Apple has posted a Knowledge Base article on swapping SIM cards in iPhones, which the company says may be required for "repair, warranty service, or if you own an authorized unlocked phone (Germany ...

All iPhones and iPads with cellular have a slot on their sides that houses the Subscriber Identity Module (SIM) card provided by your mobile carrier. The SIM card enables your device to access the ...

MARLTON, New Jersey (WPVI) -- More and more criminals are taking over our cell phones and stealing our money, even bypassing two-factor authentication. The Action News Troubleshooters have some tips ...

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead.

I have an iPhone 4S and I'm about to pull the trigger on a Nexus 4... I don't want to commit to the new platform yet, and if possible I'd like to switch between the two phones from time to time. I ...