Screen size
M811.8"
S81Winner: 2.0"+10%
Quick verdict
S81 leads the measured specs 6-2.
Measured wins
M81
2
spec wins
Ties
4
equal specs
S81
6
spec wins
Overall winner
Screen size
Technology
M81
GSM
S81
GSM / UMTS
2G bands
M81
GSM 900 / 1800 / 1900
S81
GSM 900 / 1800 / 1900
GPRS
M81
Class 10
S81
-
EDGE
M81
Class 10
S81
-
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
3G bands
M81
-
S81
UMTS 2100
Speed
M81
-
S81
Yes, 384 kbps
Announced
M81
2006, June
S81
2006, February
Status
M81
Discontinued
S81
Discontinued
Dimensions
M81
105.3 x 47.5 x 18.4 mm (4.15 x 1.87 x 0.72 in)
S81
109 x 48 x 13 mm (4.29 x 1.89 x 0.51 in)
Weight
M81
96 g (3.39 oz)
S81
99 g (3.49 oz)
SIM
M81
Mini-SIM
S81
Mini-SIM
Other
M81
Dust and shock resistant
S81
-
Type
M81
TFT, 256K colors
S81
TFT, 256K colors
Size
M81
1.8 inches, 27 x 36 mm, 10.0 cm2 (~20.1% screen-to-body ratio)
S81
2.0 inches, 31 x 39 mm, 12.6 cm2 (~24.1% screen-to-body ratio)
Resolution
M81
132 x 176 pixels, 4:3 ratio (~122 ppi density)
S81
176 x 220 pixels (~141 ppi density)
Card slot
M81
RS-MMC
S81
microSD (dedicated slot)
Phonebook
M81
Yes, Photo call
S81
Yes, Photo call
Call records
M81
10 dialed, 10 received, 10 missed calls
S81
10 dialed, 10 received, 10 missed calls
Internal
M81
27MB
S81
30MB
Single
M81
1.3 MP
S81
1.3 MP
Features
M81
LED flash
S81
LED flash
Video
M81
Yes
S81
Yes
Other
M81
No
S81
-
Single
M81
-
S81
VGA videocall camera
Video
M81
-
S81
Loudspeaker
M81
No
S81
No
Alert types
M81
Vibration; Downloadable polyphonic, MP3 ringtones
S81
Vibration; Downloadable polyphonic, MP3, AAC ringtones
3.5mm jack
M81
No
S81
No
WLAN
M81
No
S81
No
Bluetooth
M81
Yes
S81
1.1
Positioning
M81
No
S81
No
Radio
M81
No
S81
No
USB
M81
2.0
S81
Proprietary
Sensors
M81
S81
Messaging
M81
SMS, MMS, EMail, Instant Messaging
S81
SMS, MMS, Email
Browser
M81
WAP 2.0/xHTML
S81
WAP 2.0/xHTML
Games
M81
Yes + downloadable
S81
Yes
Java
M81
Yes, MIDP 2.0
S81
Yes, MIDP 2.0
Other
M81
MP3/AAC player Organizer Voice memo Predictive text input
S81
MP3/AAC player Video telephony iTap Stopwatch Organizer
Type
M81
Removable Li-Ion 820 mAh battery
S81
Removable Li-Ion 920 mAh battery
Stand-by
M81
Up to 300 h
S81
Up to 320 h
Talk time
M81
Up to 5 h
S81
Up to 4 h 50 min
Colors
M81
Graphite Black, Steel Blue
S81
Black/Silver