With smartphones becoming more and more PC like, it is also picking up some of the PC's bad habits: malware.
With an Android based trojan already floating around (a warning to those that download dodgy apps not from one Android Market or one of the other well known app stores), Trend Micro says that Android phones are particularly more vulnerable to this type of thing.
Trend Micro may already have an anti-virus app for Android available to buy for $3.99, but their claim about iOS being more secure does have merit.
Apple's iOS is a closed system that is more tightly controlled and managed by Apple. Apple's strict guidelines on apps means it's harder for malware to get in, although not impossible. Google's Android, on the other hand, is a much more open system, and the fact that there are unofficial apps stores, and that people can simply download apps and install straight to their phone from their PCs, means the risk is a always bit greater.
As always, the best advice is to take more notice of what you download and install. And keep backups of your messages and contacts, just in case!