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1. Happy this app is really great.Excellent Booster & Cleaner Application Very Useful For My Samsung S20 Fe Mobile Thanks A Lot For This It Helps BravoYou can't tell if your phone is fully clean or not.I like this app more than the other ones I've tried.

2. Good apo try it.Easy to use and effective, it doesnt demand excessive amounts of time you could use for other purposes.

3. A+ devsI'm going to keep leaving negative reviews on apps made by this developer until they explain what happened to Lynx photo vault.

4. I'm not saying that this app is no good without those two other apps I used to use with this one.

5. I love the booster and closing the apps I didn't know were running in the background.

6. All I'm saying is that when I would use all 3 apps at the same time.

7. I uninstalled one of this companies other apps for the same reason, and they turn around and did the same thing with this app.

8. Run it twice and the same percentages of clutter appear each time.This app is pretty good.

9. People including myself have lost thousands of pictures and videos with no explanation despite countless emails to the developer email address.

10. This one is the only one i would take the time to review because its that good.

11. I could go 3 house down from my house and still get wifi along with fast internet speed and never drop my wifi for being out of range.

1. Fix Booster & Cleaner Not Working/Crashes/Errors/Unresponsive & Black/White screen:

1. Restart Booster & Cleaner: Restarting the app will resolve most errors.
2. Update the Booster & Cleaner App. Here is how:
   1. On Android goto PlayStore » Search for "Booster & Cleaner" » Open Booster & Cleaner - Keeps fast » click "Update".
   2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Booster & Cleaner » click "UPDATE".
3. Clear Booster & Cleaner - Keeps fast app cache: Clearing cached data will force your app to retrieve the latest data directly from Booster & Cleaner servers.
   1. On Android, goto Settings » Apps » Select "Booster & Cleaner - Keeps fast" » click Storage » click "Clear Cache".
4. Check Booster & Cleaner app permissions. If any of these permissions required to use your device's features are disenabled, Booster & Cleaner might not work.
5. Uninstall and reinstall Booster & Cleaner. If nothing else has worked, completely uninstall Booster & Cleaner then reinstall.
6. Restart your device. Last, restarting your device can often clear most problems causing Booster & Cleaner not working

2. Fix Booster & Cleaner Server issues & Internet Connection

1. Check network connection: An unstable Internet will make Booster & Cleaner be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
2. Disable VPN: VPN can cause connection errors and lead to Booster & Cleaner not working. Make sure all VPNs are off
3. Enable background data: When Background data is turned off, Booster & Cleaner may not be able to connect to the Internet when running in the background.