I have a Samsung Galaxy Luna model number: SM-S120VL I purchased through Straight Talk Wireless. I'm curious, because I know in the past I've installed suspicious applications containing malware. What effects on device hardware would malware pose a risk? I've performed a factory/hard data reset multiple times, and even in the reboot stage, during device set up, it will slightly lag. What could be the underlying problem (If any)? Which hardware can be affected by malicious installations, accidental tapping of adware, or even from visiting a malicious website?