I have a Blackberry Storm (piece of sh**) from Verizon, and it's the 4th one I've been thru and I do NOT want another one, but I don't want to pay $200 for a new phone, and I am due for the upgrade but don't have the money. My mom has a Blackberry Pearl but it's from at&t. Does it matter the different networks if it's the same brand of phone? Can I put in my SIM from my Storm and activate the Pearl?? Thanks!