What should I do if my Tmobile sim card is not working?

Troubleshooting Your T-Mobile Sim Card: A Quick Guide • Troubleshooting Your T-Mobile Sim Card: A Quick Guide - Learn what to do when your T-Mobile SIM card isn't working in this concise and informative video. Discover easy steps to identify the problem, from checking if it's really the SIM card to trying a quick reboot. Find out how to clean and properly insert the SIM card, and ensure it's activated if it's new. Get your SIM card back up and running with this helpful guide!
00:00 • What should I do if my Tmobile sim card is not working?
00:34 • Is It Really the SIM Card?
01:00 • Have You Tried Turning It Off and On Again?
01:21 • Is the SIM Card Clean and Well-Seated?
01:44 • Is the SIM Card Activated?
02:05 • When to Contact T-Mobile Support