Hey there Annette55,
We're having an issue understanding what the actual issue is seeing as it's expected that your watch would become brighter in a darker environment. To better understand what's happening, along with ruling out some possible causes, please provide us the following details:
- What exactly leads you to believe this is unexpected behavior for the screen? The more details you provide, the better we'll understand the issue.
- Has your watch acted in a different manner in nighttime environments than in the past, and if yes, when did this first start?
- Sometimes unexpected behavior can be resolved with a restart: Restart your iPhone and How to restart your Apple Watch
- If you have a compatible iPhone model paired with your watch, the latest version is iOS 16.2. You can verify this within Settings > General > About. In case you needed it, this link shows how to first back up, then Update your iPhone or iPad.
- If you have a compatible watch model, the latest version is watchOS 9.2. You can verify this within Settings > General > About. In case you needed it, this link shows how to Update your Apple Watch.
Cheers!