New phone new sim

[Ishea]

got the same sim but replaced as 5g to with ma new phone how to I activate as not working won't let me send a message or phone

[Cleoriff]

@Ishea 

https://www.o2.co.uk/help/phones-sims-and-devices/activating-your-sim 

[jonsie]

You may have to do a sim swap if your old sim is still active

Guide: Sim Swap: a mini guide 2017 update 

[Ishea]

Do I message it on my other sim to do the sim swap with my new sim jus saying emergency calls thank you

[Cleoriff]

@Ishea 

Use your old sim in the phone for the swap.