i-mobile TV 658 Touch&Move vs i-mobile 638CG
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| Design | |||
|---|---|---|---|
| Device type | Feature phone | Feature phone | |
| Form factor | Candybar | Candybar | |
| Dimensions | 4.37 x 2.20 x 0.51 inches (111 x 56 x 13 mm) | 4.45 x 2.01 x 0.57 inches (113 x 51 x 14.5 mm) | |
| Design features | Numeric keypad, Soft keys, D-Pad (2) |
| Display | |||
|---|---|---|---|
| Physical size | 3.0 inches | 2.4 inches | |
| Resolution | 240 x 400 pixels | 240 x 320 pixels | |
Pixel density
Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is. | 155 ppi | 167 ppi | |
Technology
Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays. | TFT | TFT | |
| Colors | 262 144 | 262 144 | |
| Touchscreen | Yes |
| Battery | |||
|---|---|---|---|
| Talk time | 4.00 hours the average is 10 h (626 min) | 8.30 hours the average is 10 h (626 min) | |
| Stand-by time | 12.5 days (300 hours) the average is 18 days (435 h) | 16.7 days (400 hours) the average is 18 days (435 h) | |
| Capacity | 1100 mAh | 1050 mAh | |
| Type | Li - Ion | Li - Ion |
| Hardware | |||
|---|---|---|---|
| Storage expansion | microSD | microSD |
| Camera | |||
|---|---|---|---|
| Camera | 8 megapixels | 3 megapixels | |
| Features | Face detection, Smile detection | ||
| Camcorder | Yes | Yes |
| Multimedia | |||
|---|---|---|---|
| Music player | |||
| Supported formats | MP3 | ||
| Video playback | |||
| Supported formats | MPEG4, 3GP | MPEG4, 3GP | |
| Radio | FM | FM | |
| Broadcast Mobile TV | Analog TV | Analog TV |
| Internet browsing | |||
|---|---|---|---|
| Browser | supports: supports: WAP | supports: supports: WAP |
| Technology | |||
|---|---|---|---|
CDMA
CDMA - Code Division Multiple Access. A technique of multiplexing, also called spread spectrum, in which analog signals are converted into digital form for transmission. For each communication channel, the signals are encoded in a sequence known to the transmitter and the receiver for that channel. The foremost application is digital cellular phone technology from QUALCOMM that operates in the 800MHz band and 1.9GHz PCS band. CDMA phones are noted for their excellent call quality and long battery life. | 800 MHz | ||
| GSM | 900, 1800, 1900 MHz | 900, 1800, 1900 MHz | |
| Data | EDGE | EDGE | |
| Multiple SIM cards | 2 slots | 2 slots | |
| Global Roaming | Yes | Yes |
| Phone features | |||
|---|---|---|---|
| Organizer | Calendar, Alarm | Calendar, Alarm, Calculator | |
| Messaging | SMS, MMS | SMS, MMS | |
JAVA
JAVA - J2ME (Java 2 Platform, Micro Edition) is a technology that allows programmers to use the Java programming language and related tools to develop programs for mobile wireless information devices such as cellular phones and personal digital assistants (PDAs). J2ME consists of programming specifications and a special virtual machine, the K Virtual Machine, that allows a J2ME-encoded program to run in the mobile device. | Yes | ||
| Games | Yes | Yes |
| Connectivity | |||
|---|---|---|---|
| Bluetooth | Yes | Yes | |
| Profiles | Advanced Audio Distribution (A2DP) | Advanced Audio Distribution (A2DP) | |
| USB | Yes | Yes |
| Other features | |||
|---|---|---|---|
| Notifications | Music ringtones (MP3), Polyphonic ringtones | Music ringtones (MP3), Polyphonic ringtones, Vibration | |
| Sensors | Accelerometer |
