What to know about Apple's legal battle with Qualcomm

Cue the Tom Petty, because nobody's backing down in the Apple vs. Qualcomm legal battle.

On Tuesday, opening arguments from Apple and Qualcomm will begin in a federal court in San DiegoApple is suing Qualcomm for what it alleges are anti-competitive practices. Qualcomm says Apple needs to pay for its IP, without which the iPhone would not exist. Apple has sued Qualcomm for $1 billion, but billions more could be at stake.

The battle has been brewing for years. Here is everything you need to know about the case. 

How did this begin?

Beginning in 2011, Apple sold iPhones with Qualcomm chips inside that powered the device's connection to cellular networks. For years, Qualcomm was the exclusive chip provider for Apple. But then things got messy. Read more...