It seems for all of the talk about the iPhone being a toy and not being ready for business it is certainly sturdier than its competition the RIM Blackberry.

Mobile Crunch has some numbers compiled by Squaretrade that show the iPhone is 50% less likely to have problems requiring repair or replacement after one year of ownership.

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The iPhone is twice as reliable as the Blackberry after one year of ownership, a new study by SquareTrade finds. SquareTrade, which sells extra warranties for cell phones and other devices, looked at the failure rates of 15,000 phones covered under its plans. The malfunction rate for iPhones after one year is 5.6 percent, compared to 11.2 percent for the Blackberry and 16.2 percent for the Treo.

The study projects that the failure rate for the iPhone after two years will be between 9.2 and 11.3 percent, compared to actual two-year failure rates of 14.3 percent for BlackBerries and 21.0 percent for Treos.