Hi this is new method to get assistant on lolipop devices.You need to update your google app via play store then follow following steps:
- Update Google App.Then install “QuickShortcutMaker” App Click here to install.
- Then open that app.In search Bar type “assistant”.
- Click on Google app then select 3 option and click on create as shown in picture.
- Now goto homescreen and click on new google icon.You got google assistant’s startup page.
- Now click on thee dots button (upper right corner) then select settings.
- In settings add you voice and thats it.
- Whenever you want to use assistant just say “OK Google” Or Click on Homescreen’s new icon
Comment Any Question If You Not Got That.