Nokia N81 Features and Secret codes

Features:

• GSM 850 / 900 / 1800 / 1900.
• Dimensions: 102 x 50 x 17.9 mm, 86 cc.
• Weight: 140 g.
• Display :Type TFT, 16M colors , Size: 240 x 320 pixels, 2.4 inches.
• Ringtones :Type Polyphonic (64 channels), Monophonic, True Tones, MP3.
• Customization.
• Vibration: Yes.
• Memory.
• Phonebook: Practically unlimited entries and fields, Photocall.
• Call records: Detailed, max 30 days.
• Card slot: microSD (TransFlash), up to 8GB, hotswap, 2 GB card included.
• 12 MB user memory.
• 96 MB SDRAM memory.
• ARM 11 369 MHz processor.
• GPRS: Class 10 (4+1/3+2 slots), 32 - 48 kbps.
• HSCSD: Yes.
• EDGE: Yes.
• 3G: Yes, 384 kbps.
• WLAN.
• Wi-Fi :802.11b/g.
• Bluetooth: Yes, v2.0.
• Infrared port: No.
• USB: Yes, v2.0.
• OS: Symbian OS 9.2, Series 60 v3.1 UI.
• Messaging: SMS, MMS, Email, Instant Messaging.
• Browser.
• WAP 2.0/xHTML, HTML.
• Games: Yes.
• Java.
• Colors: Cobalt blue, Graphite grey.
• Camera: 2 MP, 1600x1200 pixels, video(QVGA 15fps), flash.
• secondary CIF videocall camera.
• Java MIDP 2.0.
• MP3/AAC/MPEG4 player.
• Stereo FM Radio.
• T9.
• Push to talk.
• Voice dial/memo.
• Calendar.
• To-do list.
• 3.5 mm audio output jack.
• Built-in handsfree.
• Battery :Standard battery, Li-Po 1050 mAh.
• Stand-by: Up to 410 h.
• Talk time: Up to 4 h.

Secret Codes:

• *#0000# To view Firmware version.
• *#06# :To view Serial number IMEI (International Mobile Equipment Identity).
• *#2820# To view Bluetooth device address.
• *#62209526# : To view the MAC address of the WLAN adapter.
• *#92702689# (*#WAR0ANTY#) To view the life timer information. The total time of phone calls in minutes.
• Note: All old data will be lost when hard reset is used.
• Soft reset (*#7780#) :It restores ini files from rom but preserves user data .The phone will ask you a confirmation, enter a security code (12345 by default).
• Deep Reset (*#7370#) : This reformats completely the C: drive. All applications and files stored on this drive will be lost and clean default files will be rewritten. The phone will ask you a confirmation and enter a security code (12345 by default).
• There is another key combination which is used to hard reset the phone (similar to #*7370#).
• It is useful in some cases when the phone cannot reboot.
• By switching off the phone then press and hold Call key + * key + 3 key + power button for a couple of seconds.
  

Note all the codes will necessary work with every phone model and use at your own risk.