iPhone 4s - Wikipedia
iFixit iPhone 4S teardown confirms 512MB RAM, updated baseband | Ars Technica
Apple iPhone 4s specs - PhoneArena
Apple iPhone 4S Reportedly Comes with 512MB RAM (Again) - HardwareZone.com.sg
RAM® Form-Fit Cradle for Apple iPhone 4 & 4S – RAM Mounts
iPhone 4s - Full Phone Information, Tech Specs | iGotOffer
Notes From iFixit's iPhone 4S Teardown: 512 MB of RAM, New 3G Chip - MacStories
iPhone 4S has 512MB RAM, claims Infinity Blade's developer
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iPhone 4s - Full Phone Information, Tech Specs | iGotOffer
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iPhone 4s Users May Want to Avoid iOS 8 Due to Performance and Screen Size Issues - MacRumors
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Apple iPhone 4s specs - PhoneArena
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Apple iPhone 4s - Full phone specifications
iPhone 4s - Wikipedia
