From Press Release:
AUGUST 9, 2018 – Cary, NC — Epic Games is excited to announce the Fortnite Beta for Android is launching this week.
Players with Samsung Galaxy devices are the first to be invited, starting today. Additionally, purchasers of the new Samsung Note 9 or Galaxy Tab S4 will get access to the new Galaxy outfit. More details can be found here.
Fortnite will be available for direct download via Fortnite.com. Fortnite will not be available through the Google Play Store.
Fortnite on Android supports full Cross Play and Cross Progression with PlayStation 4, Xbox One, Switch, PC, Mac, and iOS.