Q: how to transfer contacts and massages from iphone to computer

Contacts can be synced to a supported application on the computer such as Address Book, Windows Contacts, Outlook. Or they can be synced to iCloud or other cloud service.

Messages are kept in the iPhone backup. You would have to look into a 3rd party software program to download them from the phone to the computer, outside of the backup.

Contacts are designed to be synced with a supported address book app on your computer. This can be done with a free Apple iCloud account without syncing direct with your computer or direct with your computer with iTunes.

There are some 3rd party utilities that provide for exporting your text messages from your iPhone's backup on your computer or direct from your iPhone to your computer for reading the messages on your computer. Here is one such utility.

http://www.macroplant.com/iexplorer/tutorials/how-to-save-and-export-sms-and-ime ssages.php

Hi, Shahmeer23c

iCloud is useful for a lot of things and backing up your iPhone's data is one of them. Included in the data and files that you can safely keep using iCloud are your contacts. The following instructions detail how to transfer contacts from iPhone to computer.

Step 1. On your iPhone, tap on Settings. On the "Settings" menu, select "iCloud". You will then be taken to the iCloud Settings.

Step 2. Enable the "Contacts" setting and should you be informed that you'll have to merge your contacts to iCloud, tap "Merge".

Step 3. Now on your computer, go to iCloud.com and login with your iCloud credentials.

Step 4. Once you're logged in, click on the Contacts icon to access your address book and all iCloud features for the contacts you've uploaded.

Step 5. In the address book, click on the cog icon at the lower-left portion, click "Select All", and "Export vCard" afterwards. 

Step 6. iCloud will then give you a vCard that you can store on your computer. It contains all the contacts you've uploaded to iCloud using your iPhone.