If i switch from Telus to Rogers and get a new phone, can i keep my current number?

If you want to change another network but keeping same number,First you will do Number portability.After getting your new sim card,Make sure your new phone is unlocked one.If it's restricted by single network means,try to unlock your mobile before swap your sim.For unlocking visit Unlock-Zone.com and you can get free unlock instructions from MobileUnlockGuide.com .I hope it will be very useful to you.