Hackers have succeeded in (partially) unlocking the iPhone so Apples much-hyped device can be used on at least one network other than AT&T.
Although the iPhone Development Project team has broken the shackles tying the device and AT&T directly, there are still limitations that mean customers can use pre-paid SIMs from Cingular, for example, but not yet use any SIM of their choice.
A tool called iASign will unlock the iPhone allowing it to be used with any Cingular or AT&T SIM with FULL functionality of the iPhone, avoiding the need to use the iPhone-specific SIM that comes with the device. Virtual network operator pre-paid SIMs also work, providing these operators piggy-back on AT&Ts network.
Using alternative SIMs provides several advantages. In the case of a Cingular SIM, theres no need to sign up to a new two-year contract. Those whose businesses subscribe to Cingular can use company SIMs on personally-bought iPhones. Finally, those not wishing to tie themselves to a contract can use pre-paid SIMs.
View: Full Article @ El Reg Hardware