Screen size
t420—
T510Winner: 1.8"
Quick verdict
T510 leads the measured specs 5-1.
Measured wins
t420
1
spec wins
Ties
4
equal specs
T510
5
spec wins
Overall winner
Screen size
Technology
t420
GSM
T510
GSM
2G bands
t420
GSM 900 / 1800
T510
GSM 900 / 1800
GPRS
t420
Class 8
T510
Class 8
EDGE
t420
No
T510
No
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
Stereo speakers
Announced
t420
2005, Q1
T510
2005, Q1
Status
t420
Discontinued
T510
Discontinued
Dimensions
t420
62 x 64 x 23 mm (2.44 x 2.52 x 0.91 in)
T510
90 x 40 x 18 mm (3.54 x 1.57 x 0.71 in)
Weight
t420
82 g (2.89 oz)
T510
87 g (3.07 oz)
SIM
t420
Mini-SIM
T510
Mini-SIM
Type
t420
TFT, 65K colors
T510
TFT, 65K colors
Size
t420
T510
1.8 inches, 29 x 35 mm, 10.2 cm2 (~28.3% screen-to-body ratio)
Resolution
t420
128 x 160 pixels
T510
128 x 160 pixels (~114 ppi density)
Other
t420
Second OLED display, 256 colors, 96 x 64 pixels Downloadable animation
T510
Downloadable animation
Card slot
t420
No
T510
miniSD
Phonebook
t420
300 entries, Photocall
T510
250 entries
Call records
t420
10 received, dialed and missed calls
T510
10 received, dialed and missed calls
Internal
t420
-
T510
32MB
Single
t420
VGA
T510
VGA
Video
t420
Yes
T510
No
Features
t420
-
T510
LED flash
Other
t420
No
T510
No
Loudspeaker
t420
No
T510
Yes, with stereo speakers
Alert types
t420
Vibration; Downloadable polyphonic ringtones, composer
T510
Vibration; Downloadable polyphonic ringtones
3.5mm jack
t420
No
T510
No
Other
t420
-
T510
Dual speaker
WLAN
t420
No
T510
No
Bluetooth
t420
No
T510
No
Positioning
t420
No
T510
No
Radio
t420
No
T510
No
USB
t420
No
T510
Proprietary
Sensors
t420
T510
Messaging
t420
SMS, EMS, MMS
T510
SMS, EMS, MMS
Browser
t420
WAP 1.2.1
T510
WAP 2.0/xHTML
Games
t420
Yes
T510
Yes + downloadable
Java
t420
No
T510
Yes
Other
t420
Video player Photo editor Predictive text input Organizer
T510
Predictive text input MP3 player Organizer Voice memo
Type
t420
Removable Li-Ion 650 mAh battery
T510
Removable Li-Ion 650 mAh battery
Stand-by
t420
Up to 100 h
T510
Up to 100 h
Talk time
t420
Up to 2 h
T510
Up to 2 h
Colors
t420
Black
T510
Silver, Blue