Running test on multiple android devices

Hi all,
Anyone has experience in testing of app chat (messenger). Like account A on device 1 send text to account B on device 2. Now we automate:

  • Open app on device 1 send a text to device 2.
  • Open app on device 2, check receive text successfully.
    On this kind of test, we must run test case on multiple devices right? Anyone knows about this, can you guys share with me. Thanks so much.