Pay attention to the list of the most suspicious apps you may come across in Google Play. Delete them from your phone immediately to protect your personal data and extend the life of your phone.
Their creators promise the apps will optimize your device, extend the life of your battery and protect your phone from viruses. Some of them are even supposed to be lie detectors and defragmentation devices. In fact, all they give you is ads, and what they do is get access to your data and kill your battery. Considering the huge number of apps created every single day, not even Google can keep track and check the safety of all the new programs. So the security of your device mostly depends on you!