Sim from Android to Iphone?

[Fishy]

Hi - I put my Samsung into the washing machine sadly.  Went into 02 who said SIM card still working though contacts not stored on it.  I still have an amount outstanding on Contract.  Friend offered an old iphone to use.  Can I just transfer SIM card into the old iphone and use?  Assume contract & monthly payment still carry on as normal?  Do 02 need to know I no longer have the physical Samsung but changed to Iphone? 

Thanks for any help.

[MI5]

@Fishy 

Sim will work fine and O2 dont care what you use but you will need O2 to add iData to your contract.

Guide: How to find help & contact O2 

[Fishy]

Thank you for your help!