Nokia N81 vs Nokia E61i
| Vormgeving | Slide | Bar-telefoon |
| Afmetingen | 102.00 x 50.00 x 17.90 mm | 118.00 x 70.00 x 13.90 mm |
| Gewicht | 140.00 g | 144.00 g |
| Schermgrootte | 2.40" | 2.80" |
| Scherm | Kleurrijk / TFT 16M kleuren 240 x 320 px (2.40") 167 ppi | Kleurrijk / TFT 16M kleuren 320 x 240 px (2.80") 143 ppi |
| Bescherming scherm |   | |
| Extra scherm | | |
| Secundaire bescherming scherm | | |
| Max. gesprekstijd | 2G: 240 min. (4.0 h) | 2G: 300 min. (5.0 h) 3G: 300 min. (5.0 h) |
| Max. standbytijd | 2G: 408 uur (17.0 dagen) | 2G: 408 uur (17.0 dagen) 3G: 456 uur (19.0 dagen) |
| Standaard batterij | Li-Ion 1050 mAhBuy powerbank | Li-Po 1500 mAhBuy powerbank |
| Snel opladen van de batterij | | |
| Draadloos opladen van de batterij | | |
| Intern geheugen | 12 MB | 60 MB |
| Geheugen kaarten |  microSD, microSDHC tot 8 GBBuy memory card | microSD tot 2 GBBuy memory card |
| Besturingssysteem | Symbian 9.2 | Symbian 9.1 |
| Interface | Series 60 3rd Edition | Series 60 3rd Edition |
| Processor | ARM11 | TI OMAP1710 |
| CPU-klok | 369 MHz | 220 MHz |
| GPU | - | - |
| Touchscreen | | |
| SAR | 0,96 W/kg | 0,9 W/kg |
| Dual SIM | | |
| Andere namen van deze telefoon | - | - |
| GSM standaard | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS standaard (3G) | 2100 | 2100 |
| LTE-standaard | | |
| CDMA standaard | | |
| TD-SCDMA-standaard | | |
| UMA standaard | | |
CAMERA'S - TERUG
| Eerste camera | | |
| Matrix | 2 Mpx | 2 Mpx |
| Schermresolutie | 1600x1200 px | 1600x1200 px |
| Optische zoom | | |
| Digitale vergroting | 20x | 4x |
| Flitser | LED | |
| Dual-color LED-flitser | | |
| Videoresolutie | 320x240 px | 352x288 px |
| Videoformaten | H.263, MPEG4 - 15 fps | MPEG4, H.263 |
| Extra | - | - |
CAMERA'S - VOORKANT
| Eerste camera | | |
| Schermresolutie | 320x240 px | nd |
| Optische zoom | | nd |
| Digitale vergroting | 2x | nd |
| Flitser | | nd |
| Dual-color LED-flitser | | nd |
| Videoformaten | H.263, MPEG4 - 15 fps | nd |
| Extra | - | nd |
SENSORS
| Accelerometer | | |
| Nabijheid | | |
| Licht sensor | | |
| Magnetometer | | |
| Gyroscoop | | |
| Barometer | | |
| Altimeter | | |
| Gravity sensor | | |
| Hall-effect sensor | | |
| Iris scanner | | |
| Vingerafdrukscanner | | |
| Thermometer | | |
| Hygrometer | | |
Gegevens transmissie
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA |  | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | classe 11 |
| EDGE | | |
| Bluetooth | v2.0 | v1.2 |
| Perfil A2DP | | |
| HDMI | | |
| WiFi | v802.11 b/g | v802.11 b/g |
| WiFi frequenties | 2,4 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi-hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATIE EN BERICHTEN
| Call waiting | | |
| Video conferentie verbinding | | |
| Redirect | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Predictive text | T9 | T9 |
| Swype | | |
| E-mailclient | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| QWERTY toetsenbord | | |
| RSS reader | | |
Multimedia
| Radio | | |
| MP3 bediening | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Geluidsformaten | AAC, AMR, M4A, MP4, MXMF, RA, WAV, WMA, eAAC+ | AAC, AAC+, AMR, M4A, MIDI, MP4, XMF, RA7, MIDI, eAAC+ |
| Ringtone polyfoon | 64 voice | 64 voice |
| Video beltonen | | |
| Beltoon componist | | |
| Spelletjes | | |
| Java | MIDP 2.0 | MIDP 2.0 |
| Videoverbinding | | |
| DVB-H televisie | | |
| TV aansluiting | | |
PIM EN EXTRA FUNCTIES
| Klok | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Valuta Converter | | |
| Organizer | | |
| Agenda | | |
| SyncML | | |
| Data en fax | | |
| Schermbeveiliging | | |
| Thema's | | |
| Verwisselbare cover | | |
| Speaker | | |
| Memorecorder | | |
| Trilalarm | | |
