New iphone via uswitch

[FionaM]

I am on a pay monthly contract currently .  
My phone is currently not working due to rain water damage and I need to replace it as I have no phone.  I know I need to pay off the balance of my device plan and have had a look at upgrade options for a new iPhone , the best deal I see is via uswitch and nothing from o2 matches this .   
I have contacted live chat but got cut off mid chat twice so no idea if I can do this .

Can I just purchase new contract via uswitch and cancel my current one with 02 ? I really wouldn't want to lose my number but would save quite a bit going via uswitch .

any advice appreciated , thanks 

[MI5 · Accepted solution]

@FionaM 

Yes yoou can get a new contract and just call O2 to migrate your number Guide: Migration & porting into O2 

This will of course cancel your old contract and generate the final bill with the full amount of your remaining device plan.