Related to this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1038045

Basically, on my ZTE Open under FFXOS v2.1, multitouch only sort of works.

What this means is that multitouch only registers discrete inputs when there is 
a large Y-Axis (taken from phone's "normal" portrait orientation) delta between 
the two fingers.

If the Y-Axis delta approaches zero, FFXOS seems to average the location of the 
two inputs into some intermediate point.

See this video for a demonstration of this behavior:
http://youtu.be/n9cVHCBHuYY

Furthermore, the ZTE Open under FFXOS v2.1 seems unable to register more than 2 
discrete inputs, likely due to the above issue with the Y-Axis delta.

This bug severely limits the number and kind of gestures the ZTE Open can 
support under FFXOS, and makes even the stock gestures usable in only very 
specific circumstances.

For instance, as in this bug, 
https://bugzilla.mozilla.org/show_bug.cgi?id=1037894 , the Pinch to Zoom 
gesture will ONLY work when the device is in Normal Portrait, or inverted 
Portrait orientation.
Video of this behavior: https://www.youtube.com/watch?v=kgaUxMYGOvs

So, what I'm asking for is if anyone would be willing to test out this app & 
report back to me:
https://marketplace.firefox.com/app/multitouch-detect

I need three things:

1) Device Name & FFXOS version

2) How many fingers (max) it could detect

3) Whether or not two fingers side-by-side (Y-Axis delta =ish 0) registers 
discrete or "averaged" input

I'm curious if this is only a ZTE Open issue, or only a v2.1 master issue, or 
what, and Gabriele would like some further info/clarification on what 
devices/OS versions are impacted.

Thanks all!
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