Android - communicating between two devices

Question

What is the best way for an Android app installed on two devices to communicate with each other? Can the devices connect directly without using text messaging?

Answer 1

you should have a look at WifiDirect

Wi-Fi peer-to-peer (P2P) allows Android 4.0 (API level 14) or later devices with the appropriate hardware to connect directly to each other via Wi-Fi without an intermediate access point.