got this 5s yesterday in the mail and it should work with tmobile because it's factory unlocked gsm. the top left corner says t-mobile and dynamically changes from 4g, e, lte, etc. however, i can't text, call or use data. can only browse the web when on wifi and text. speaking of texing, imessage will only send messages to ios for some reason. sms (green bar) says it was sent, but not getting replies from people.
what i've checked so far
1. if it's jailbroken or not (it's not)
2. if the imei is blocked (it's not)
3. if the sim was activated (it is)
anyone know what's up or had this happen before?