Corrigindo o Erro “Application Installation Failed” no Android Studio
Session ‘app’: Error Installing APKs
DELETE_FAILED_INTERNAL_ERROR
Error while Installing APKs
Solução:
Vá em » File » Settings » Build, Execution, Deployment » Instant Run » Desmarque » “Enable Instant Run to hot swap code/resource changes on deploy (default enabled)” » Apply » OK.
Agora basta compilar novamente seu aplicativo.