As some people has said that default creation of hotspot is not able to get it in use with android or any other OS.
So you have to use it another way.
first go to edit connections from task bar and add new connection in WiFi section.
Remember to use security with wpa & wpa2 personal method.
Also in genral tab, tick option that all users may connect to this network.
ssid = any name of your choice (e.g. Myhotspot)
mode : hotspot
band : Automatic
Device: select your wireless adapter from drop down menu.
Leave ipv4 and ipv6 settings. and save the setting.
Then from taskbar to start the hotspot,click on create new WiFi network
and then in connection select hotspot and click on create.
now you can use it in any device.
NOTE: dont turn on hotspot from network setting (From use as hotspot)
This method is for Ubuntu unity desktop version