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. While cell phone networks are constantly being upgraded and expanded, analysts say customer complaints have helped drive improvements over the last few years. iPhone customers were particularly vocal, with some complaining that the existing AT&T network didn't provide enough coverage, speed, or reliability to meet their needs. "AT&T simply didn't have capability to keep up with demand.
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