Screen size
GS 18—
T20s—
Quick verdict
GS 18 leads the measured specs 2-1.
Measured wins
GS 18
2
spec wins
Overall winner
Ties
3
equal specs
T20s
1
spec wins
Screen size
Technology
GS 18
GSM
T20s
GSM
2G bands
GS 18
GSM 900
T20s
GSM 900 / 1800
GPRS
GS 18
No
T20s
No
EDGE
GS 18
No
T20s
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
GS 18
1996
T20s
2000
Status
GS 18
Discontinued
T20s
Discontinued
Dimensions
GS 18
147 x 60 x 24 mm (5.79 x 2.36 x 0.94 in)
T20s
101 x 54 x 28 mm (3.98 x 2.13 x 1.10 in)
Weight
GS 18
215 g (7.58 oz)
T20s
128 g (4.52 oz)
SIM
GS 18
Mini-SIM
T20s
Mini-SIM
Type
GS 18
Alphanumeric
T20s
Monochrome graphic
Size
GS 18
T20s
Resolution
GS 18
4 x 12 chars
T20s
101 x 33 pixels, 3 x 12 chars
Other
GS 18
Fixed icons
T20s
-
Card slot
GS 18
No
T20s
No
Phonebook
GS 18
100
T20s
99
Call records
GS 18
T20s
10 received, dialed and missed calls
Other
GS 18
-
T20s
SMS Templates
Other
GS 18
No
T20s
No
Loudspeaker
GS 18
No
T20s
No
Alert types
GS 18
Monophonic ringtones
T20s
Vibration; Monophonic ringtones, composer
3.5mm jack
GS 18
No
T20s
No
WLAN
GS 18
No
T20s
No
Bluetooth
GS 18
No
T20s
No
Positioning
GS 18
No
T20s
No
Radio
GS 18
No
T20s
No
USB
GS 18
T20s
Sensors
GS 18
T20s
Messaging
GS 18
SMS
T20s
SMS
Browser
GS 18
T20s
WAP
Clock
GS 18
No
T20s
Yes
Alarm
GS 18
No
T20s
Yes
Games
GS 18
No
T20s
4 - Tetris, Erix, E-maze, Ballpop
Languages
GS 18
12
T20s
24
Java
GS 18
No
T20s
No
Other
GS 18
Radio link protocol Serial port
T20s
Swatch Internet Time Voice dial Voice answer Calculator Stopwatch Start-up shut-down shows Profiles Active flip
Type
GS 18
Removable NiMH 1200 mAh battery
T20s
Removable NiMH battery
Stand-by
GS 18
36 h
T20s
200 h
Talk time
GS 18
180 min
T20s
10 h
Colors
GS 18
T20s
4 - Blue Whirl, Lime Twist, Silver Weave, Beige Harmony