How do you clear other space on iPhone?

If that article does not help..

You can use the Contact Support link in the upper right of your screen so that Apple can troubleshoot 'Other' storage issues on your device.

Get Support

OR you can do the following:

Backup/Reset/Restore your device, review these links:

How to back up your iPhone, iPad, and iPod touch - Apple Support

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

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Clear Other storage on your iPhone or iPad - Apple Support

your response makes no sense..

if 'other storag has already been cleared'... then how it is 'consuming more than half of the total storage'

I posted a link in my first response to you.. click on the blue text and it will take you to an Apple support article