Solution:
Possible reasons for realme Watches not vibrating may include the following. Please attempt the following troubleshooting steps to resolve the issue:
1. If the watch is not being worn, it may not vibrate or provide reminders.
2. Press and hold the power button for at least 15 seconds, then wait for the watch to restart.
3. Navigate to Settings > System > Reset and perform a reset of the watch.
4. After successfully reconnecting the watch, ensure that it is updated to the latest version.
If the issue remains unresolved, please take your device and proof of purchase to an authorized nearby realme service center for assistance.