Pros: Fast malware scanning, protection against junk phone calls and SMS spam, anti-theft features
Cons: Subscription cost may not be worth the added features
But is it worth paying $30 a year for the Premium version of Norton? That's a more difficult call. As of yet, phishing hasn't been a serious problem for Android devices, so it's not clear whether that justifies the extra cost. Remote wipe will make you feel more secure, but given that you can remotely lock your phone with the free version, it doesn't add significant extra protection. And remote locate is only as useful as the location capabilities of your phone. The SMS and phone blocker are useful, but that depends on whether you've been targeted with spam (and how many of your callers you're trying to avoid). So it's really up to you as to whether all that adds up to a worthwhile $30 per year.
However, one thing is clear: In an increasingly unsafe world for mobile devices, the free version of Norton Mobile Security is a no-brainer.
Preston Gralla is a contributing editor for Computerworld.com and the author of more than 35 books, including How the Internet Works (Que, 2006).