Microsoft Lumia 640
Microsoft Lumia 640 Guide
The Basics
Internet settings
Sound settings
Display settings
Voice commands
Security
Making calls
Contacts
Voicemail
Call restrictions
Photo and video
Bluetooth
APP Chat
Troubleshooting
Possible causes
Turn off fixed dialing.
Turn off fixed dialing.
Little or no network coverage
Try again later when you're in an area with better network coverage.
View our network coverage map.
There's an error at the receiving end
Try calling another number. If you can call another number, the error is probably at the receiving end.
There may be a temporary network problem
Try again later or when you're in a different area.
Your number has been suspended due to non-payment
Contact our customer service to have your number reactivated.
You're abroad and roaming isn't included in your rate plan
Contact our customer service to activate roaming in your rate plan.
Turn on automatic network selection.
Turn on automatic network selection.
Turn off flight mode.
Turn off flight mode.
No credit on your prepaid card
See how to top up your prepaid card.
Specs
Microsoft Lumia 640
Dimensions (LxWxH) | 141.3 x 72.2 x 8.8 mm |
Weight | 145 g |
Colour display | 16 million colours |
Resolution | 720 x 1280 pixels |
Touch screen | Yes |
Talk time | Up to 26.5 hours |
Stand-by time | Up to 36 days |
Phone memory | 1 GB RAM, 8 GB storage |
Memory card slot | Yes |
SIM type | Micro SIM |
GSM 850 MHz | Yes |
GSM 900 MHz | Yes |
GSM 1800 MHz | Yes |
GSM 1900 MHz | Yes |
GPRS | Yes |
EDGE (EGPRS) | Yes |
3G (UMTS) | Yes |
HSDPA (3.5G) | Yes |
4G (LTE) | Yes |
SMS | Yes |
MMS | Yes |
Chat | Yes |
Yes |
Camera | 8 megapixels |
Video player | Yes |
Video recorder | Yes |
Video call | No |
Music player | Yes |
Radio | Yes |
Podcasts | Yes |
Voice recorder | Yes |
Internal GPS | Yes |
Maps/Navigation | HERE Maps |
Calendar | Yes |
Tasks | No |
Notes | Yes |
Alarm | Yes |
Stopwatch | Yes |
Countdown timer | Yes |
Calculator | Yes |
Office applications | Office |
Browser | Yes |
RSS reader | No |
Wi-Fi | Yes |
USB data cable | Yes |
Bluetooth | Yes |
Data modem | No |
Synchronisation with computer | Yes |