To fend off the latest cyberattacks, Android phone manufacturers claim they always stay on top of bug fixes and security patches. But in light of recent reports, you may not want to take their word for it. Researchers say some popular Android vendors have missed quite a few important patches.

For the past couple of years, Microsoft’s smartphones have been struggling to keep up with Android and Apple devices. Although Microsoft sells their handsets at lower price points and are constantly trying to improve user experience, the Windows Phone just isn’t cutting it in the consumer market.