Question: what to do before donating old cell phone?
Answer: Clean Your Phone. When you trade in your cell phone, aim to return it in the best condition you can. ... 
Back up Your Phone. ... 
Conduct Factory Reset. ... 
Encrypt Your Data. ... 
Remove SIM or SD Cards. ... 
Find Your Phone Model. ... 
Assess Your Phone for Water Damage. ... 
Perform a Function Test.