Hello, I was wondering if agk can have different devices communicate to each other in a multiplayer game? Like an iPhone and an android. Thank you in advance!

yes it can

really? it will be very great to support this.

Yes, as long as they are on the same WiFi network. Although there is a bug in HTC android devices (at the OS level) which means they will not be able to join named networks since they are incapable of receiving broadcasts. They can only host a network or direct connect to one using an IP address.