Hi, I'm using an iPhone 4S running iOS 6.1. When starting a connection with my peripheral I see the iPhone starts the connection with a default 30ms connection interval. To try to reduce this interval to 20ms, I tried sending a connection parameter update request from the peripheral following the Apple BT LE guidelines, i.e. 20ms min, 40ms max interval. After this I am seeing a switch to a 37.5ms interval, rather than the 20ms desired. I've tried a few other combinations of connection parameter update values, but have had my requests rejected by the iPhone. Two questions: 1) Does there exist a set of connection parameter update parameters that would yield a connection interval less than 30ms? 2) Does there exist a set of connection parameter update parameters that can restore the 30ms interval after a longer interval has previously been requested and accepted? (e.g. to support switching from a low latency to high latency mode and later back again) Best regards John _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com