Before Selling Your Android Device

The smart things to do before selling your Xiaomi Android device:

1-Back up your data

2-Delete and deactivate your phone from your wireless carrier

3-Remove SIM and memory cards

4- encrypt and Factory data reset your device

5-Remove any spare accessories or include them

6-Charge it

7-Clean your device

Edited: encrypt and then factory reset. (Thanks for reminding me)