: Your device must have an unlocked bootloader to flash custom files.

Go to Settings > Apps > See all apps > Show system . You should see "Google Play Services" and "Google Play Store." That is it. No Gmail, no Maps, no YouTube (you install those manually from the store).

After installation, tap (if TWRP offers this option) and swipe to confirm. Then tap Reboot System .

: Even though the "pico" package is tiny, some older devices have very small system partitions. Ensure your ROM didn't already fill the /system partition.

: Ensure the device has at least 50% battery to prevent mid-installation shutdowns. Step-by-Step Installation Guide

: The CPU architecture. Most older or budget smartphones use ARM. 7.1 : The Android version (Nougat).

If stuck on boot animation >20 min:

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: You must have a custom recovery installed, such as TWRP (Team Win Recovery Project) or OrangeFox.

The smallest package size. It only includes the absolute essentials: Google Play Store, Google Play Services, and Google Services Framework. It is designed to save system space and RAM.

: The CPU architecture (32-bit), commonly found in older smartphones and budget tablets.

The package is the smallest version available. It includes only the Google System Base, Google Play Store, and Google Calendar Sync. It does not include apps like Gmail, Maps, or YouTube, which you can download later from the Play Store. This is ideal for older devices with limited system partition space.

: Short for the Open GApps Project, an open-source, community-driven initiative that packages Google Mobile Services (GMS) into flashable zip files for custom recoveries.