Här är lite spec om vad som finns i iPhone
Processor:
http://www.arm.com/products/CPUs/ARM1176.html
ARM1176JZF chip with TrustZone (enables trusted computing environment for media, apps, network, OS, etc. -- very bad for hackers)
Can vary in clock speed up to 700MHz or more, depending on implementation (thanks, Nigma)
ARM Intelligent Energy Manager (claimed to reduce power consumption 25-50% in portables)
16K / 16K cache
Features vector floating point coprocessor ("for embedded 3D-graphics")
ARM Jazelle enabled for embedded Java execution (hmm...)
SIMD, high perf integer CPU (8-stage pipeline, 675 Dhrystone, 2.1 MIPS)
0.45 mW/MHz power draw (with cache)
FirmWire för iPhone finns lite överallt för er som vill börja hacka ...