One of the best free file explorers on Android just received an update. ES File Explorer was acquired by another company not too long ago who has decided the app would be a great way to bring in some revenue with bloated features. The latest feature to be added to the free version of the app is the new "Charging Boost" feature which promises to increase your charge times by 20%.
Instead of increasing charge speeds Charging Boost actually just places ads on your lockscreen. The lockscreen covers your stock lockscreen and shows a battery indicator plus an ad. The ad is nearly impossible to click as you unlock your device. Some devices will have this enabled by default after the update while other devices will require you to enable the feature.
via Play Store