Chosen Solution

I am using iPhone 6(IOS 10 public beta)Lately I found out that it couldn’t detect near by wi-fi, even the wifi router is just about 2 meters far it only appears 2 block, plus the GPS can locate me but it couldn’t track me(only appears my last location(not moving)) Is it a IOS 10 bug or my attena is broke? Sorry for my terrible grammar.

Roll back to the stable releases and you will know. Since we cannot examine your phone, we cannot know. You have to try for yourself.