Doro 6880

[ChristineH]

I have purchased a new Doro 6880 mobile phone to replace my old one and I have upgraded my tariff to a rolling tariff. I assumed that I needed only to remove my SIM card from the old Doro phone to the new one, but this does not appear to work.
Do I need a new SIM card, or is there some other way I can get my new phone to work? Please help so that I can use the new phone.
Christine

[MI5 · Accepted solution]

@ChristineH 

Your sim should work but there maybe a crossover between you changing tariffs.

A rolling plan also needs a registered card for top ups so may not be setup correctly.

Contact details for O2 PAYG here Guide: How to find help & contact O2 

Rolling plan T&C's here https://www.o2.co.uk/help/pay-as-you-go/rolling-plans