Why does an Apple device that uses iAP2 have full compatibility?

- Sep 11, 2019-

Q. How do I know what communication system does my Apple device support? 


A. Refer to the three sections highlighted above. All devices under Not Compatible do not use either iAP1 or iAP2. Those devices will most likely not work with any accessory, except your headphones. All devices under Limited Compatibility use iAP1. All devices under Compatible use iAP2. 


Q. Why does an Apple device that uses iAP1 have limited compatibility?

 A. iAP1 is an older communication system, and it was not created to support fast and continuous access to data from an accessory. In other words, it was not created to support fast indexing and browsing by an accessory (vehicle infotainment system). Apple devices that solely use iAP1 will have a slower response time or will transfer data to an accessory at a slower speed compared to Apple devices that use iAP2. This means that Apple devices that solely use iAP1 will have longer indexing times. iAP1 still does support indexing and browsing, but it is most reliable with a smaller media library. A smaller media library means that an Apple devices has a fewer number of songs.


Q. Why does an Apple device that uses iAP2 have full compatibility?

A. iAP2 is the latest and greatest communication system, and it was created to support fast and continuous access to data from an accessory. In other words, it was created to support fast indexing and browsing by an accessory (vehicle infotainment system). Apple devices that use iAP2 will have a faster response time or will transfer data to an accessory at a faster speed compared to Apple devices that use iAP1. This means that Apple devices that iAP2 will have shorter indexing times. iAP2 enables faster indexing and browsing of Apple devices with large media libraries.