While official support for BlackBerry 10 (BB10) ended years ago, your BlackBerry Q10 can still run a significant number of Android applications. Because the native BlackBerry World store is largely defunct, installing the Google Play Store—often via the well-known "Cobalt method"—is the best way to breathe new life into your device.
A stable Wi-Fi connection is recommended as you will be downloading several APK files. How to Download & Install Google Play Store blackberry q10 play store download
The most reliable method involves installing a suite of modified APKs created by developer Cobalt to bridge BB10 with Google Services. While official support for BlackBerry 10 (BB10) ended
Go to Settings > App Manager > Installing Apps and toggle "Allow Apps from Other Sources to be Installed" to ON. blackberry q10 play store download