Unable to connect the world

I cant connect to my world friend, so he open menu for multiplayer and when i try to connect it keep loading and loading until it appears “Unable to connect the world” so i literally try every method,e.g., re-start my phone , reconnect my wifi , reinstalling the game , re adding friends etc. but it still doesnt work at all . my friends using Android and it same 1.14.60 neither cant join the another