I finally managed to make a video call with Ubuntu Touch ! 
With the excellent app Webber (here), i created very easyly a webapp that's run Wire (here), a Skype alternative.
It's work very well ! Enjoy !
D
Best posts made by diddub
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RE: Morph browser - webapps issues and Javascriptposted in Support
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RE: Morph Browser on Lenovo Tab M10 (2nd Gen) WiFi TB-X306Fposted in Lenovo
@MrT10001 Try to set a scale as 10, 11, 12 or 13. It will increase the size of your text and icons docker but, on my Lenovo Tab M10, it fix the problem in Morph Browser too.