A recent study from ChangeWave Research indicates that consumers who purchased an iPhone 4S are “very satisfied” with the device overall. The study that surveyed 215 iPhone 4S owners also indicated that the interactive voice command assistant, known as Siri, was the most popular feature on the updated phone.

Overall iPhone 4S customer satisfaction ratings show a high degree of approval – with 77% of owners saying they’reVery Satisfied and 19% Somewhat Satisfied with their new iPhone. Only 2% of owners say they are Unsatisfied with it.

Siri Ranks as #1 Feature. We also asked iPhone 4S owners about the specific features they like best about their new smart phone, and by a wide margin the Siri Digital Assistant (49%) ranks number one.

When it comes to mobile software, another survey found that Google’s Android system comes in at #1 for customer satisfaction among current smartphone users. Windows OS was second, and Blackberry was 3rd.

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