on 30-07-2023 09:00
I’d like to upgrade my tarif (sim only) but I’m currently abroad (in USA). Can I do this without any problems?
on 30-07-2023 09:08
on 30-07-2023 11:08
Yes you can.
I've done it myself so know it works without any problems.
As long as you choose to keep your same sim. All changes are made on the O2 system which automatically updates your tariff online.