Aporte original por: Daniel Argyle ,
Most operating systems always want your apps to have permission to access any data on your phone. In my specific phone and operating system (LG Stylo 3), to access the permission I just locate the apps list in settings, click on the menu button, select configure apps, and the first available setting is app permissions. There you can turn on any permissions that your contacts app may need to run properly. To avoid these problems in the future, it is wise to Allow services that apps request access to. As long as you trust the application at least.