One of the most popular Google searches is "Where Can I Buy a Cell Phone Online" The answer is that there are many online stores where you can buy a cell phone.
Here is a list of the best places to shop at in order to get the best possible deal.
The most popular choice is to go directly to your carriers website, When doing so you will notice the prices are much cheaper then your local retail store.
Going to your carriers website is the most popular choice but it may not be the best because by doing so you are not able to compare different services.
For example if your looking for a new Blackberry on Verizon's website you may find a good deal but also AT&T may be running specials for a free Blackberry and you would never know.
Another popular choice is to check out a business that sells more then 1 carrier, this way you can compare plans and phones in order to get the best possible deal.
A good place to start is Best Buy because they sell 3 different wireless services which gives you the ability to do some comparison shopping.
The only downside to this is that huge electronics stores such as Best Buy do not specialize in only cell phones, so you may be able to compare services but they may not have the best prices available.
A common strategy is to browse the selection at Best Buy to find the phone you want then visit that particular carriers website to compare prices.