How do I set a separate launcher as default? I have a Huawei Y300 with Emotion UI. I want to change from the stock Huawei launcher to Holo Launcher. On launching Holo and pressing home, I do not get any options and am directly taken back to the stock home screen. 

How do I set Holo as the default launcher?
You have to clear the defaults in the Settings &gt; Application &gt; Your default Launcher. Then when you tap the home button, you will be asked to choose a launcher. You select the one you want and mark that as the default.

Generally when you install a new application, it clears the defaults for that category. So installing Holo should have done that for you. I wonder why that did not happen.