Just flashed Mogul to cricket but...

[chowdermonster7]

Okay, so as the title says i have flashed my mogul to cricket. But what i dont get is why i cant call out. and also, whenever i recieve picture message, I can only see txt; no picture. im guessing the mms problem is because sprint doesnt actually send you mms messages, they just alert you that one has been sent to you and they allow you to download it from the site. But i have no idea why i cant call out. whenever i try it, it tries to get me to activate my phone over a verizon wireless network or ill just get a busy signal. If i could have any help it would be greatly appreciated. thanks.