Smartphone

1. Data and Access

1.1. Wifi

1.2. Cloud

1.3. 4G network

1.4. Wifi hotspot

1.5. Memory Card

1.5.1. Full SD card

1.5.2. Micro SD card

2. Audio

2.1. MP3 Player

2.2. Speakers

2.2.1. Surround Sound

2.2.2. Front Speaker

2.2.3. Back Speaker

2.3. Ringtones

3. Apps

3.1. Social Network

3.1.1. Twitter

3.1.2. Facebook

3.2. Banking

3.3. Games

3.4. Calendar

4. Aesthetics

4.1. Screen Size

4.2. Shape

4.3. Color

5. Usability

5.1. Battery Life

5.2. Charging

5.2.1. Wireless Charging

5.2.2. Universal Charger

5.2.3. Standard Plug-In Charger

6. Communication

6.1. Texting

6.2. Calling

6.2.1. Bluetooth

6.3. Email

6.4. Social Network

6.4.1. Facebook

6.4.2. Twitter

7. Physical Features

7.1. Keyboard

7.1.1. Touch

7.1.2. Physical

7.1.3. Virtual

7.2. Port

7.2.1. Micro USB

7.2.2. Full USB

7.2.3. HDMI Output

7.2.4. Universal

7.3. Screen

7.3.1. Touch

7.3.1.1. Finger proof

7.3.2. Non-Touch

7.4. Camera

7.4.1. Still

7.4.2. Video

7.4.3. 3D

7.5. Other

7.5.1. Flashlight

7.5.2. Laser pointer

7.5.3. Projector