Actually i had a problem with the sound in one phone call i made, but just in one.
And i dont know if it affects the baterry life...
To what baseband version you recommend to downgrade?
The MIUI S3 is based in wath version?
I'm asking because i install the official XXELKC, and then re-install the MIUI -2.12.14 and it says on the section about phone - baseband version XXELKC...