Currently, Apple does not allow you to change the default browser on iPad, iPhone and iPod touch devices. This will become possible in iOS 14. In a list of features for iOS 14, Apple confirmed that there will be an option to “set a default web browser and email app that launch when you click a link or want to compose a new mail message.”
You can, however, send pages from Safari to Firefox. Another option is to turn off Safari from the privacy settings. This page explains these options:
Send pages from Safari to Firefox
- From Safari, tap the share icon
at the bottom of the screen to bring up the share menu. (Note: You can also long-press on a link on a page to bring up the share menu.)
- Choose Firefox as the destination in the share menu.
- If Firefox is not listed in the options, tap the More button in the first row of the share menu.
- Tap the switch next to Firefox to enable it.
If you would like to see this change in the future, please leave feedback for Apple on their site: Apple feedback.
Turn off Safari in Privacy Settings
- Tap the icon on your device.
- Select , then slide the switch next to to enable or disable it .