No service after upgrading

[Anonymous]

I've just upgraded my phone, I inserted the sim that came with the new phone but my signal says no service, I keep turning it off and on again over the past 24 hours but still nothing, I think this may be normal and have a feeling it could take up to 48 hours but just wanted to check if this is true or not?

[MI5 · Accepted solution]

Have you done a sim swap yet ?
http://swapmysim.o2.co.uk/

or use your old sim if it fits - the upgrade will have been applied to your account and your old sim updated by now.

[Anonymous]

Thank you for your reply, I thought if you up grade they give you a new sim to put in it? I've always been with O2 but can't remember what I've done in the past when I've upgraded, will try my old sim, thank you 

[MI5]

They give you a new sim in case your old one is a different size, but the new sim isn't activated until you activate it if needed.

[Stamey]

How do you activate it ? Please

[MI5]

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@Stamey wrote:

How do you activate it ? Please

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By doing the simswap I linked to above 

[Stamey]

Thanks . I got the phone today from the O2 shop . I assume they did it . I can't get s screen with phone or message icons

[MI5]

If you have a signal at the top of the screen then the sim is active.
Try swiping left and right on the screen you are on to get to your home screen.