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 ...
If you don’t like the default notification sound on your iPhone, tough luck. Apple hasn’t provided any means of changing it going back as far as we can remember–thus the iPhone’s long-standing ...
With iOS 17, Apple changed the default iPhone notification sound – and many users didn’t like it. Some said it was too quiet; others simply preferred the old sound. But there wasn’t much you could do ...