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I am researching methods for detecting mobile devices. Let me preface this by stating that I already know about the WURFL file. One of the other options I am considering is maintaining a list of 'User Agent' header values in-house.

Has anyone seen these header values change for a specific device? I know new ones will pop up as new devices hit the market, but I am more concerned with existing values changing on me.

Derek Hunziker
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  • Could not understand the question clearly. Can you elaborate your question please? What is "user agent for a specific device", define "specific device" and give an example of it. Add your aim here too. Maybe you're doing it wrong. – ahmet alp balkan May 12 '11 at 23:03

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It is not clear what you are asking but; if a device/phone already on the market no it wouldn't change largely but you should expect change as phone/device gets service updates. goog think about is WURFL that it will try to match the device to a more generic model.

There may be 5 different iPhone 3 S but WURFL would match all as iPhone 3 S

It is hard work to maintain your own user agent list on your own.

nLL
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