It's a rivalry that's arguably more intense inside the courtroom than in stores.
The legal fight between Apple and Samsung is coming to a close in the U.S., as a jury will soon decide which of the tech giants has a better case.
Apple says Samsung ripped off the iPhone and iPad. Samsung says Apple wouldn't have been able to make those products without infringing on Samsung's wireless patents.
To break it all down, we spoke to Nilay Patel - who isn't just the Managing Editor of tech site The Verge, but also a former copyright attorney.