It's good. There used to be a lot of problems on mobile phones. For example, sometimes watching videos suddenly pops up and pushes. After using the purifier, it is much better. I recommend this software, which has the functions of clearing memory, disposing of junk files and junk software, preventing the software from starting itself, waking up the other party and making the mobile phone run faster. The landlord can try it. The setup is very simple. This is a good software. There are also functions such as slimming, speeding up, shielding useless information, preventing background programs from waking up to each other, intercepting video pre-advertisements, game plug-in advertisements, and e-book APP advertisements. Oh, by the way, the new edition will be published soon, which will be more perfect than the previous edition.