My SIM card doesn't work

[Android Central Question]

What kind of SIM card do I need to buy for my S7 Edge Galaxy to turn it over to Straight Talk

 

[B. Diddy]

Welcome to Android Central! What's the exact model number of the phone? Use the compatibility checker on their website to make sure it'll work, then proceed with ordering a SIM card there: https://get.straighttalk.com/keep-your-own-phone/