on 01-04-2020 10:01
on 01-04-2020 10:07
If you are on refresh you will stop paying for your device and just continue with airtime, which will be cheaper overall.
If you have a standard contract (only one direct debit or bill) you should change to a sim only tariff to save money. You can do that in your MyO2.
Your pone will continue to work regardless as you will be put onto a 30 day rolling contract automatically.
Guide: How does O2 Refresh work?