Originally Posted by coolnes28
Wirelessly posted (BlackBerry7520/4.0.0 UP.Browser/18.104.22.168 UP.Link/22.214.171.124)
The BB uses an older 32k sim. The i730 uses a 64k sim so just swapping it would not work. I don't know why you would want the BB if you wernt getting the data services with it.
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This isn't entirely true. I upgraded at least 6 i730 phones to Blackberry 7520 devices last week. You can simply take the SIM out of the i730 and put it in the 7520. They are compatible. Of course, you have to call Nextel and have them add the Blackberry plan to your account, but you do not need a new SIM card.