Nexus 4 hardware does not support OTG. The OS is irrelevant. For wireless keyboard/mouse you need to use Bluetooth devices. You also cannot use OTG and Slimport simultaneously, on micro-USB devices that support Slimport.

@guru ...and great! I wish I could use it as well as my daily phone. I do not like to repeat myself so please just read what I have written above. I've nowhere written that there is no possibility to use this OS on a daily phone isn't it? Only I stated above and gave my arguments to this it is not suitable for me as a main OS on daily phone. Wish You all the best!

@NeoTheThird Double post here : https://forums.ubports.com/topic/696/trying-to-install-on-nexus-4 The last post from lashenric can be deleted isn't it ? (you can delete my post too)

@doniks I think this cable seems to be what you're looking for: http://www.sinforcon.com/product/html/359.html If you manage to get it, just remember to use a multimeter to check that the 3V is actually on the microphone terminal first.