Rich Karpinksi

3G or 4G? WiMax, LTE or HSPA+? With so many options in the smartphone market, it's hard to know which is the best device on the best network at the best price.

Startups large and small have sprung from downturns. Here's how they've managed.

As mobile data plans move to a pay-per-use model, you and your business will have to learn to work around them.