Consider that everything is hard to navigate with a touch screen.
Consider that, of all text editors, vim is the best text editor for a mobile device.
And finally consider a real keyboard
https://www.ebay.com/itm/Motorola-Photon-Q-4G-LTE-Use-your-own-NANO-Sim-card/174709456691?epid=118366470&hash=item28ad7ebf33:g:x84AAOSwRkNfyD36
@namark yasss!!! I'm planning to buy keychron 
Vim is awesome!
It just a bit hard to navigate on mobile device.