Hi Aaron just a shot in the dark. iOS HID driver accepts volume up events and also supports HID over LE as far as I know. So, if you implement an LE HID Keyboard and send the volume up, you should be fine. best matthias On 07 Apr 2014, at 01:29, Aaron Xu <overheat1984@gmail.com> wrote:

Hi,

Is there any function to control iPhone's volume + button through my BLE device?

I want to develop a gadget, which control iPhone to take photo. I think it will work if I open the Camera APP on iPhone and "press" the volume + button by my BLE device.

Any solution for this? Please let me know.

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