However , dual SIM technologies have been found not to work with some phones .
The Turbo SIM is claimed to work with any GSM mobile phone produced since 1998 , and can be used to add new functionality such as larger SMS archives to some phones .
Dual SIM technologies have been found not to work with some phones .
The Turbo SIM is claimed to work with any GSM mobile phone produced since 1998 , and can be used to add new functionality such as larger SMS archives to some phones .