my friend and I want to play chess is that possible on one phone?


To play live chess in one phone you should have two browsers in your phone. The first browser to open one account of yours. The second browser for the other account of your friend.
You will play on your own browser. While your friend on the other.

Chess Moves by Asim Pereira https://itunes.apple.com/in/app/chess-moves/id1230863103?mt=8

The lichess app "offline OTB" mode would be something I'd recommend.
If you have 2 phones but no Internet, I'd suggest my app
https://play.google.com/store/apps/details?id=com.adamtai.chessfor2&hl=en_US