I'm experiencing an issue with StandBy mode that first appeared on my iPhone 14 Pro Max after updating to iOS 26.7.1 (possibly 26.7.2). I've since upgraded to an 18 Pro Max, but the issue persists.
I use my phone as a bedside clock, where it remains on a MagSafe-compatible charger throughout the night. I play audio from the YouTube app (normally for about 3 hours), and I've never enabled Always-On Display.
Previously, the StandBy clock would remain visible all night. Since the update, the screen eventually turns completely black and requires a tap to wake the clock.
What I've observed:
- While audio is playing, the StandBy clock remains visible.
- It stays visible for roughly 1 to 2 hours after playback stops.
- Around 3 hours or more after playback stops, the screen turns off completely.
I've confirmed the following:
- StandBy > Turn Display Off is set to Never.
- Always-On Display is disabled (and has always been disabled).
- Sleep Focus is enabled overnight (this wasn't an issue before the update).
- Low Power Mode is not enabled.
- The proximity sensor is not obstructed.
This happens every night and is consistent.
Has anyone else experienced this or found a solution?
