Karbonn KT21 Express vs Karbonn K 1818
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| Design | |||
|---|---|---|---|
| Device type | Feature phone | Feature phone | |
| Form factor | Candybar | Candybar | |
| Dimensions | 4.20 x 2.14 x 0.50 inches (106.6 x 54.3 x 12.7 mm) | ||
| Weight | 3.35 oz (95 g) the average is 4.4 oz (126 g) | ||
| Design features | Numeric keypad | ||
| Side Keys | Left: Camera shutter | ||
| Colors | Brown |
| Display | |||
|---|---|---|---|
| Physical size | 2.8 inches | 3.2 inches | |
| Resolution | 240 x 240 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. | 106 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 | ||
| Colors | 262 144 | ||
| Touchscreen | Capacitive, Multi-touch | Yes | |
| Features | Proximity sensor |
| Battery | |||
|---|---|---|---|
| Talk time | 4.00 hours the average is 10 h (626 min) | ||
| Stand-by time | 20.8 days (500 hours) the average is 18 days (435 h) | ||
| Capacity | 1000 mAh | 1000 mAh | |
| Type | Li - Ion | Li - Ion |
| Hardware | |||
|---|---|---|---|
| Storage expansion | microSD, microSDHC up to 32 GB | microSD, microSDHC |
| Camera | |||
|---|---|---|---|
| Camera | 3.2 megapixels | 3.2 megapixels | |
| Flash | Yes | ||
| Features | Digital zoom | ||
| Camcorder | Yes | Yes |
| Multimedia | |||
|---|---|---|---|
| Music player | |||
| Supported formats | MP3 | MP3, WAV, AMR, MIDI | |
| Video playback | |||
| Supported formats | MPEG4, AVI, 3GP | ||
| Radio | FM, Recording option | FM, Recording option | |
| Speakers | Loudspeaker | Earpiece |
| Internet browsing | |||
|---|---|---|---|
| Browser | supports: supports: WAP | Opera Mini 6, supports: supports: HTML, WAP | |
| Built-in online services support | Facebook, YouTube (upload) | Facebook, Twitter |
| Technology | |||
|---|---|---|---|
| GSM | 900, 1800 MHz | 850, 900, 1800 MHz | |
| Data | EDGE, GPRS | EDGE | |
| Multiple SIM cards | 2 slots | ||
| Global Roaming | Yes |
| Phone features | |||
|---|---|---|---|
| Phonebook | 2000 entries | 2000 entries | |
| Organizer | Calendar, Alarm, To-Do, Calculator, Currency converter, World clock, Stopwatch, Health management | ||
| Messaging | SMS | SMS (1000 messages), MMS, Predictive text input | |
| Yes | Yes | ||
| Instant Messaging | Yahoo! | Windows Live / MSN, Skype | |
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 | Yes |
| Connectivity | |||
|---|---|---|---|
| Bluetooth | Yes | Yes | |
| Profiles | Advanced Audio Distribution (A2DP) | ||
| USB | Yes | ||
| Headphones connector | 3.5mm | 3.5mm | |
| Other | Tethering, Computer sync |
| Other features | |||
|---|---|---|---|
| Notifications | Music ringtones (MP3, AMR, MIDI), Polyphonic ringtones (64 voices), Vibration, Speakerphone |
