SIM card failure can definitely be frustrating, especially when it suddenly disconnects you from calls and mobile data. In many cases, the issue is something simple like dust on the contacts, a slightly misaligned tray, or minor physical wear from frequent swapping. Restarting the phone or testing the SIM in another device can help narrow down the problem quickly. And if you're troubleshooting account-related issues, having details like your tm sim registration number ready can also make support assistance much smoother.
