Question 1

Why can't I install FF21?

Accepted Answer

The installation of FF21 may fail because of the lack of device storage, poor network connection, or the compatibility of your Android device. Therefore, please check the minimum requirements first to make sure FF21 is compatible with your phone.

Question 2

How to check if FF21 is safe to download?

Accepted Answer

FF21 is safe to download on APKPure, as it has a trusted and verified digital signature from its developer.

Question 3

How to download FF21 old versions?

Accepted Answer

APKPure provides the latest version and all the older versions of FF21. You can download any version you want from here: All Versions of FF21

Question 4

What's the file size of FF21?

Accepted Answer

FF21 takes up around 29.9 MB of storage. It's recommended to download APKPure App to install FF21 successfully on your mobile device with faster speed.

Question 5

What language does FF21 support?

Accepted Answer

FF21 supports isiZulu,中文,Việt Nam, and more languages. Go to More Info to know all the languages FF21 supports.

FF21

FF21 Download APK 4.23 (29.9 MB)

Downloading FAQs

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All Versions

FF21 4.23

FF21 4.18

FF21 4.17

FF21 4.5

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