What will you do if your SIM card is locked?

If you're an iphone user and the SIM card is locked, here are the steps to help you unlock it.

1. Contact the carrier. If you have another phone, try to make a call to the carrier's customer service. If your carrier has a website, also get in touch with customer support via the live chat on their website.

2. Get PUK Code to unlock. You should ask for the PUK code after getting in touch with customer service. The code is 8 digits and you'll have 10 attempts to input it.

By the way, if your iphone shows "SIM not valid" or "SIM not supported, then try to deal with the problems a computer program called iMyFone iBypasser.