Under scrutiny is a deal in which Google pays Apple billions of dollars to be the default search engine on the iPhone's browser and other settings.
Google could pay Apple as much as $19 billion this year, according to an estimate from Bernstein.
Cue, who negotiated the deal with Google from Apple's side, is expected to testify that Apple picked the Google search engine as an iPhone default because it was the best product.
He's also expected to say that Apple doesn't see a reason to create a new Apple search engine because Google already exists, according to a person familiar with Cue's anticipated testimony.
"I think their search engine is the best," Apple CEO Tim Cook said when asked about using Google as the iPhone's default search engine in 2018.
Persons:
Bernstein, He's, Cue's, Microsoft Bing, Tim Cook
Organizations:
Apple, U.S . Department of Justice, Google, Yahoo, Microsoft