The APP software functional requirements
The Bluetooth version of the iOS device is 4.0 (the iPhone 4s +) ,and the iOS version of iOS7.1 +. Support unicom/mobile GSM network, only support calls and text messages, does not support data function.Support calls and SMS cloud service functions, namely: the product is disconnected from the phone , through a cloud service calls and text messages are pushed to the  APP client, to prevent drop calls and information. Note: the cloud services need to use the SIM card data traffic!Support for multiple languages (tentative: in Chinese and English).Support the user device via a Bluetooth connection to remind function (App successfully connected, pop-up window within the App shows successful connection).Have lost alarm function, when the product is lost, by mobile phone disconnected for the last time and product when the position of the mobile phone can quickly find the product (this feature requires open mobile location services).Support reading phone original address book function, and address book synchronization function.Support phone number display equipment, telecommunications operator name and equipment power function. Hardware Function:Through APP  the connection to the iOS ,( iOS7.1 system or above).Bluetooth module( 10 meters, Class I).Battery : lithium ,450 MAH,  support more than 4 hours and 48 hours standby.Plug the device: SIM card types: NANO SIM card.USB port types: MICRO USB. MODEM Performance Indicators:Types of network: GSMNetwork Band: GSM850MHz EGSM900MHz/DCS1800MHz/PCS1900MHz  Package Included:1* Bluetooth Dual SIM Adapter1* USB Cable