After updating the Play Store, also update Google Play Services to a Lollipop-compatible version (last known stable: around version 22.xx). This prevents many background sync errors.
While Android 5.1.1 is an older operating system, many versions of the Google Play Store still support it. Specifically, versions targeting are compatible with your device. However, modern versions of the Play Store (versions 51.x and higher) often require at least Android 7.0 (Nougat). To ensure a stable experience, you should look for the latest variant that specifically supports API 21. Top Sources for Google Play Store APK --- Google Play Store Apk Download For Android 5.1 1
If you are using a device running , you may have noticed that the built-in Google Play Store sometimes stops updating automatically. This can lead to missing features, download errors, or an inability to install new apps. After updating the Play Store, also update Google