Battery drain issue Bell 3gs, unlocked for Telus

[shanti.vt1]

Hi there I have a bell 3gs with baseband 6.15 unlocked to so I can use the Telus Network.

If I get a bell sim do I just plug it in and leave it for about 5 minutes and then use my Telus sim without battery drain issue any more?

Or do I have to use Itunes clear everything out?


Thanks