Next Generation Cell Networks New systems could improve service for those with old and new smart phones.

As cell phones take on more and more features, wireless carriers are struggling to keep up with data demands.

Whether wireless customers are watching videos on YouTube or uploading puppy pictures to Facebook, they want reliable speed. Upgrading the network is essential to meeting the needs of these customers, and each wireless carrier has its own plan of attack. Some are upgrading their existing third generation (3G) networks with better software before moving on to next generation networks. Others already have fourth generation (4G) networks up and running. In addition to transmitting high-definition video, these networks could alleviate traffic problems on existing networks, making service better for everyone--even folks who don't plan on buying a new 4G-enabled device.

According to AT&T spokesperson Seth Bloom, wireless data traffic grew nearly 7,000 percent between the third quarter of 2006 and the third quarter of 2009. "We've been working tirelessly to support this growth," Bloom says.

In 2008 and the first three quarters of 2009, AT&T invested approximately $19 billion on its wireless network. "We know there is work to be done, especially in New York and San Francisco. We have a plan to improve the experience; we are implementing the plan, and we are confident that it will work."