Iphone 4sAccelerometer, gyro, proximity, compass
Samsung Galaxy S IIIAccelerometer, gyro, proximity, compass,
barometerQUOTE
STMicroelectronics details pressure sensor in your Galaxy S III, can tell when you're mountaineering

If you're the sort to tear down your Galaxy S III, you might have noticed a mysterious STMicroelectronics LSP331AP chip lurking on the motherboard. While we've known that it's a pressure sensor, we now know that it's a new generation -- new enough that ST is just getting to explaining the technology to a mainstream audience.
The piezoresistor-equipped MEMS chip tracks altitude through atmospheric pressure with an uncanny knack for precision; it can tell when you've crossing between floors, which could be more than handy for future iterations of indoor navigation. Don't worry if you're an extreme sports junkie that might push the limits, either.
The sensor can do its job at the kinds of pressure you'd normally see when 32,800 feet high or 5,900 feet below sea level, which should keep it working even if you're checking your phone during a climb up K2 or a HALO skydive. We don't know if anyone beyond Samsung is lined up to use ST's pressure sensor in their devices, but we wouldn't be surprised if it becomes a mainstay for smartphones and outdoor gear in the near future.
Source:
http://www.engadget.com/2012/09/06/stmicro...r-galaxy-s-iii/Just goes to show samsung is going all out to compete with apple on the smartphone market share. ngom ngom ngom

Now that Samsung has raised the bar on tech offered, Apple is going to have to match suit =^-^=;
There is even an APP on googleplay market that can detect metal as well
https://play.google.com/store/apps/details?...ira.metal&hl=enAlthough i am not sure whether the S3 supports this feature or not :/
Anyway who knows, eventually maybe the smartphone would have evolved into a full fledge tricorder
QUOTE

In the fictional Star Trek universe, a tricorder is a multifunction hand-held device used for sensor scanning, data analysis, and recording data.
Three primary variants of the tricorder are issued in Star Trek's Starfleet. The standard tricorder is a general-purpose device used primarily to scout unfamiliar areas, make detailed examination of living things, and record and review technical data.
The medical tricorder is used by doctors to help diagnose diseases and collect bodily information about a patient; the key difference between this and a standard tricorder is a detachable hand-held high-resolution scanner stored in a compartment of the tricorder when not in use. The engineering tricorder is fine-tuned for starship engineering purposes. There are also many other lesser-used varieties of special-use tricorders.
The word "tricorder" is a portmanteau of "tri-" and "recorder", referring to the device's three default scanning functions: GEO (geological), MET (meteorological), and BIO (biological).
This post has been edited by Moogle Stiltzkin: Sep 6 2012, 06:16 PM