The sim card backup device is a very good product. It can easily backup telephone directory information from SIM/R-UIM card to backup device. sim card backup(read,copy,saver) can also easily restore telephone directory information asved in backup device to SIM/R-UIM card.sim card backup(read,copy,saver) can read the name and telephone numbers after backup to device in English.languages,sim card backup(read,copy,saver) with Calendar function. 1.The sim card backup(read,,copy,saver) is accordance with ISO/IEC7816,GSM11.11andGSM11.12standard.It can support3Vsim card and R-UIM card. 2.sim card backup(read,copy,saver) Volume:32KB(1000pcs telephone directorty tecords) 3.sim card backup(read,copy,saver) Device independent,No PC or PDA required. 4.Don't worry losing information when mobile phone lost. 5.Don't worry losing information when out of power. 6.Password protection 7.sim card backup show name and telephone number,with calendar function. 8.you can set LOGO by yourself