Once enabled, tap on the apk file to install.Or you can do it other way: Let’s say, you have downloaded the Toca Builders Mod APK file on Google chrome or firefox browser on your phone.Go to Settings > Apps & notifications or go to Settings > search for unknown > Open the app (Chrome, Firefox or file manager app etc) > Install unknown apps and enable Allow from this sourceSee the below screenshots that enables to install unknown apps on Oreo for Chrome app (you need to enable on the app from where you want to install the apk):

Select the actual app through which you want to install the Toca Builders mod app. – For Android Oreo or later, clicking on Install unknown apps which will take you to a list of apps. Enable app install from Unknown Sources to install apps from a third-party app other than Google Play Store.To do that go to Settings and search the word unknown– For Android Nougat or lower version click on Unknown sources and enable that setting.Install the Split APK installer app and then install this APK using that.Get the Toca Builders Mod APK file from the above download link.How to Install Toca Builders APK (Mod) on Android? Visit the Downloads section to download the mod APK file. Where to Download Toca Builders Mod APK file?

Toca builders app