When I pop in a registered sim WITH BIS will my BBM and e-mail stay the same as it was when I had my ATT sim?
I afraid that when I pop in the european sim, it will remove my e-mail settings and BBM contacts/groups basically.
you should have no trouble, as the email accounts (and i believe the BBM contacts) are connected to your BIS account via your device's PIN. You may have to confirm your BIS username / Password in the device's set-up wizzard to re-activate your email accounts on the device, but should be a simple step...
Might want to test it with a friend's SIM before leaving though, just to be sure...
