A Systematic Review of Healthcare Applications for Smartphones

Table 2 Smartphone Operating-System Platforms, Features Support with Hardware

OS Platform →	SymbianOS[158]	Palm Web OS[159, 160]	WindowsPhone[161]	BlackBerry[162, 163]	iOS[164–166]	Android[140, 167]
Touch screen	✓^*	✓	✓	✓	✓	✓
Multi-touch UserInterface	✓	✓	✓	✓	✓	✓
Virtual Keyboard	✓	✓	✓	✓	✓	✓
External Keyboard	✓	✓	✓	✓	✓	✓
Camera	✓	✓	✓	✓	✓	✓
Video Recording	✓	✓	✓	✓	✓	✓
Video Calling	×	×	×	×	✓^*	✓^*
USB Interface	✓	✓	✓	✓	✓	✓
Voice Command	✓	×	✓	✓	✓	✓
Tethering	✓	✓	×	✓	✓	✓
Multicore ProcessorSupport	×	✓^*	×	×	✓^*	✓^*
Accelerometer	✓^*	✓	✓	✓	✓	✓
Gyroscope	×	×	✓	×	✓	✓
Switch ScreenOrientation	✓	✓	✓	✓^*	✓	✓
GPS	✓	✓	✓	✓	✓	✓
Bluetooth	✓	✓	✓	✓	✓	✓
Built-in BluetoothHealth Device Profile	×	×	×	×	×	✓
WiFi	✓	✓	✓	✓	✓	✓
3G/4G	3 G	4 G	3 G	3 G	4 G	4 G

This table compares the support of features by six smartphone OS platforms with the availability of hardware in the device.
✓ This feature is supported by the OS platform.
× This feature is not supported by the OS platform.
✓^* This feature is supported in a limited number of devices.

ISSN: 1472-6947