Screen size
iO—
Twin+—
Quick verdict
iO leads the measured specs 2-1.
Measured wins
iO
2
spec wins
Overall winner
Ties
3
equal specs
Twin+
1
spec wins
Screen size
Technology
iO
GSM
Twin+
GSM
2G bands
iO
GSM 900
Twin+
GSM 900 / 1800
GPRS
iO
No
Twin+
No
EDGE
iO
No
Twin+
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
iO
1999
Twin+
2000
Status
iO
Discontinued
Twin+
Discontinued
Dimensions
iO
122 x 56 x 24 mm (4.80 x 2.20 x 0.94 in)
Twin+
112 x 49 x 27 mm, 115 cc (4.41 x 1.93 x 1.06 in)
Weight
iO
167 g (5.89 oz)
Twin+
105 g (3.70 oz)
SIM
iO
Mini-SIM
Twin+
Dual SIM (Mini-SIM)
Type
iO
Monochrome graphic
Twin+
Monochrome graphic
Size
iO
Twin+
Resolution
iO
6 lines
Twin+
100 x 48 pixels, 6 lines
Other
iO
Dynamic & user-selectable font size Cyrillic characters
Twin+
Electro-luminescent lighting Dynamic & user-selectable font size
Card slot
iO
No
Twin+
No
Phonebook
iO
SIM only
Twin+
255
Call records
iO
15 dialed, 5 received, 5 missed calls
Twin+
15 dialed, 5 received, 5 missed calls
Other
iO
No
Twin+
No
Loudspeaker
iO
No
Twin+
No
Alert types
iO
Vibration; Monophonic ringtones
Twin+
Downloadable monophonic ringtones
3.5mm jack
iO
No
Twin+
No
Other
iO
-
Twin+
Personalised ringing melodies Ascending alert Several SMS alert tones and tone levels
WLAN
iO
No
Twin+
No
Bluetooth
iO
No
Twin+
No
Positioning
iO
No
Twin+
No
Radio
iO
No
Twin+
Stereo FM radio, RDS
USB
iO
Twin+
Sensors
iO
Twin+
Messaging
iO
SMS
Twin+
SMS
Browser
iO
Twin+
Clock
iO
Yes
Twin+
Yes
Alarm
iO
Yes
Twin+
Yes
Games
iO
3
Twin+
3 - Wall breaker, Galactic gunner, Labyrinth
Java
iO
No
Twin+
No
Other
iO
Predictive text input Organizer Phone ON/OFF timers Temperature indicator
Twin+
Location-based services support Predictive text input Organizer Phone ON/OFF timers User-changeable display masks
Type
iO
Removable NiMH 700 mAh battery
Twin+
Removable Li-Ion 650 mAh battery
Stand-by
iO
60 h
Twin+
120 h
Talk time
iO
5 h
Twin+
5 h 20 min
Colors
iO
6
Twin+
3