The quietness of the iPhone alarm is most likely due to the alarm volume setting being low or affected by certain features. The iPhone alarm volume is controlled by the "Ringtone and Alerts" volume slider in Settings > Sounds & Haptics, not by the volume settings inside the Clock app itself. If this slider is set low, the alarm will be quiet. Also, if "Change with Buttons" is off, the physical volume buttons will not affect the alarm volume. Additionally, if the iPhone has Attention Aware Features enabled (in Settings

Face ID & Passcode), it may lower the alarm volume when it detects you are looking at the phone, making it quieter than expected. Focus modes like Sleep can also affect how the alarm sounds. To fix a quiet alarm:

• Go to Settings > Sounds & Haptics.
• Increase the volume slider under Ringtone and Alerts.
• Consider turning off "Change with Buttons" to avoid accidental volume changes.
• Disable Attention Aware Features in Face ID & Passcode settings.
• Check that Sleep Focus or other Focus modes are not suppressing the alarm sound.

The alarm volume works independently of the silent switch and will ring even if the phone is muted, as long as the volume setting is adequate and sound is set for the alarm. This approach should restore the alarm to a proper audible level.