Why after build app to apk,
Apk not installed in my phone android version 11
Can you help me
Welcome,
Maybe you can give some more info about your project else it would become a guessing game. 
1 Like
Hello dssergeant06
Do you get any error messages? There should be a warning about installing Apps from an unknown source, which you can ignore for the purposes of testing on your own phone.
There are all sorts of things that can fail an install. Go through my checklist:
ProfessorCad: Tips & Tricks Cannot Build/Install/Run APK
Check the version code (must be > than the previous one [at least for Play Store]) and the keystore (must be the same as the previous one).
Also try uninstalling the previous app and try again.