Compatible with most DCT4 and BB5 Nokia mobile phones, The No-Key Nokia X-SIM allows users to bypass the lock and utilize different service providers. It is available at www.one-stop-china.com, can unlock Nokia mobile phones that operate with a SIM card, allowing phones to work in any network.

The working theory of the X-SIM is that each phone operates on an identification system. The mobile phone checks if the SIM card matches the operator. If so, it opens; if not, it doesnt. The X-SIM card gives a signal to the Nokia mobile phone simulating the original SIM card. So, phone never really unlocks, it just allows the user to operate in any network.

The user will need to combine their SIM card with the X-SIM, then insert into the phones SIM slot. The cost for the No-Key Nokia X-SIM is $31.69.