Phone won’t make calls

[Emma_2163]

Hi I upgraded my phone to the 13 last month and my phone will not allow me to send text messages or make phone calls 

[jonsie]

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. If you message O2 using the links below, they should be able to help you with this
or give them a call on 202  or 0344 809 0202

Guide: How to find help & contact O2 

[MI5]

@Emma_2163 

You need to use your old sim in the new phone or do a sim swap to use a new one.

Guide: Sim Swap: a mini guide 2017 update or do itb in your MyO2.

[japitts]

Does the phone show network coverage?