According to a recent research survey, iPhone 4s are the most reliable smartphones, while still being the most prone to accidental damage. Third-party warranty provider SquareTrade looked at their SquareTrade Care Plan database and analyzed failure rates of over 50,000 smart phones covered by the company's Care Plans, finding that the iPhone 4 had the least malfunctions but was the most susceptible to accidents. The study also showed that all manufacturers improved their failure rate since the first such study in 2008.

SquareTrade looked at four months of iPhone 4 warranty claims, eight months of claims from Motorola and HTC owners, and a year of iPhone 3GS claims, then extrapolated a 12-month failure rate - excluding accidental damage - for all devices. The iPhone 4 device was the most reliable with only 2.1% of the owners reporting a malfunction, followed closely by iPhone 3GS...

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