Most of the Android devices like Samsung, LG, HTC and Motorola all come with the Google Play store pre installed. But for some lesser known devices, especially smaller ones from Asia, may not include the app store.
Here's how you can install it:
1. Head to Settings
2. Scroll down and Click Security
3. Scroll down and enable Unknown Sources
You will get a message warning you about the dangers of installing apps outside of Google Play.
Just click "OK"
4. Next, go to apkmirror.com
On apkmirror, search for the Google Play Store and select the latest version and "Download."
5. Once it has been download on the phone.
Open the file, either to the notification menu or the downloads folder and install it.
To make sure it is Enabled, here's the steps how:
Go to Settings > Apps > Google Play > Enable
Note : If you see the word "Disable" it means it is already Enabled.