I have a concern whether bots created using Microsoft bot framework v4 is compatible in teams or not. I have uploaded my manifest in teams yet I'm not receiving any reply from bot where i used to get replies from the bot created using v3 version
V4 bots are very compatible with Teams and I believe most, if not all, features work. I've built several V4 Teams bots that have used quite a few different features and they all worked. Regarding Andrew's comment, Teams has their own Teams Bot Builder SDK that is in beta for V4 (it's basically a wrapper that makes some of the Teams-specific stuff easier). You don't need it, though. You can build a regular bot without it, using the standard BotBuilder SDK V4, and it still works just fine with Teams.