How to set home screen on the ZTE Quartz?

That depends on what home launcher you use. Can you tell us which one you use?
If I may recommend, I would recommend the following:
- Smart Launcher 2 (link) I use this and in my opinion, it's the best.
- Yahoo Aviate Launcher (link)
- Nokia Z Launcher (link)
- Nova Launcher (link)
- Go Launcher EX (link)

Hope that helps! :)

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