Geekbench finds a link between sluggish iPhone performance and battery age
GeekBench benchmarks confirm iPhone 7 Plus ships with 3GB of RAM, faster than 12.9" iPad Pro - 9to5Mac
iApplebytes confirms iOS 13.5.1 has a worse battery life, geekbench 5 battery test is a intensive test. On my iPhone 11 i got around 9-10hours of screen on usage and on geekbench
iPhone 6s and iPhone 6s Plus tidbits and first impressions
iOS 9's Lower Power Mode Reduces CPU by 40% to Save iPhone Battery Life • iPhone in Canada Blog
Benchmark after update (It's really bad) : r/iPhoneX
GeekBench 6 score between iPhone and Galaxy S23 is being questioned by users - SamNews 24