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I want to know how many (number of ) SMS and Contact details can be stored in an iPhone 3gs and iPhone 4.

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Not an exact answer: I kept almost 2,000 messages on my old 3G. Thought the info might be useful for you. – Tuan Anh Tran Jan 14 '12 at 17:43
up vote 4 down vote accepted

As far as I remember there used to be a limit in early iPhones on early software, something around 2000? But I don't think there is a limit these days.

Text messages are stored in SQLite database which has very, very large limits of number of rows. I managed to store over 3000 messages on my iPhone 3G.

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thanks for this information – V.V Mar 24 '11 at 8:39
so there is no way that the messages would have been deleted by the iPhone? – Carrie Jan 14 '12 at 12:46
I am not aware of any reason why iPhone on its own would do such thing. – Michal M Jan 15 '12 at 10:52

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