Hello... I'm a senior citizen who's never had a mobile phone. However, over the weekend, I won a Pay As You Go, Sim-free, Motorola Gleam Plus phone in a raffle. It's a very basic phone but I may as well make use of it - if nothing more than just to acquaint myself with mobile phones. I know 'Sim-free' means I can slot in a Sim card from any provider, giving me flexibility, with no contract etc. However, I'd like to try a couple of providers just to see how good they are. So, forgive my ignorance, but I have two questions: 1) If I get a Sim card from 'provider A' but for whatever reason don't like the service, can I then just take out that card and replace it with a card from 'provider B' and so on without any problems? Obviously it's best to change after I've used up any topup amount.... 2) I don't know what my mobile phone number actually is at the moment: is it shown on the Sim card and if so, if I change that card, will that change my number??

Would appreciate any suggestions or help. Many thanks