Like many others I tried it but it's disappointing.
My 100+ tabs are lost.
It seems that on Android there are two types of tabs, recently open (the one open on the current session maybe?) and older one (from previous sessions). The older one are not recognize by onetab, thus not recorded.

This extension just took 100 open tabs and saved only one! 😠 Those were important. I like OneTab for PC, but this mobile extension makes you guys pure trash.

First time I tried to use it, it closed all my tabs (nearly a hundred that I'd kept open across crashes, reboots and FF updates for months) and gave me a list of only the most recent two. I think this is probably the first time in my life I really feel like I could murder someone. I'm sure it will pass but it won't stop me hoping the developer gets hit by a bus.

Does not respect hidden tabs, therefore cannot be used with Simple Tab Groups or other tab managers. Completely useless in it's current form.

I've used this extension religiously for years on my desktop and I love it. However, I just installed it on my Android phone and upon using it, it deleted ALL of my tabs and didn't even save them!! I had over 100 tabs open and now they are gone! I am EXTREMELY disappointed.

Used OneTab for desktop Firefox forever, I installed it to use on my Android phone and it deleted ALL of my tabs which are now unrecoverable!!! DO NOT USE OR YOU WILL LOSE YOUR DATA!

Like many others said, saved like two tabs and deleted dozens of others. DON'T DO IT. Send your mobile tabs to Firefox desktop and use onetab there.

Deleted hundreds of tabs on mobile despite showing as working in the mobile store. Only saved on unimportant tab. Don't trust it!!

Пользовался расширением много лет, никаких сбоев не было. И тут внезапно перестал открываться. Потерял пару сотен ссылок.

lost all tabs in onetab

this thing dont work:

"Data safety

Don't worry about closing OneTab - you will not lose your stored tabs. Even if you close all tabs and exit your web browser and restart your computer, the tabs you have stored in OneTab will not be lost. "

Does not work on android. Closes all tabs but only saves like one or two.

Ate 50 tabs of research, saved three unimportant ones. Could've used something like the right-click context menu available on desktop to save a certain group of tabs one by one like I had wanted to.

Took over 100 open tabs and converted... one of them. That was it. That was all.

Had 64 open tabs and it only converted 4 of them :(

Absolutely useless. After restoring tabs Firefox tried to load content of all tabs at once which resulted in an infinite loop of loading without any result. Had to kill FF with the Task Manager. Lost all tabs. Avoid.

I tried this add-on today, having so far been fairly pleased with it on FF for Windows. I had 30 tabs open on FF for Android. OneTab saved the most recent three and deleted the other 27 from existence. The fail is impossible to exaggerate. I will probably remove this and hunt for alternatives on FF for Windows too.

Used to have this on Chrome in 2018, worked. That's why I trusted it and didn't export.
Now, in 2020 on Firefox/MacOS, didn't restore 48 tabs, but removed them from the list. Hours of work destroyed, no chance to know which 48 of ~ 1000 tabs were relevant to me.

Had the infinity Mark for over 100 tabs, and 'add all tabs to onetab' saved a grand total of TWO of them. Real useful. Beware, Android users.

Lost over 100 tabs on Firefox for Android. OneTab only saved… one tab: this very page. Why on Earth is this plugin marked as compatible for Firefox for Android?