Microsoft Lumia 640 Dual SIM vs Nokia C20
| Vormgeving | Touchscreen | Touchscreen |
| Afmetingen | 141.30 x 72.20 x 8.80 mm | 169.90 x 77.90 x 8.80 mm |
| Gewicht | 145.00 g | 191.00 g |
| Schermgrootte | 5.00" | 5.52" |
| Scherm | Kleurrijk / IPS TFT 16M kleuren 720 x 1280 px (5.00") 294 ppi | Kleurrijk / IPS TFT 16M kleuren 60 Hz 720 x 1600 px (5.52") 318 ppi |
| Bescherming scherm | Corning Gorilla Glass Buy screen protector |  |
| Extra scherm | | |
| Secundaire bescherming scherm | | |
| Max. gesprekstijd | 2G: 1640 min. (27.3 h) 3G: 1220 min. (20.3 h) |  |
| Max. standbytijd | 2G: 840 uur (35.0 dagen) | |
| Maximale afspeeltijd | Audio: 86 h (3.6 dagen) Video: 8,7 h (0.3 dagen) | Video: 13 h (0.5 dagen) |
| Maximale surfen op het internet tijd | WiFi: 10,9 h (0.4 dagen) | nd |
| Standaard batterij | Li-Ion 2500 mAhBuy powerbank | Li-Ion 3000 mAhBuy powerbank |
| Snel opladen van de batterij | | |
| Draadloos opladen van de batterij | | |
| Intern geheugen | 8 GB | 16 GB, 32 GB |
| RAM-geheugen | 1 GB | 1 GB, 2 GB |
| Geheugen kaarten |  microSD, microSDHC, microSDXC tot 128 GBBuy memory card | microSD, microSDHC, microSDXC tot 256 GBBuy memory card |
| Besturingssysteem | MS Windows Phone 8.1 | Android 11 Go |
| Processor | Qualcomm Snapdragon 400 | Unisoc SC9863A |
| CPU-klok | 1200 MHz | 1600 MHz |
| GPU | Adreno 305 | IMG8322 @550 MHz |
| Touchscreen | | |
| Dual SIM | | |
| SIM-kaarten standaard | DualSIM(microSIM, microSIM) | SingleSIM(nanoSIM) |
| Hybride Dual SIM | | nd |
| Introductiedatum | I. kwartaal 2015 | II. kwartaal 2021 |
| Andere namen van deze telefoon | - | - |
| GSM standaard | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS standaard (3G) | 850 900 1900 2100 | 850 900 1700 1900 2100 |
| LTE-standaard | | |
| 5G-standaard | | |
| CDMA standaard | | |
| TD-SCDMA-standaard | | |
| UMA standaard | | |
CAMERA'S - TERUG
| Eerste camera | | |
| Matrix | 8 Mpx | 5 Mpx |
| Schermresolutie | 3264x2448 px | |
| Optische zoom | | |
| Flitser | LED | LED |
| Dual-color LED-flitser | | |
| Videoresolutie | 1920x1080 px | |
| Videoformaten | MPEG4, H.263, H.264 | H.263, H.264, MPEG4 |
| Extra | AF | f/2.2 |
CAMERA'S - VOORKANT
| Eerste camera | | |
| Matrix | 1 Mpx | 5 Mpx |
| Optische zoom | | |
| Flitser | | LED |
| Dual-color LED-flitser | | |
| Videoformaten | MPEG4, H.263, H.264 | H.263, H.264, MPEG4 |
| Extra | - | FF, f/2.2 |
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 | 42.20 Mbit/s | |
| HSUPA | 5.76 Mbit/s | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v4.0 | v4.2 |
| Perfil A2DP | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 b/g/n |
| WiFi frequenties | 2,4 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi-hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATIE EN BERICHTEN
| Call waiting | | |
| Video conferentie verbinding | | |
| Redirect | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Predictive text | XT9 | 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, AAC+, AMR, WAV, eAAC+ | AAC, AAC+, AMR, MID, WAV, eAAC+ |
| Ringtone polyfoon | | |
| Video beltonen | | |
| Beltoon componist | | |
| Spelletjes | | |
| Java | | ART |
| Videoverbinding | | |
| DVB-H televisie | | |
| TV aansluiting | | |
PIM EN EXTRA FUNCTIES
| Klok | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Valuta Converter | | |
| Organizer | | |
| Agenda | | |
| Vliegtuigstand | | |
| SyncML | | |
| Data en fax | | |
| Schermbeveiliging | | |
| Thema's | | |
| Verwisselbare cover | | |
| Voice picking | | |
| Speaker | | |
| Memorecorder | | |
| Trilalarm | | |