I thought I'd put this down as both things suprised me.
Vodafone: I've had my contract mobile, and hubby has had his internet dongle from vodafone for about 18 months with no issues. Hubby wanted to get a more practical phone, so applied to get his own mob contract from vodafone, and got it. This was 5 months in to BR.
With a mobile phone contract, as long as you stay with the same company, you will have no problems. They don't check the CRA - they just check to see that you have been making your payments on time and haven't missed any.