How to tell what carrier my iphone is

Here's how you can find your iPhone's cellular carrier without a SIM card.

Step 1: On your iPhone, open the Settings app and scroll down to tap 'General'. ... .

Step 2: You need to tap 'About' at the top of the list and your iPhone details will appear. ... .

Step 3: You will be able to see the carrier next to the 'Network'..

On most phones, you can find your manufacturer and carrier in the Settings app..

Open your device's Settings app..

Tap About phone. To find manufacturer info, tap Model & hardware. To find carrier info, tap SIM status and check under "Network.".