How to make an android phone use a wi-fi hotspot created on ubuntu [duplicate]

Solution 1:

Defining the problem:

Official android distributions do not show ad-hoc networks in the wifi list, but they are capable of connecting to them.

Solving the problem:

Option 1) Create an infrastructure network instead of ad-hoc, if your cart supports this mode.

Option 2) Root your device and force it to show ad-hoc networks in the wifi list by altering the network config or installing a custom ROM to it.