Samsung Electronics’ Galaxy S4 is the fastest smartphone among the best-selling brands in the market, according to a test by U.K.’s watchdog released on Tuesday.

The organization named ”Which?“ used a speed-testing system called Geekbench to evaluate the processing and memory speed of seven representative cell phone brands.

Galaxy S4, ranked at the top, scored 3,188 points while Apple’s iPhone5 scored 1,664, ranking at the bottom with its score barely reaching half that of Samsung.

“If a phone has a high Geekbench score it will perform well when photo-editing, running graphically intensive games and multi-tasking across numerous apps in general,” said a member from the organization. 

“Undoubtedly, Apple will upgrade its next iPhone with an improved processor when it launches later this autumn,” he added.