.
 
Nov 28, 2014
28
5
15
#5
Unfortunately flashing stable stock rom did not bring back the wireless charging function.

I assume that the charging coil inside the mi mix 2 S is faulty. (Mi Mix 2 S was in use for less than 3 weeks!)
Does someone know where i can get that spare part?

mi_mix_2_S_charging_coil.jpg
 
May 16, 2018
49
9
20
#6
Unfortunately flashing stable stock rom did not bring back the wireless charging function.

I assume that the charging coil inside the mi mix 2 S is faulty. (Mi Mix 2 S was in use for less than 3 weeks!)
Does someone know where i can get that spare part?

View attachment 18834
Where did you buy it? If it's less than 3 weeks old you should be covered by warranty for sure. You should contact your seller before disassembling your phone
 

MarkHUK

Founder of Xiaomi.eu
Staff member
Nov 6, 2010
4,994
3,025
1,000,000
#7
Try the phone on another charger mat before considering the phone is defective if possible... Cost of a new mat < new phone :)
 
Nov 28, 2014
28
5
15
#8
I tried 4 different qi charging pads already -> without success
I will get some brandnew pads by next week then i will give it a final try.
The phone i bought at a shop from A..E...e.s
 

MarkHUK

Founder of Xiaomi.eu
Staff member
Nov 6, 2010
4,994
3,025
1,000,000
#10
I tried 4 different qi charging pads already -> without success
I will get some brandnew pads by next week then i will give it a final try.
The phone i bought at a shop from A..E...e.s
You shouldn't buy from that site : ) it would explain a lot about why this perhaps doesnt work.
 
Nov 28, 2014
28
5
15
#12
What else i did:

I have flashed with tool:
Mi Flash 2017.4.25.0

Firmware Version:
Xiaomi_Mi_Mix_2S_V9.5.15.0.ODGCNFA_20180425_8.0_China

-> clean all and lock
______

I also flashed the MIUI10 fastboot pack
polaris_global_images_8.6.14_20180614.0000.00_8.0_global
/ extracted tgz
-> clean all, lock
flash_all.bat etc.
______

Interim results:
Wireless charging still not working (no charging logo). Tried with different charger pads - Mi Mix 2 S device naked - without any case or cover.
Why there is no separate Hardware test for the wireless charger within Hardware test menu CIT of the Mi Mix 2 S?
There is only a test for line charging which passed my Mi Mix 2 S! Line charging is working.

I assume this is a hardware issue -> charging coil receiver inside the Mi Mix 2 S is faulty.
I would have exchanged the charging coil by myself but that spare part is just not available anywhere at the market.

Xiaomi_Mi_MIX_2S_charging_coil.jpg


In the meanwhile i had a livechat with al.E.....s, since my seller did not respond.
I should get an email from them within the next 2 weeks since i am eligable for refund procedure as a valued customer...

The final results of my journey through the service and after sales services desert i will post here next.