Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for User Agent Switcher by TG2
Rated 3 out of 5 stars
it may or may not work properly .. didn't test only installed so I could see if there was an option to selectively switch UA on specific sites.
For the record, I'm looking to do this for any google entity so that I can block their f**ked up new sign in page. They use the agent string as one of the keys for presenting their latest "new" login page, which permanently associates the login rather than let the user select or not, the "remember me" check box.
If you add this feature (auto-spoof list or auto-switch based on host/domain) in the future, please send an update my way and I'll install and update a review then.
To create your own collections, you must have a Mozilla Add-ons account.