Re: Question about the Blackberry 9900
I doubt there will be any 'changeover' It has been discussed/debated ad nauseum. Timeline looks like the phone will be dropping November/December of this year, but I am sure there may be a carrier that offers upgrades every 7-8 months.
BB10 will not be running on any device that is currently available. All apps that currently work on now on an existing device will not be available for any BB10 device.
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