Can the connection interval be lower than 30ms on iOS?

[Calvin]

Hello,

I am trying to get a lower connection interval from iOS. But the lowest connection interval I could get were 30ms. Anyone has experience to achieve the connection interval lower to 20 ms? What connection parameters should I use?

Any helpful information will be appreciated.

Best Regards, Calvin

[David Edwin]

The best possible should be 11.25ms when connecting to an iOS device as a HID over GATT keyboard, see the Apple guidelines above. To get the same for your Service you need to combine your Service with the HID over GATT. In addition you will need to let iOS do the connection management, use the HID keyboard example to get started.

[Calvin]

Hi,

Thanks for your information. Besides the lower connection interval, we also need transfer 6 packets at each connection event. And the packet size is 20 bytes. I wonder if the HID over GATT can achieve the conditions?

Calvin