Do y'all have a security app installed on your phones? If so, which one? Being new to Android, I was wanting to get some insider's opinions on which are the most effective. I'm currently using NetQin Mobile Security Pro. Any thoughts on this app? (I chose this one because it was free and had good reviews in the market.) I know AVG's reputation for being a quality free security program in the computer market. Is their mobile security app as highly regarded? (Had I seen this before I had already installed NetQin, I more than likely would have chosen this one.) Also, I'm looking for an internet firewall that doesn't require a root. All of the firewalls I've found either require root or are only for blocking calls and SMS/MMS.