After an excruciating waiting, I will finally receive my refurb from AT&T. I intend to unlock it (already have a T-Mobile SIM card) as soon as checking the phone is fine. I do not want to screw everything taking unnecessary risks so I decided to ask for reassurance here : Is there a way to check battery status and the phone itself without activating it with a 2-year AT&T plan ? If the prepaid option were widely available I would go for it but that does not seem to be the case. Thanks !