https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332969#M164356 Did you ask for a new sim when your upgraded? as if so this should already be activated. If you didn't and it just arrived with one there is a chance your old one is still working and you will need to complete the sim swap process. Tue, 21 Apr 2020 12:29:20 GMT PhoneChanger 2020-04-21T12:29:20Z https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332947#M164351 I recently upgraded my IPhone to a newer version and bought a new SIM I changed them over fine but it’s been over 24hrs now and I still can’t make or receive calls? I have tried removing the SIM and putting it back in again but that doesn’t seem to work Tue, 21 Apr 2020 12:03:49 GMT https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332947#M164351 HannahM23 2020-04-21T12:03:49Z https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332948#M164352 Any help would be appreciated! Tue, 21 Apr 2020 12:05:20 GMT https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332948#M164352 HannahM23 2020-04-21T12:05:20Z https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332969#M164356 Did you ask for a new sim when your upgraded? as if so this should already be activated. If you didn't and it just arrived with one there is a chance your old one is still working and you will need to complete the sim swap process. Tue, 21 Apr 2020 12:29:20 GMT https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332969#M164356 PhoneChanger 2020-04-21T12:29:20Z https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332973#M164357 <P>Use your old sim card or you will need to do a sim swap which is taking much longer than usual</P><P><LI-PRODUCT title="Guide: Sim Swap: a mini guide 2017 update" id="Guide012"></LI-PRODUCT>&nbsp;</P> Tue, 21 Apr 2020 12:31:06 GMT https://community.o2.co.uk/t5/Apple/New-SIM-card/m-p/1332973#M164357 jonsie 2020-04-21T12:31:06Z