StatCounter ignores Firefox mobile



a year ago
11 months ago


(Reporter: will69, Unassigned)


Firefox Tracking Flags

(Not tracked)


(Whiteboard: [sitewait])



a year ago
StatCounter identifies Firefox mobile and tablet user agents as "desktop".


Go to with Firefox for Android (mobile or tablet)
Go to
Find Firefox entry marked with "You"
Switch to details view (looking glass)

Firefox for Android is identified as:

Browser: Firefox 54.0
OS/Platform: Unknown/Desktop

Expected result:

Browser: Firefox 54.0
OS/Platform: Unknown/Mobile


Browser: Firefox 54.0
OS/Platform: Unknown/Tablet

Here are the respective user agent strings:

Mozilla/5.0 (Android 4.4.4; Mobile; rv:54.0) Gecko/54.0 Firefox/54.0
Mozilla/5.0 (Android 4.4.4; Tablet; rv:54.0) Gecko/54.0 Firefox/54.0

This may very well skew your complete mobile market share on, the largest provider of free web statistics with country breakdown.

Comment 1

a year ago
StatCounter has indicated they are going to update their detection.
Cool. Thanks for reporting AND doing the outreach, will69! Highly appreciated. :)
Ever confirmed: true
Whiteboard: [sitewait]

Comment 3

a year ago
Here is an easier way to reproduce the problem: .
Seems like this is not fixed. The test page from comment 3 still pretends that my mobile browser is a desktop browser.
will69, is there anything new? If not, do you mind forwarding the email you sent to so I can follow up? Maybe a email address does some wonders.
Flags: needinfo?(will69)

Comment 6

a year ago
Dennis, I have forwarded the email to your PM. This really needs to be fixed.
Flags: needinfo?(will69)
Seems like this is not yet fixed. curious if you've heard anything new? Thanks
Flags: needinfo?(will69)
Flags: needinfo?(dschubert)
I reached out to StatCounter's CEO a while back.  I have not heard back.  
I will try reaching out again.

Comment 9

a year ago
Aodhan Cullen confirmed they were going to update their detection on 2017-06-23. I never heard of him again. Nor did he make good on his promise. I have since used their web interface (above) to report other inaccuracies, to no avail.
Flags: needinfo?(will69)
Forwarding this to Adam, he told me they are also in contact.
Flags: needinfo?(dschubert) → needinfo?(astevenson)
Thanks Dennis! Looks like Peter has it covered here.
Flags: needinfo?(astevenson)

Comment 12

11 months ago
StatCounter has fixed this for Firefox mobile and tablet user agent strings on as well as Thanks Aodhan!
Last Resolved: 11 months ago
Resolution: --- → WORKSFORME
You need to log in before you can comment on or make changes to this bug.