How can I find out who the previously owned to my Galaxy S5?

[AC Question]

how can i find out who the previously owned to my galaxy s5

I was sold a galaxy s5 threw a friend, it was unlocked, but with no sim card. The service provider is T-Mobile, although my provider is Metro PCS. I was told that, Metro PCS and T-Mobile are compatible, is that information correct?

 

[VidJunky]

Re: how can i find out who the previously owned to my galaxy s5

If I'm not mistaken they are all compatible except Verizon.