The location of your SIM card will depend on your iPhone model. If you’re using an iPhone 14 or newer sold in the U.S., you won’t be able to find a physical SIM card as there isn’t one.

How to activate a T-Mobile SIM card online You may find it easier to activate your T-Mobile SIM card on your computer as you'll skip the call to customer service by following these steps: ...

If you want to upgrade your iPad to have 3G/4G capabilities, you need to equip it with a SIM card. Our beginners' tutorial explains where to get the right SIM card, and how to do install it.

Apple has offered the ability to use an eSIM ever since the arrival of the iPhone XS, but there was still a slot for a standard SIM card. In the U.S., that changed in 2022 with the introduction of ...