Hi Peter,

Firefox for iOS 143.2 will be rolled out in the near future. You may want to keep an eye on it and update immediately to see if it improve the performance on your device.

Sorry about the inconvenience!

Thanks. Will check after release

Thanks. Will check after release

I have installed v144, and unfortunately it is still not improved, with continued use, Firefox’s responsiveness becomes worse.

You’re not alone — Firefox on iOS can sometimes slow down after being open for a while. Here are a few things that usually help:

Clear cache and website data: Go to Settings → Firefox → Data Management → Clear Website Data. This can free up memory and speed things up.

Close background tabs: Having too many tabs open can cause lag, especially on older devices.

Update Firefox and iOS: Make sure both are on the latest versions — newer updates often fix performance bugs.

Restart the app or phone occasionally: iOS can slow down apps that have been running for a long time.

This is still an issue, 3 months later, with firefox 146.1 on iPadOS 26.2. Symptoms are as described in https://github.com/mozilla-mobile/firefox-ios/issues/30497

Right, this regression is still unresolved.

While this has improved with the latest updates (v148), i still observe a big difference in responsiveness when clicking links / closing or switching tabs after a few hours of use (browsing, opening/closing tabs) compared to the behavior after a fresh start. Thanks for looking into this

I’ve had the same problem on Firefox iOS after opening a lot of tabs. Restarting helps for a bit, but it gets slow again. Hope it gets fixed soon.

@Peter & Jordi

Thanks for sharing with us. I just posted a comment on https://github.com/mozilla-mobile/firefox-ios/issues/30497

Let's see if the team is planning any further fix on that one.