> - For the above reasons (short time, relatively small number of users), I am 
> not too concerned that large numbers of web developers are going to have been 
> detecting our "Tablet" string, or that this will lead to frustration at our 
> "ever-changing" UA.

Agreed that major fallout is unlikely - do we have a list of the most heavily 
used mobile tablet sites to verify that this change will not cause severe web 
regressions though?

> - This decision is going to be widely publicised so that any necessary sirens 
> can be set off, to make sure everyone who might be affected is aware.

When do you expect to have a final comms plan (blog posts and necessary TE)? 
Thanks!

-Alex

On Dec 18, 2012, at 8:03 AM, Gervase Markham <g...@mozilla.org> wrote:

> Hi everyone,
> 
> After taking all input into account, I have decided that we should drop the 
> "Tablet" token from Fennec's UA on tablets. This is what Android browser and 
> Chrome do, and corresponds to option D) of my original options. So for 
> non-"Mobile" devices, it would be:
> 
> Mozilla/5.0 (Android; rv:12.0) Gecko/12.0 Firefox/12.0
> 
> We should be aware that we _may_ in the future need to add "Touch" on Windows 
> 8 Metro only, if developers start detecting it in large numbers and 
> consequently sites start breaking. We should write up on MDN and publicise a 
> document of best practices in detecting and using touch events cross-browser, 
> to try and make that less likely.
> 
> It's relevant to note that, according to recent ADI data, Tablet users make 
> up about 25% of Fennec installs, for a total of about 388,000 ADIs, so 
> perhaps a million users. (Thanks to Anurag Phadke on the Metrics team for 
> getting the data for me here.)
> 
> To elaborate on some points people may ask about:
> 
> - We would therefore use "Mobile" on devices where we thought a mobile 
> experience should be the default, and the desktop UA where we think a desktop 
> experience should be the default. At the moment, opinion seems to be that 
> phones are "Mobile" and tablets from 7" up are not, but we have the 
> flexibility to change that view later.
> 
> - Given the short time this token has been in use, and the small number of 
> Tablet Fennec users (relative to e.g. desktop), we don't expect significant 
> compatibility problems. The speed we deploy this change is a trade-off 
> between "minimising the number of browsers with the old UA" and "making sure 
> we can detect any compatibility problems". So therefore the exact timing and 
> train schedule of deployment of the change would be a matter for the 
> release-drivers.
> 
> - For the above reasons (short time, relatively small number of users), I am 
> not too concerned that large numbers of web developers are going to have been 
> detecting our "Tablet" string, or that this will lead to frustration at our 
> "ever-changing" UA.
> 
> - This decision is going to be widely publicised so that any necessary sirens 
> can be set off, to make sure everyone who might be affected is aware.
> 
> Lastly, I'd like to apologise for putting "Tablet" in in the first place. 
> That was my call, and it was a mistake.
> 
> Gerv
> _______________________________________________
> dev-platform mailing list
> dev-platform@lists.mozilla.org
> https://lists.mozilla.org/listinfo/dev-platform

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