iPhone 4 owners who purchased on or soon after launch day last year (June 24, 2010) will soon see their factory warranties expire. Warranties on most Apple products are good for one year.
Current iPhone 4 owners can look up exactly when their warranty is up can do so at Apple's Support site, simply by entering their iPhone serial number on Apple's website. That online form will tell you exactly when your warranty expires.
That date is notable as its the last chance customers are able to purchase AppleCare for their iPhone 4. For $69, AppleCare extends the original iPhone factory warranty to two years total and includes unlimited phone support. The one year anniversary is more notable this year as Apple has not introduced a new iPhone to take the iPhone 4's place.
While the merits of any extended warranty are always up for debate, if you're interested, the process to buy AppleCare can be done entirely online, as long as the original factory warranty hasn't expired. In the past, Apple has been known to offer warranty coverage to users for a limited time after the factory warranty expires, but generally not for more than a few weeks.
