Analysis of Platforms

iPod Touch 4g
Display

3.5-inch (diagonal) widescreen Multi-Touch display

960×640-pixel resolution at 326 pixels per inch

Processor

Apple A4 Processor

Sensors

Three-axis gyro

Accelerometer

Ambient light sensor

Capacity

8gb, 32gb or 64gb Flash Drive

Size and Weight

Height: 4.4 inches (111.0 mm)

Width: 2.3 inches (58.9 mm)

Depth: 0.28 inch (7.2 mm)

Weight: 3.56 ounces (101 grams))

Wireless

802.11b/g/n Wi-Fi (802.11n 2.4GHz only)

Bluetooth® 2.1 + EDR

Maps-location based service

Nike + iPod support built in

Battery and Power

Built-in rechargeable lithium-ion battery

Playback time

Music playback time: Up to 40 hours when fully charged

Video playback time: Up to 7 hours when fully charged

Charging times: Fast charge in about 2 hours (80% capacity), full charge in about 4 hours.

Information gathered from:

 http://www.iphoneheat.com/2010/09/ipod-touch-4g-specs/

iPhone 4g

Display

3.5-inch (diagonal) widescreen Multi-Touch display

960×640-pixel resolution at 326 pixels per inch

Processor

Apple A4 Processor

Sensors

Three-axis gyro

Accelerometer

Ambient light sensor

Capacity

16gb or 32gb Flash Drive

Size and Weight

Height: 4.5 inches (115.2 mm)

Width: 2.31 inches (58.6 mm)

Depth: 0.37 inch (9.3 mm)

Weight: 4.8 ounces (137 grams)

Wireless

802.11b/g/n Wi-Fi (802.11n 2.4GHz only)

Bluetooth® 2.1 + EDR

Maps-location based service

Nike + iPod support built in

GPRS, EDGE, 3G (HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps)

Battery and Power

Built-in rechargeable lithium-ion battery

Charging via USB to computer system or power adapter

Talk time: Up to 7 hours on 3G Up to 14 hours on 2G

Standby time: Up to 300 hours

Internet use: Up to 6 hours on 3G Up to 10 hours on Wi-Fi

Video playback: Up to 10 hours

Audio playback: Up to 40 hours

Information gathered from:

http://www.apple.com/iphone/specs.html