Bloomberg reports that, according to court testimony, Google paid Apple $1 billion in 2014 to remain the default search engine on iPhones.
A Google witness told an attorney for Oracle that the amount was 34% of revenue, but it wasn't clear if Apple or Google got that amount. In 2013, Morgan Stanley estimated Apple’s cut was 75% of revenue. Since Google was dropped in late 2014 as the default search engine for iOS’ Spotlight Search in favor of Microsoft’s Bing, Google’s payments may have fallen in 2015.
Google's attorney asked that the 34% figure be stricken from the record, but the judge presiding over the hearing refused to seal the information. According to Bloomberg, the information has "vanished without a trace" from electronic court records.