Screen size
EF712.2"
P51Winner: 2.8"+21%
Quick verdict
P51 leads the measured specs 6-2.
Measured wins
EF71
2
spec wins
Ties
3
equal specs
P51
6
spec wins
Overall winner
Screen size
Technology
EF71
GSM
P51
GSM
2G bands
EF71
GSM 900 / 1800 / 1900
P51
GSM 850 / 900 / 1800 / 1900
GPRS
EF71
Class 10
P51
Class 10
EDGE
EF71
No
P51
No
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front 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
EF71
2006, May
P51
2006, March
Status
EF71
Discontinued
P51
Discontinued
Dimensions
EF71
90 x 47 x 18.5 mm (3.54 x 1.85 x 0.73 in)
P51
122 x 60 x 20 mm, 130 cc (4.80 x 2.36 x 0.79 in)
Weight
EF71
100 g (3.53 oz)
P51
170 g (6.00 oz)
SIM
EF71
Mini-SIM
P51
Mini-SIM
Keyboard
EF71
-
P51
QWERTY
Type
EF71
TFT, 256K colors
P51
TFT resistive touchscreen, 256K colors
Size
EF71
2.2 inches, 34 x 45 mm, 15.2 cm2 (~36.0% screen-to-body ratio)
P51
2.8 inches, 42 x 57 mm, 24.3 cm2 (~33.2% screen-to-body ratio)
Resolution
EF71
176 x 220 pixels (~128 ppi density)
P51
240 x 320 pixels, 4:3 ratio (~143 ppi density)
Other
EF71
Second external mono display, OLED (128 x 64 pixels)
P51
5-way navigation stick
Card slot
EF71
microSD (dedicated slot)
P51
MMC/SDIO
Phonebook
EF71
500 x 20 fields, Photo call
P51
-
Call records
EF71
100 dialed, 100 received, 100 missed calls
P51
-
Internal
EF71
24MB
P51
64MB RAM, 192MB ROM
Single
EF71
2 MP
P51
1.3 MP
Video
EF71
Yes
P51
QCIF
Other
EF71
No
P51
No
Loudspeaker
EF71
No
P51
Yes
Alert types
EF71
Vibration; Downloadable polyphonic, MP3 ringtones
P51
Vibration; Downloadable polyphonic, MP3 ringtones
3.5mm jack
EF71
No
P51
No
Other
EF71
3D surround sound, 10-band equalizer
P51
-
WLAN
EF71
No
P51
Wi-Fi 802.11b/g, VoIP via Wi-Fi
Bluetooth
EF71
Yes
P51
1.2, A2DP
Positioning
EF71
No
P51
GPS
Radio
EF71
No
P51
No
USB
EF71
Proprietary
P51
Proprietary
Sensors
EF71
P51
Messaging
EF71
SMS, EMS, MMS
P51
-
Browser
EF71
WAP 2.0/xHTML, HTML
P51
WAP 2.0/xHTML, HTML
Games
EF71
Yes + downloadable
P51
-
Java
EF71
Yes, MIDP 2.0
P51
-
Other
EF71
MP3/AAC/WMA player Photo editor Predictive text input Voice memo Stopwatch Organizer
P51
MP3/MP4 player Handwriting recognition Pocket Office Voice command
Type
EF71
Removable Li-Ion 750 mAh battery
P51
Removable Li-Ion 1370 mAh battery
Stand-by
EF71
Up to 225 h
P51
Up to 150 h
Talk time
EF71
Up to 3 h
P51
Up to 4 h
Colors
EF71
Stellar Aluminum
P51
OS
EF71
-
P51
Microsoft Windows Mobile 5.0 PocketPC
CPU
EF71
-
P51
32-bit Intel XScale PXA272 416 MHz