1) The price is legit
2) Is in good condition (no scratches, cracks, etc.)
3) Doesn't have a broken screen (dead pixels and faulty colours)
4) Can be unlocked and works on your carrier (insert your micro SIM card)
5) Has a working camera (can focus and have flash lights)
6) Has speakers that works
7) Dial *#0*# and perform all the tests (make sure all PASS)
I love to play with the last option....
This is the screenshot from my smartphone
It will look like this after you press *#0*#
You can play with all the options available
Test 'em out to make sure that your phone is alright
