If your Windows 11 laptop shuts down without a low battery warning, check notification settings, enable low battery alerts in Power Options, apply energy recommendations, and assess battery health.
If your Windows computer is making notification sounds when sleeping, restart it and see if it helps. At times, the issue is nothing but a glitch that can be resolved by rebooting. In case the issue ...
To change the notification sound on your iPhone, go to Settings > Sounds & Haptics. You can change the notification sounds on this page for the Text Tone, New Voicemail, Calendar Alerts, Reminder ...