@JessePCCDid you just activate? Try swapping your SIM card into another phone to verify whether it is a problem with the phone or SIM card first.
Like take the sim out of my phone and try it on another phone why it had been working with public mobile all fri. Already on fri new sim and 50$ plan
@JessePCC try it back in your phone to see if it works now. Sometimes all you need is a restart of a phone to get everything working again!