BLE and traditional bluetooth choice __ Bluetooth

As the accessory of mobile communication, choose Traditional Bluetooth (Classic BT) and low power consumption Bluetooth (BLE) to compare and discuss the process;
First clear our function is to use mobile phone with the attachment of communication, to achieve mobile viewing status (data Flow direction: Accessories-> mobile phone), and control accessories (data flow direction: Mobile phone-> accessories). The communication data has small data from the external sensor, as well as the at life of the peripheral module,
A, the mobile phone support degree.
(1) Classic BT by all smartphone/tablet support, but to achieve our function, Apple Series products need MFI certification. (only some commonly used traditional Bluetooth profile does not require MFI authentication.) such as hands-free, advanced audio, etc.).
(2) BLE was android4.3 above support (as of 201 April-August, android4.3 and above market share of about 30%), Apple iphone4s above (Iphones4s listed for more than two years, can be considered socially in the use of the iphone version >=4S) support. And BLE does not need Apple's MFI certification.
(3) BLE does not support audio.

From this point of view, compromise consider BLE and MFI certification, ble relatively more advantages than classic BT.
Of course, there are conditions, the use of traditional Bluetooth +MFI certification, so that basically can cover all smart phones.


B, chip function and cost
Looking for a long time, did not find a single chip integrated MCU, classic BT and its protocol stack, profile of the SOC, and the use of MCU+HCI layer Bluetooth, function is not particularly suitable for us (peripheral components, PCB area, high cost). To get a new look at the Bluetooth HCI layer and profile protocol stack.

C, conclusion
Sacrifice audio function, only small data transmission, single chip SOC implementation Mcu+ble+ protocol stack, and prices (such as cc254x, NRF51822, etc.) relatively cheap, peripheral circuit less, so determine the use of BLE.