Not got any service since changing sim

[Anonymous]

As I have just finished paying for my handset I have changed to a new sim and 4G. Since doing so last night, my phone is showing 'no service'. Does anyone know how long this this will last for before I have full use of my phone again ? I have tried speaking to O2 Guru and although after 9am there are none available to chat. Mary

[MI5]

If you want 4G on your phone you need to get an EE or Three sim.
O2 and Voda won't work.

[jonsie]

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@MI5 wrote:
If you want 4G on your phone you need to get an EE or Three sim.
O2 and Voda won't work.

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And of course get the phone unlocked. As you have paid off the phone you are free to leave O2 unless you took out another 4G contract.

[Anonymous]

Edited as copied wrong bit!