HID Mouse Behavior Bug on iOS 27

After updating to iOS 27 (across iPhone models) the mouse control behaves very differently from previous iOS versions. Very quick (milli sec) and precise mouse movements, with the same starting position and the same deltas applied do not end the mouse cursor at the same position every time. It's almost as if deltas are either being skipped, dropped or ignored. This occurs no matter what the sensitivity of the mouse is set to. This seems like a bug. Is any one else experiencing this issue?

Posted on Sep 29, 2026 10:04 AM

1 reply

WheelieNick

Level 9 (74,110 points)

Oct 22, 2026 12:49 AM in response to colossus489

Hi there

Please try this to see if you can fix the issue

Restart the iPhone: Perform a force restart (press and quickly release Volume Up, press and quickly release Volume Down, then hold the Side button until the Apple logo appears) to clear temporary system glitches.
Check for Software Updates: Install newer minor point updates (such as iOS 27.0.1 or later patches) via Settings > General > Software Update, as Apple continues to roll out stability fixes for early iOS 27 bugs.
Re-pair Bluetooth Peripherals: Unpair and reconnect the mouse under Settings > Bluetooth to reset the HID stack connection.