new upgrade sim not working

[kieron]

my new upgrade has just arrived i have inserted my new sim into the device and im getting a no service but my other contract phone is full bar of signal

[O2Stacey]

Hi Kieron

If you have upgraded and your old sim card fits in the new phone, you can continue to use the old Sim. If this is not the case you will have to get in touch with customer services to activate the new sim card by calling 202.

Hope this helps

Stacey  

[kieron]

hi yes my old sim fits and works in my new device when can i start using my new sim ?

[kieron]

as my old sim contract ends the 28th of april thanks

[jonsie]

You don't need the new sim as the tariff and contract has been tansferred to the old sim.

Only if you have a 5G phone will you need the new sim in which case follow the guide below

Guide: Sim Swap: a mini guide 2017 update 

[kieron]

thank you !

[jonsie · Accepted solution]

You're welcome