Screen size
my721zWinner: 2.2"+9.1%
my730c2.0"
Quick verdict
my730c leads the measured specs 4-3.
Measured wins
my721z
3
spec wins
Ties
3
equal specs
my730c
4
spec wins
Overall winner
Screen size
Technology
my721z
GSM
my730c
GSM / UMTS
2G bands
my721z
GSM 900 / 1800 / 1900
my730c
GSM 900 / 1800 / 1900
GPRS
my721z
Yes
my730c
-
EDGE
my721z
No
my730c
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
-
3G bands
my721z
-
my730c
UMTS 2100
Speed
my721z
-
my730c
Yes, 384 kbps
Announced
my721z
2008, February. Released 2008
my730c
2008, August. Released 2008, Q4
Status
my721z
Discontinued
my730c
Discontinued
Dimensions
my721z
106 x 52 x 12 mm (4.17 x 2.05 x 0.47 in)
my730c
96 x 49 x 16 mm (3.78 x 1.93 x 0.63 in)
Weight
my721z
125 g (4.41 oz)
my730c
95 g (3.35 oz)
SIM
my721z
Mini-SIM
my730c
Mini-SIM
Type
my721z
TFT, 256K colors
my730c
TFT, 256K colors
Size
my721z
2.2 inches, 15.2 cm2 (~27.6% screen-to-body ratio)
my730c
2.0 inches, 12.4 cm2 (~26.3% screen-to-body ratio)
Resolution
my721z
176 x 220 pixels (~128 ppi density)
my730c
240 x 320 pixels, 4:3 ratio (~200 ppi density)
Other
my721z
Mirror effect
my730c
Secondary external display Dedicated music keys
Card slot
my721z
microSD (dedicated slot)
my730c
microSD (dedicated slot)
Phonebook
my721z
Yes
my730c
1000 contacts, Photocall
Call records
my721z
20 dialed, 20 received, 20 missed calls
my730c
20 dialed, 20 received, 20 missed calls
Internal
my721z
-
my730c
54MB
Single
my721z
3.15 MP
my730c
2 MP
Video
my721z
Yes
my730c
Yes
Other
my721z
No
my730c
No
Loudspeaker
my721z
Yes
my730c
Yes
Alert types
my721z
Vibration; Polyphonic ringtones
my730c
-
3.5mm jack
my721z
No
my730c
No
WLAN
my721z
No
my730c
No
Bluetooth
my721z
Yes
my730c
Yes
Positioning
my721z
No
my730c
No
Radio
my721z
Stereo FM radio, RDS
my730c
No
USB
my721z
Proprietary
my730c
miniUSB
Sensors
my721z
my730c
Messaging
my721z
SMS, MMS, Instant Messaging
my730c
SMS, MMS
Browser
my721z
WAP 2.0/xHTML
my730c
WAP 2.0/xHTML
Games
my721z
Yes
my730c
Yes
Java
my721z
Yes, MIDP 2.0
my730c
Yes, MIDP 2.0
Other
my721z
Music player Predictive text input Organizer
my730c
MP3/MP4 player Organizer Voice memo Predictive text input
Type
my721z
Removable Li-Ion battery
my730c
Removable Li-Ion 920 mAh battery
Stand-by
my721z
Up to 200 h
my730c
Up to 300 h
Talk time
my721z
Up to 3 h
my730c
Up to 4 h
Colors
my721z
Silver
my730c
Black