Turn up the media volume using the volume buttons
Open Settings and increase the sound or volume level
Disable silent mode or Do Not Disturb
Check the ringtone and notification volume separately
Make sure Bluetooth is disconnected from external audio devices
Clean the speaker grille gently
Remove any phone case blocking the speaker
Disable volume limit or headphone safety settings
Turn off any equalizer or sound enhancement that lowers volume
Restart the phone
Update the phone software
Test the speaker in safe mode
Reset sound settings if available