You reach for your Android phone, only to be greeted by ... try inserting your SIM card into it to confirm whether the problem lies with the card or your phone. You might need a replacement ...

If you suspect a problem with the SIM card, you can test it on another ... Manually And Change The Network Type Although your ...

If you get this message and your iPhone actually does have a SIM card, use the following troubleshooting tips to narrow and nail down your problem ... rebooting the phone may get things working.

but it's easy to do if you need to replace it with a new SIM card or perform troubleshooting to resolve a problem with your phone. You'll need to find the SIM removal tool that came with your ...