https://www.pcgamer.com/the-fortnite-android-beta-test-is-live/

Epic Games kicked off the Fortnite Android beta test today, with the first round of invitations going to owners of Samsung Galaxy devices. The beta is currently support on the Galaxy S7 and S7 Edge , S8, S8+, S9, S9+, Note 8, Note 9, Tab S3, and Tab S4, and anyone who buys a new Note 9 or Tab S4 will also get a swanky new Galaxy outfit. 

The beta will be made available to non-Samsung devices "over the next few days," will the following hardware officially supported: