"No major cell phone has a 'virus' problem in the traditional sense that Windows and some Mac machines have seen,"
Mac? Is that a joke? I've used Macs since the late 'seventies - never had a virus, never used an antiviral program. And believe me, I go where mortals fear to tread on the Web. Security is built into the Mac OS from the ground up; it's a grownup's OS, not one made by kids in a high school lab in Seattle.
Reminds me of the anecdote about the farmer who, plagued with rats, decided to buy a cat. The rats, alarmed, had a meeting. They decided to tell the farmer that if he wouldn't buy a cat they wouldn't buy a cat. Good idea; you don't get an antiviral for your Android and I won't get one for my iPhone, iPad and eight Macs. We'll see who comes out on top.