Update, they won't even help me to BUY from THEM a new usb module. Wow, Xiaomi has just lost an enthusiast customer.
This is a Xiaomi forum, can someone help us?
I managed to contact them, and explained them this is clearly a build issue, but the reply was something like "you're not in China, so no warranty". Just wasted 250+ euros.
Same problem here, now i'm trying to re-solder it, my problem seems a simple desoldering. btw, i've bought my m2a 6-7 months ago. Seems many m2as are suffering this problem. This should be under warranty. I'm starting to regret buying this phone.
from miui.com (http://www.miui.com/thread-273544-1-1.html)
Edit
i tried also with another lockscreen from same page and i can't apply that too. it's really strange!
Hi guys! A couple of hours ago i downloaded a lockscreen called Simplicity. I've put it in my mi2a (3.5.3 version) and imported it with theme application, and all went fine. I just can't obtain authorization when i try to apply that. Are you experiencing the same problem? Is it server related?