I love this add-on!
With the recent onset of Apple enforcing its "proprietary" right to use the emojis we are all used to, Slack, et al were forced to switch to their own, non-Apple Color Emoji typeface -- and if you're like me, they're HIDEOUS emojis. This extension allows me to permanently spoof the user agent to an iOS device for specific sites where I use emojis a lot. Like Slack, fb, etc.
When I was using Chrome browser, I could only achieve this by CTRL+I and de-toggling "Select automatically" under the Network Conditions sub-menu inside dev tools. So this permanent fix in Firefox is exactly what I wanted.

This app is so helpful.

Very good addon to go past google search filter limitations when using firefox android browser. I use it to whitelist google domains and load the chrome android user agent when doing google searches so i can have all filters.

I used the Chrome string and was able to login to Directvnow. I am able to watch in Firefox rather than stupid Chrome. I will donate soon.

This is the best useragent switching addon.

可以在A
droid上使用

Great add-on. But need latest browser user agent.

I tried several user agent switching add-ons, and this is the only one that did what I wanted properly: allow a whitelist for sites to only apply the selected user agent. And it has an update splash disable option, which should be a requirement for all add-ons.

Berfungsi dengan baik untuk android, terimakasih.

在安卓平板上用非常棒……

Very good

perfect

In addition to choosing OS type and browser type, it allows to choose both the OS version and the browser version. Everything is provided as a pre-configured strings.

Very good spoofer. Use it to work around Facebook messenger. Only problem is that I can't get the whitelist to work.

user-Agent很全

Thank you.
Do you plan to change the user agent randomly?
By now I have to select a user agent at the start and after some time.
A blacklist and whitelist for certain sites would be nice too :-)