Yes and no. When the software was written for these towers, they weren't taking into account phones such as the iphone. Compared with the phones available just a few years ago, the iphone is a relative supercomputer. So I'd say if anything, its more of a lack of foresight rather than a flaw. Who, save for Steve Jobs, saw the iphone coming a few years ago with the force that is has.
It hasn't to do with the kind of phone and if it has more power or not. Years back I saw a quite detailed document on how to modify certain areas of memory in low-end Siemens phone so it would agree too cooperate on exhausting timeslices form unsuspecting BTS. BTS's trust mobile stations by design.
