You can keep your mobile contract, as long as it's not one of the debts going in to the IVA.
Obtaining a mortgage will be difficult on normal high street terms. There are specialist lenders who lend to people in IVAs to release the equity in their property towards the end of the IVA, but as your credit rating will be poor they will charge a higher rate of interest than high street lenders.
If your bank account is in credit and not therefore part of the IVA creditors, then you may be allowed to keep your switch card, however, if not, there are pre-paid cards you can buy, check out
www.pixpaycard.com, you load them with cash, then you can use them like a debit card until it needs topping up.
Philip Beck
Licensed Insolvency Practitioner and IVA specialist