Nokia 6638 vs Nokia N72
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| Design | |||
|---|---|---|---|
| Device type | Smart phone | Smart phone | |
| OS | Symbian | Symbian (8.1) S60 2nd Edition, Feature Pack 3 | |
| Form factor | Candybar | Candybar | |
| Dimensions | 4.33 x 2.36 x 0.90 inches (110 x 60 x 23 mm) | 4.28 x 2.10 x 0.68 inches (109 x 53.5 x 17.5 mm) | |
| Weight | 4.58 oz (130 g) the average is 4.4 oz (125 g) | 4.37 oz (124 g) the average is 4.4 oz (125 g) | |
| Design features | Numeric keypad | Numeric keypad, Soft keys (2) | |
| Side Keys | Right: Camera shutter |
| Display | |||
|---|---|---|---|
| Resolution | 176 x 208 pixels | 176 x 208 pixels | |
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 | 65 536 | 262 144 |
| Battery | |||
|---|---|---|---|
| Talk time | 3.58 hours the average is 10 h (623 min) | ||
| Stand-by time | 10.8 days (260 hours) the average is 18 days (434 h) | ||
| Capacity | 1070 mAh | 970 mAh | |
| Type | Li - Ion | Li - Ion |
| Hardware | |||
|---|---|---|---|
| Built-in storage | 0.02 GB | ||
| Storage expansion | MMC | RS-MMC |
| Camera | |||
|---|---|---|---|
| Camera | 1.2 megapixels | 2 megapixels | |
| Flash | LED | ||
| Features | Exposure compensation, Burst mode, Night mode, Self-timer | ||
| Camcorder | Yes | 352x288 (CIF) | |
| Features | Video calling |
| Multimedia | |||
|---|---|---|---|
| Music player | |||
| Supported formats | MP3, AAC, AAC+, eAAC+, WAV, RealAudio 7, RealAudio 8, RealAudio 10, AMR, MIDI | ||
| Video playback | |||
| Supported formats | 3GPP | MPEG4, H.263, 3GPP | |
| Radio | FM | ||
| Streaming | Yes | Yes |
| Internet browsing | |||
|---|---|---|---|
| Browser | supports: supports: HTML, XHTML, WAP 2.0 | supports: supports: XHTML, WAP 2.0 |
| 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, 1900 MHz | ||
| GSM | 900, 1800, 1900 MHz | ||
| Data | EDGE | ||
| Global Roaming | Yes | ||
Positioning
Positioning - This field shows the positioning systems supported by the device. There are three main types: GPS, A-GPS and GLONASS. GPS - This is one of the most widespread global positioning technologies, developed and maintained by the U.S. government. It uses satellites in order to detect your location. Works best in clear weather. A-GPS - A-GPS stands for Assisted GPS and is the industry standard for positioning and navigation. “Assisted” means that it can use local wireless networks, in addition to satellites, for quicker and more precise localization. GLONASS - GLONASS is a global positioning system, developed by the Russian Federation. It’s very similar to GPS, but isn’t so popular in cell phones. | GPS |
| Phone features | |||
|---|---|---|---|
| Phonebook | Caller groups, Multiple numbers per contact, Picture ID, Ring ID | Unlimited entries, Multiple numbers per contact, Picture ID, Ring ID | |
| Organizer | Calendar, Alarm, To-Do, Calculator, Unit converter, Wallet | Calendar, Alarm, Calculator | |
| Messaging | SMS, MMS (T9), Predictive text input | SMS, MMS (T9), Predictive text input | |
| IMAP, POP3, SMTP | IMAP, POP3, SMTP | ||
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. | Midp 2.0 | ||
| Games | Yes | Downloadable |
| Connectivity | |||
|---|---|---|---|
| Bluetooth | 2.0 | ||
| Profiles | Basic Imaging (BIP), Dial-up networking (DUN), Handsfree (HFP), Headset (HSP), Object Push (OPP) | ||
| USB | Yes | USB 2.0 | |
| Connector | Proprietary | ||
| Other | Computer sync, Infrared, SyncML | Computer sync, SyncML |
| Other features | |||
|---|---|---|---|
| Notifications | Vibration, Phone profiles, Speakerphone | Music ringtones (MP3), Polyphonic ringtones (64 voices), Vibration, Phone profiles, Speakerphone | |
| Other | Voice dialing, Voice commands, Voice recording, TTY/TDD | Voice dialing, Voice commands, Voice recording, Push-to-Talk |
| Regulatory Approval | |||
|---|---|---|---|
FCC approval
FCC approval - The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions. Every wireless phone device that that is sold in the U.S. has to be tested and approved for sale by the FCC. | |||
| Date approved
Date approved - Shows the date when the particular phone is approved by the Federal Communications Commission | 26 Apr 2005 | 30 Mar 2006 | |
| FCC ID value: QMNRM-18 link | FCC ID value: QFXRM-180 link | ||
FCC measured SAR
FCC measured SAR - The exposure standard for mobile devices employs a unit of measurement known as the Specific Absorption Rate, or SAR. The SAR limit stated in the international guidelines is 2.0 W/ kg*. Tests for SAR are conducted using standard operating positions with the device transmitting at its highest certified power level in all tested frequency bands. Although the SAR is determined at the highest certified power level, the actual SAR of the device while operating can be well below the maximum value. | |||
| Head | 1.20 W/kg | 0.40 W/kg | |
| Measured in | 1900 MHz | 1900 MHz | |
| Body | 0.67 W/kg | 0.69 W/kg | |
| Measured in | 1900 MHz | 1900 MHz | |
| EU SAR | |||
| Head | 0.67 W/kg | 0.76 W/kg |
| Availability | |||
|---|---|---|---|
| Officially announced | 25 Apr 2006 |
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