To use the Play Store app, you'll need to turn background data on for your device. This means apps may download data for future reference or provide you with notifications even when you're not using the app. Settings are different on each version of Android. Check which version of Android you have.
When data saver mode is on and Wi-Fi isn't available, Google Play may be affected.You can choose to let Google Play continue getting background data viacellular datain data saver mode.
See Also
what permissions are necessary for google play servicesRemove a Play app from your Android deviceGoogle Play Services: Everything you need to knowGoogle App - Battery Drain (Android)- Open your device'sSettings app
. - Tap Network & internet.
- Tap Data usage Data saver.
- If data saver is off, you don't have to do anything. If data saver is on, continue to step 5.
- Tap Unrestricted data access.
- Scroll down and tap the Google Play Store .
- Tap the app or service you wish to turn on.
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.- Open your device'sSettingsapp.
- Tap Data usage Cellular data usage.
- Make sure you're viewing the network for which you want to view or restrict app data usage.
- Scroll down and tap the Google Play Store .
- Tap Background dataUnrestricted data usage.
.- Open your device's main Settings app .
- Under "Wireless & networks," tapData usage.
- In the top right corner, tapMenu.
- Tap the box next to "Auto-sync data."
- When the dialog box "Turn auto-sync data on?" appears, tapOK.
.Note: On some devices, your background data options may be under Settings 
Battery & Data Manager Delivery Background data.
