dash

[opal blaze]

cas

contextactionservice

[iron osprey]

you an use userinputservice to detect if a player is on mobile
and then show like a dash button or use a Touch event

local UIS = game:GetService("UserInputService")

if UIS.TouchEnabled then
    print("Phone Player")
end

if UIS.KeyboardEnabled then
    print("Pc Player")
end

it returns a bool value ( true/false )

[opal blaze]

yes

but cas default has a mobile button