How effective is the battery replacement for iPhone performance?

The iPhone 6 with a new battery installed under the preferential replacement program can run up to twice as fast as with the old one. This is the conclusion Sandy Pell, manager of external communications of the Canadian company Vidyard. As he said, it was necessary to pay that money again to feel like the owner of the top smartphone.![4.jpg]
"I replaced my iPhone 6's battery for only $ 35 (service fees were in Canadian dollars)," says Pell. "It's worth admitting that he began to work much faster." In support of his words, Pell provided the results of testing the smartphone in Geekbench before and after replacing the battery.

Pella's words were partially confirmed by several independent users who turned to Apple for replacing the battery as part of the start-up campaign. According to them, after the service, the performance of their iPhone really increased, but not more than a third of the previous figures. Whether the battery wear is important in this case is unknown.