Switched over to MetroPCS expecting a smooth number transfer, but it didn’t go as planned. Waited longer than the estimated time, and my phone was stuck between carriers with no service. Found some useful info on https://metropcs.pissedconsumer.com/customer-service.html that pointed to account authentication being a common delay. Contacted support, and they confirmed the old provider hadn’t fully released the number yet. Once that was cleared up, the transfer completed within an hour. Double-checking account details before switching can help avoid unexpected delays.