This is the user manual for the Apple Iphone 3. Its a much better version of the phone than the Iphone 2 however this is still excellent value for money even in the second hand mobile phone market. Consider upgrading your mobile phone for more features.
The owners manual for the Iphone 3 has been listed below so you know how to operate the phone. If you have any questions then ask Apple for more technical information which the manual might not provide. For iPhone OS 3.1 Software
Note the manual below as it should show you all the settings you will need to know from your Iphone.
Apple iPhone 3 User Guide for Apple iPhone 3.1