Screen size
equal specsCF611.8"
M811.8"
Quick verdict
M81 leads the measured specs 6-0.
Measured wins
CF61
0
spec wins
Ties
5
equal specs
M81
6
spec wins
Overall winner
Screen size
equal specsTechnology
CF61
GSM
M81
GSM
2G bands
CF61
GSM 900 / 1800 / 1900
M81
GSM 900 / 1800 / 1900
GPRS
CF61
Class 10
M81
Class 10
EDGE
CF61
No
M81
Class 10
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Announced
CF61
2006, March
M81
2006, June
Status
CF61
Discontinued
M81
Discontinued
Dimensions
CF61
88 x 46 x 23 mm, 80 cc (3.46 x 1.81 x 0.91 in)
M81
105.3 x 47.5 x 18.4 mm (4.15 x 1.87 x 0.72 in)
Weight
CF61
99 g (3.49 oz)
M81
96 g (3.39 oz)
SIM
CF61
Mini-SIM
M81
Mini-SIM
Other
CF61
-
M81
Dust and shock resistant
Type
CF61
TFT, 256K colors
M81
TFT, 256K colors
Size
CF61
1.8 inches, 29 x 35 mm, 10.2 cm2 (~25.2% screen-to-body ratio)
M81
1.8 inches, 27 x 36 mm, 10.0 cm2 (~20.1% screen-to-body ratio)
Resolution
CF61
128 x 160 pixels (~114 ppi density)
M81
132 x 176 pixels, 4:3 ratio (~122 ppi density)
Other
CF61
Second external 4K colors display, CSTN (96 x 64 pixels) 5-way navigation key
M81
-
Card slot
CF61
microSD (dedicated slot)
M81
RS-MMC
Phonebook
CF61
1000 x 20 fields, Photo call
M81
Yes, Photo call
Call records
CF61
10 dialed, 10 received, 10 missed calls
M81
10 dialed, 10 received, 10 missed calls
Internal
CF61
1.5MB
M81
27MB
Single
CF61
1.3 MP
M81
1.3 MP
Video
CF61
No
M81
Yes
Features
CF61
-
M81
LED flash
Other
CF61
No
M81
No
Loudspeaker
CF61
Yes
M81
No
Alert types
CF61
Vibration; Downloadable polyphonic, MP3 ringtones
M81
Vibration; Downloadable polyphonic, MP3 ringtones
3.5mm jack
CF61
No
M81
No
Other
CF61
3D surround sound
M81
-
WLAN
CF61
No
M81
No
Bluetooth
CF61
Yes
M81
Yes
Positioning
CF61
No
M81
No
Radio
CF61
No
M81
No
USB
CF61
1.1
M81
2.0
Sensors
CF61
M81
Messaging
CF61
SMS, EMS, MMS
M81
SMS, MMS, EMail, Instant Messaging
Browser
CF61
WAP 2.0/xHTML
M81
WAP 2.0/xHTML
Games
CF61
Yes + downloadable
M81
Yes + downloadable
Java
CF61
Yes, MIDP 2.0
M81
Yes, MIDP 2.0
Other
CF61
MP3/AAC/WMA player Predictive text input Organizer Exchangeable front cover Voice memo
M81
MP3/AAC player Organizer Voice memo Predictive text input
Type
CF61
Removable Li-Ion 750 mAh battery
M81
Removable Li-Ion 820 mAh battery
Stand-by
CF61
Up to 225 h
M81
Up to 300 h
Talk time
CF61
Up to 3 h
M81
Up to 5 h
Colors
CF61
Silver
M81
Graphite Black, Steel Blue