You're in the right place to get your O2 4G sim working.
You can also use our handy sim swap tool for:
If youâre new to O2, you donât need to swap your sim - youâll already have the right one.
Before we get started, youâll need:
Sim swaps usually take less than an hour. But if weâre really busy, it can take up to 24 hours.
Step 1 Enter your mobile number
We need to check your phone is yours. Just type your mobile number in the box below and click submit. Weâll text you a code that youâll need to enter on the next screen.