The increase volume button is not working on my iPhone 15 Pro Max

Mianmateen wrote:

My iPhone volume + buttons not working tell me please what to do

[Re-Titled by Moderator]

?

Have you shutdown & restarted the iPhone ie power off/on...if no resolve continue

Restart your iPhone - Apple Support

Reset or a Force Restart,

Force restart iPhone - Apple Support

Restore from backup, restore as new device.

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

ref: Adjust the volume on iPhone

Put your iPhone in diagnostics mode - identify potential hardware and software issues

How to put your iPhone in diagnostics mode - Apple Support

iPhone Repair and Service - Apple Support

iPhone Repair & Service - Apple Support

Check Device Coverage

Check Your Service and Support Coverage - Apple Support