How do I uninstall iOS 14.6

You don’t.

Apple has never had any procedures/provisions for reverting/downgradimg to a previous version iOS/iPadOS.

iOS/iPadOS upgrades/updates are one-way ONLY. Up.

Sorry.

Rowdy17 Said:

"How do I uninstall iOS 14.6: I installed the newest iOS and lost my ability to play movies I have saved to my iPad…how do I go back to iOS 13.4.1?"

-------

Restore your iPhone from a Backup:

Have any backups of this iPhone prior to this upgrade If so, then restore your iPhone from one that particularly contains this info (your most recent backup). If not, then take this as a learning experience, knowing to always backup your device prior to making any major change to it(i.e. upgrade installations). Important: Back up you iPhone prior to performing this restoration, should anything go wrong from here on out.