Syncing your iPhone with your computer will allow you to transfer music from your computer system to your handheld device.
If you do not sync your iPhone regularly, the syncing process will take a long time, especially if you download large amounts of content or install apps on a weekly basis.
However, storing messages online by syncing your phone to an online account is one way to read your texts online.
If you experience any problems with iTunes or syncing your iPhone, click the restore icon on your iTunes summary screen.
Syncing your iPhone also gives you an opportunity to discover any errors on your iPhone and correct them before they cause more serious problems.