You'll need your iPhone's IMEI number if you want to unlock it and use it on a different cellular provider.

There are two types of phones—those locked to a carrier and those free to use whatever carrier they want. There will come a time when you need to know which one your phone is. Thankfully, you'll have ...

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. The ...

Looking at the back of your phone should normally give you the manufacturer name or logo and sometimes it will also state the phone's model, but it usually won't have the full model number. There are ...