1. mobile
1.1. ringtone
1.1.1. true tone
1.1.2. basic mobile tone
1.1.3. polyphonic ring tone
1.2. handsfree
1.2.1. wired
1.2.1.1. mono
1.2.1.2. stereo
1.2.2. bluetooth
1.2.2.1. stereo
1.2.2.2. mono
1.3. speakerphone
1.4. buttons
1.4.1. hard touch
1.4.2. soft touch
1.4.3. touchscreen based
1.4.4. rotating
1.5. network
1.5.1. gsm
1.5.2. cdma
1.5.3. 3g
1.5.4. 4g
1.6. sim card
1.7. touchscreen
1.8. display icons
1.9. features
1.9.1. mp3
1.9.1.1. songs
1.9.1.2. tones
1.9.2. fm
1.9.2.1. channels
1.9.3. gps
1.9.3.1. maps
1.9.3.2. postions
1.9.4. gprs
1.9.4.1. internet / browsing
1.9.4.2. chat
1.9.4.3. photo sharing
1.9.4.4. bloging
1.9.4.5. email
1.9.5. touchscreen
1.9.5.1. apps
1.9.5.2. games
1.9.6. dual sim
1.9.7. dual network : gsm / cdma
2. netbook
2.1. OS
2.1.1. windows
2.1.2. linux
2.1.3. mac
2.2. CD/DVD
2.2.1. Reader
2.2.2. writer
2.3. Screen
2.4. Harddisk
2.5. Ram
2.6. webcam
2.7. keyboard with trackpad
2.8. Network support
2.8.1. 4G support
2.8.2. gsm/cdma mobile sim adapter
2.8.3. wifi
2.8.4. lan
2.8.5. bluetooth
3. Laptop
3.1. Network support
3.1.1. wifi
3.1.2. lan
3.1.3. bluetooth
3.2. webcam
3.3. keyboard with trackpad
3.4. Ram
3.5. Harddisk
3.6. OS
3.6.1. windows
3.6.2. linux
3.6.3. mac
3.7. CD/DVD
3.7.1. Reader
3.7.2. writer