Bluetooth 4.0之後就將通訊模式分為高速及低速種類，目前將低速低耗能簡稱為BLE，可以連接一些量測型的感測器類型像：心跳計、血壓…等，這使得iDevice不再是利用MFi認證過的Dock才能與iDevice連接，增加APP型態的多元。

如果想要跟BLE週邊連接，iOS提供了CoreBluetooth framework來與週邊連接，整個程式中分為Discover、Connect、Explore、Interact，下面將會以從連線至BLE讀取到資料為原則來介紹。

-Bluetooth 4.0 will then be divided into high-speed and low-speed communication mode types, currently referred to as the low-speed low-power BLE, you can connect a number of measurements like type Sensor Type: heart rate monitor, blood pressure ... and so on, which makes the iDevice is no longer use MFi certified Dock to connect with the iDevice increased APP diverse patterns.

If you want to connect with the surrounding BLE, iOS provides CoreBluetooth framework to connect with the surrounding, the entire program is divided into Discover, Connect, Explore, Interact, the following will be read from the data connection to the BLE to introduce the principle.