download Pokemon Go game install on smartphone.
1. First, go to settings. Enter the Security menu. Swipe down to "Unknown sources" option under "Device administration" header and turn it on.
2. Go to this page on APK Mirror from your android smartphone. Tap on Download APK. After seeing a warning message, tap on OK. The file will start downloading.
3.Once the download is complete, swipe down on the homescreen to access the notification panel. Tap on the file to install it.
done and enjoy