Don't buy any Xiaomi device. No spare parts even at xiaomi exclusive centres.

[amjath]

not really sure , but recording calls without informing other party is illegal, you might run into trouble

Recording calls = phone tapping = snooping/wire tapping is an offense

 

[Gollum]

Recording calls = phone tapping = snooping/wire tapping is an offense

phone tapping your own phone is not a problem, you should not tap a call that does not involve your own voice.