1. History
1.1. Mobile phone
1.2. PDA
1.3. Palm
2. Specification
2.1. Phone Call
2.2. Internet
2.3. LCD Touchscreen
2.3.1. Resolution
2.3.2. Multitouch
2.3.3. Size
2.4. Processor
2.5. Camera
2.5.1. Rear
2.5.2. Front
2.6. Platform
2.6.1. IOS
2.6.2. Android
2.7. Memory & Storage
2.7.1. Internal
2.7.2. Card Slot
2.8. Connectivity
2.8.1. WiFi
2.8.2. Bluetooth
2.8.3. NFC
2.8.4. USB
2.9. Fingerprint
2.10. Sound
2.11. Sensor
2.11.1. Gesture
2.11.1.1. Hand movements
2.11.1.2. Infrared rays
2.11.2. Proximity
2.11.2.1. Mobile located near the user
2.11.2.2. Infrared rays
2.11.3. Gyro
2.11.3.1. Phone rotation state
2.11.3.2. Three Axes
2.11.4. Accelerometer
2.11.4.1. Phone Movement state
2.11.4.2. Three Axes
2.11.5. Geomagnetic
2.11.5.1. Magnetic field intensity
2.11.5.2. Three Axes
2.11.6. Temperature Humidity
2.11.6.1. Temperature
2.11.6.2. Humidity levels
2.11.7. Barometer
2.11.7.1. Atmospheric pressure
2.11.7.2. User's current location
2.11.8. Hall
2.11.8.1. Cover is open or closed
2.11.9. RGB Light
2.11.9.1. Red, Green, Blue and white intensity
2.11.9.2. Light source