BenQ-Siemens C81 vs Siemens C65
| Vormgeving | Bar-telefoon | Bar-telefoon |
| Afmetingen | 104.00 x 46.50 x 17.70 mm | 105.00 x 45.00 x 16.00 mm |
| Gewicht | 90.00 g | 86.00 g |
| Schermgrootte | 1.80" | - |
| Scherm | Kleurrijk / TFT 256k kleuren 132 x 176 px (1.80") | Kleurrijk / CSTN 64k kleuren 128 x 128 px |
| Bescherming scherm |   | |
| Extra scherm | | |
| Secundaire bescherming scherm | | |
| Max. gesprekstijd | 2G: 300 min. (5.0 h) | 2G: 300 min. (5.0 h) |
| Max. standbytijd | 2G: 300 uur (12.5 dagen) | 2G: 250 uur (10.4 dagen) |
| Standaard batterij | Li-Ion 820 mAhBuy powerbank | Li-Ion 600 mAhBuy powerbank |
| Snel opladen van de batterij | | |
| Draadloos opladen van de batterij | | |
| Intern geheugen | 23 MB | 10.5 MB |
| Geheugen kaarten |  RS-MMC | |
| Processor | - | ARM9 |
| CPU-klok | - | 101 MHz |
| GPU | - | - |
| Touchscreen | | |
| SAR |  | 0,73 W/kg |
| Dual SIM | | |
| Introductiedatum | II. kwartaal 2006 | |
| Andere namen van deze telefoon | - | - |
| GSM standaard | 900 1800 1900 | 900 1800 1900 |
| UMTS standaard (3G) | | |
| LTE-standaard | | |
| CDMA standaard | | |
| TD-SCDMA-standaard | | |
| UMA standaard | | |
CAMERA'S - TERUG
| Eerste camera | | |
| Matrix | 1.3 Mpx | 0.1 Mpx |
| Schermresolutie | 1280x960 px | 352x288 px |
| Optische zoom | | |
| Digitale vergroting | 5x | |
| Flitser | | |
| Dual-color LED-flitser | | |
| Videoformaten | MPEG4, H.263 | nd |
| Extra | - | - |
CAMERA'S - VOORKANT
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 | | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | classe 10 | classe 10 |
| EDGE | classe 10 | |
| Bluetooth | | |
| HDMI | | |
| WiFi | | |
| WiFi frequenties | | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi-hotspot | | |
| IrDA | | |
| USB | v2.0 | |
| GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATIE EN BERICHTEN
| Call waiting | | |
| Video conferentie verbinding | | |
| Redirect | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | v1.2 | |
| Predictive text | T9 | T9 |
| Swype | | |
| E-mailclient | POP3, SMTP | |
| QWERTY toetsenbord | | |
| RSS reader | | |
Multimedia
| Radio | | |
| MP3 bediening | | |
| Stereo speakers | | |
| Audio Jack | | |
| HD Voice | | |
| Geluidsformaten | AAC, AAC+ | |
| Ringtone polyfoon | | 40 voice |
| Beltoon componist | | |
| Spelletjes | | |
| Java | MIDP 2.0 3D | MIDP 1.0 |
| Videoverbinding | | |
PIM EN EXTRA FUNCTIES
| Klok | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Valuta Converter | | |
| Organizer | | |
| Agenda | | |
| Vliegtuigstand | | |
| SyncML | | |
| Data en fax | | |
| Schermbeveiliging | | |
| Verwisselbare cover | | |
| Voice picking | | |
| Speaker | | |
| Memorecorder | | |
| Trilalarm | | |
