★★★★★The best security app You've ever used

CY Security is a FREE mobile security app for Android, which protects your phone and tablet from viruses like trojan, malware and spyware. Moreover, it’s not only the android antivirus, but also a powerful phone cleaner and speed booster, so you can optimize your phone and keep it safe, clean and fast using only one tool!

The best antivirus and mobile protection:
► Smart & Secure – World’s No.1 antivirus engine, which will protect your mobile from 360 degrees and 24/7. No a single virus can get into your mobile;
► Light & Powerful - The smallest installer size will save the storage space of your phone for your needs;
► Fast & Accurate - After antivirus scanner will complete the first scan, it will only take 30 milliseconds to scan an app;
► Simple & Convenient – The user interface of CY Security Antivirus is very easy to use, which will provide you a nice experience using our android antivirus;

Install and experience free antivirus CY Security now and:
✔ Scan for viruses, trojans, malware and spyware to keep your phone & tablet safe and secu re;
✔ Optimize your phone cleaning it from malware residual junk, useless apk and adware files;
✔ Boost your Android and free up RAM of your phone by killing background tasks, that slow down your device;
✔ Reduce CPU usage and extend the battery life of your phone!

Main Features of CY Security Antivirus
The Best Antivirus Scanner & Mobile Protection
► Smart Anti-virus Engine - We use the most intelligent antivirus engine in the world, so no virus will get into your phone or tablet;
► Real-time protection – CY Security android antivirus will detect virus and block malware invasion in real time, keep your phone secure from 360 degrees and 24/7;
► One-key Scan - We have integrated virus scan and security settings to provide permanent free protection to your phone;
► SD Card Scan – Scan your SD Card for harmful viruses, trojans, and other harmful files and malware.

Phone Cleaning
► System Cleaner - By scanning the cache space, installers, empty folders and thumbnails in your phone, our software will be able to clear useless files, release more storage space and make your phone and tablet run faster;
► Junk Files Cleaner: Clear residual files to reclaim your storage of your phone;
► Caches Cleaner: Clear cache and speed up phone;
► Useless apks: Find and delete useless apk on your phone to free up more storage space;
► Residual Files: Clear residual data from previously uninstalled applications;
► Adware Cleaner: Delete junk files from Android adware and malware;
► Task Ignore List: Add important apps to the task ignore list, if you want them to keep running during the memory scan process. You also can easily remove them from the ignore list.

Phone Performance Optimization
► Speed Booster: Free up RAM and boost memory of your android phone by killing redundant background tasks ( background running progress). Your mobile will run faster;
► Battery Saver: Reduce CPU usage and extend the battery life of your phone;
► One-click boost: Add CY Security Boost widget to the homepage of your phone and boost memory of your mobile with one tap!

❤ Keep your phone safe, clean and fast with free antivirus from CY Security and stay connected!
CY Security in Google+: https://plus.google.com/u/0/communities/101453597809857056718
CY Security in Facebook: https://www.facebook.com/phonecleandev/

Our goal is to provide the best security protection for your phone! Try CY Secu rity antivirus scanner right now and keep your phone clean, fast and secure!

Recent changes:
Remove lockscreen according to the Google Policy.
**NOTES** Need the android SYSTEM_ALERT_WINDOW permission for both new users and upgrade users, please accept the permission requirement. Thanks:)