While unlocked iPhones have been available for years in other countries, Apple has finally started selling them in America. An unlocked iPhone can be used on AT&T’s network without a 2-year plan, on T-Mobile with the slower Edge network, or taken overseas to use on other carriers. They will not work with CDMA carriers like Verizon. Other GSM carriers may also now be able to offer service to the owners of unlocked iPhones.
You’ll need to pay a premium for these unlocked iPhones with prices starting at $650. Models with a plan from AT&T or Verizon are cheaper as they have been subsidized by the carriers.
DropBox and services like it have become very important to Mac and PC users. If you have an iPhone or iPad, you can get the free DropBox app and have access to your files on your iOS device as well. You can view documents, of course. But you can also upload photos and even save email attachments.
If you are sending an email that has an image as an attachment, look at the bottom right corner of the message window in Mail before sending. If the image isn’t already small you will have options there to shrink the image before sending.