I unlocked my bootloader, flashed some custom ROM and the ROM is working fine for several months. Today I decided to return to the stock MIUI global ROM. After finished flashing new images using
fastboot, I'm quite surprised when the phone asked me to login to Mi Account. It remembers the account id and my previous phone number correctly. This is when I'm not connected to Internet. I also have flashed TWRP cleared user's data many times before.
I would like to know where is this information stored? Is it on
/persist partition? Or, perhaps in Trusty OS? Is it possible to see what are stored there (apart from account id and phone number)?