Why do i not always get my messages on my iwatch

Hi

If you are referring to text message notifications, how they behave depends on the settings and status of your devices. With Wrist Detection turned on, in order to bring notifications to your attention as soon as possible:

- If your iPhone is unlocked, you will receive notifications on your iPhone instead of on your watch.

- If your iPhone is locked or asleep and your watch is unlocked (regardless of whether the watch screen is asleep or awake) and on your wrist, you will receive notifications on your watch.

- If your watch is locked or has Do Not Disturb enabled, notifications will go to your iPhone.

More information:

About notifications on your Apple Watch - Apple Support