Screen size
equal specsEF512.2"
EF712.2"
Quick verdict
EF51 leads the measured specs 5-2.
Measured wins
EF51
5
spec wins
Overall winner
Ties
4
equal specs
EF71
2
spec wins
Screen size
equal specsTechnology
EF51
GSM
EF71
GSM
2G bands
EF51
GSM 900 / 1800 / 1900 , GSM 850 / 1800 / 1900 - US version
EF71
GSM 900 / 1800 / 1900
GPRS
EF51
Class 10
EF71
Class 10
EDGE
EF51
No
EF71
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
No
Announced
EF51
2006, February
EF71
2006, May
Status
EF51
Discontinued
EF71
Discontinued
Dimensions
EF51
89 x 49 x 18 mm (3.50 x 1.93 x 0.71 in)
EF71
90 x 47 x 18.5 mm (3.54 x 1.85 x 0.73 in)
Weight
EF51
95 g (3.35 oz)
EF71
100 g (3.53 oz)
SIM
EF51
Mini-SIM
EF71
Mini-SIM
Type
EF51
TFT, 256K colors
EF71
TFT, 256K colors
Size
EF51
2.2 inches, 40 x 40 mm, 15.6 cm2 (~35.7% screen-to-body ratio)
EF71
2.2 inches, 34 x 45 mm, 15.2 cm2 (~36.0% screen-to-body ratio)
Resolution
EF51
120 x 128 pixels (~80 ppi density)
EF71
176 x 220 pixels (~128 ppi density)
Other
EF51
-
EF71
Second external mono display, OLED (128 x 64 pixels)
Card slot
EF51
miniSD
EF71
microSD (dedicated slot)
Phonebook
EF51
Yes, Photo call
EF71
500 x 20 fields, Photo call
Call records
EF51
10 dialed, 10 received, 10 missed calls
EF71
100 dialed, 100 received, 100 missed calls
Internal
EF51
20MB
EF71
24MB
Single
EF51
1.3 MP
EF71
2 MP
Video
EF51
No
EF71
Yes
Other
EF51
No
EF71
No
Loudspeaker
EF51
No
EF71
No
Alert types
EF51
Vibration; Downloadable polyphonic, MP3 ringtones
EF71
Vibration; Downloadable polyphonic, MP3 ringtones
3.5mm jack
EF51
No
EF71
No
Other
EF51
3D surround sound
EF71
3D surround sound, 10-band equalizer
WLAN
EF51
No
EF71
No
Bluetooth
EF51
1.2, A2DP
EF71
Yes
Positioning
EF51
No
EF71
No
Radio
EF51
FM radio
EF71
No
USB
EF51
Proprietary
EF71
Proprietary
Sensors
EF51
EF71
Messaging
EF51
SMS, MMS
EF71
SMS, EMS, MMS
Browser
EF51
WAP 2.0/xHTML
EF71
WAP 2.0/xHTML, HTML
Games
EF51
Yes + downloadable
EF71
Yes + downloadable
Java
EF51
Yes, MIDP 2.0
EF71
Yes, MIDP 2.0
Other
EF51
WMA/MP3/AAC/AAC+ player Predictive text input Voice memo Stopwatch Organizer
EF71
MP3/AAC/WMA player Photo editor Predictive text input Voice memo Stopwatch Organizer
Type
EF51
Removable Li-Ion 870 mAh battery
EF71
Removable Li-Ion 750 mAh battery
Stand-by
EF51
Up to 200 h
EF71
Up to 225 h
Talk time
EF51
Up to 4 h
EF71
Up to 3 h
Colors
EF51
Flashy White, Black
EF71
Stellar Aluminum