Hi All, Haven't bought a used phone in a while, but I need something to use until I can order the X. I was curious to see what I should look out for, as I do not want to end up with an expensive paperweight. The seller advised it is unlocked (originally at&t), so I am bringing a sim card tool, to ensure my tmo sim works. I have heard of icloud locks, as well as it not being paid off. Is there any way to check this when I meet up with the guy? Anything else to look out for? I will have my 6S with me, so I am curious if there is a reputable and quick way to scan the imei? Thank you in advance!