2. Check SIM Card and Tray Ensure the SIM card is properly seated in its slot: Turn off your iPhone and remove the SIM card. Check the SIM card for any visible damage.

You can check if your device is locked through the IMEI information, or by switching out the SIM card, or by checking via the device's mobile settings.

If you've ever called your carrier's customer service to activate a prepaid SIM card or troubleshoot a malfunctioning Android SIM card or iPhone SIM, then you've likely needed your ICCID number ...

Before you can activate your SIM, you need to know which type of SIM your device supports, allowing you to choose between an eSIM or a physical SIM card. Here's how to check this out on Android or ...

BSNL is rapidly rolling out its 4G services nationwide. If you are an existing BSNL subscriber, here's how you can check online if your SIM card is 4G-enabled.