«iPhone Q&A - Updated October 15, 2013». Վերցված է 2013 թ․ նոյեմբերի 13-ին. «The Geekbench benchmark pinpoints that the iPhone 4S uses the "Apple A5" processor like the iPad 2 models, but more specifically it uses a 1 GHz dual-core Apple A5 (S5L8940) processor of variable clockspeed, commonly "downclocked" to 800 MHz to conserve battery life.»
«iPhone 5s And 5c: Yes, Those Are Lower-Case». lifehacker. 2013 թ․ սեպտեմբերի 11. Վերցված է 2013 թ․ նոյեմբերի 13-ին. «Somewhat messily, Apple has now apparently decided the 4S should be lower case too ... However, Apple's own press release from today announcing the 8GB model retains the capital S, and that has been the dominant standard.»
