Screen size
equal specsmy501X1.9"
my521x1.9"
Quick verdict
my501X leads the measured specs 2-1.
Measured wins
my501X
2
spec wins
Overall winner
Ties
6
equal specs
my521x
1
spec wins
Screen size
equal specsTechnology
my501X
GSM
my521x
GSM
2G bands
my501X
GSM 900 / 1800 / 1900
my521x
GSM 900 / 1800 / 1900
GPRS
my501X
Class 10
my521x
Yes
EDGE
my501X
No
my521x
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
equal specsThickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
No
Announced
my501X
2006, March
my521x
2008, July
Status
my501X
Discontinued
my521x
Discontinued
Dimensions
my501X
100 x 46 x 16.5 mm (3.94 x 1.81 x 0.65 in)
my521x
107 x 46 x 10 mm (4.21 x 1.81 x 0.39 in)
Weight
my501X
90 g (3.17 oz)
my521x
90 g (3.17 oz)
SIM
my501X
Mini-SIM
my521x
Mini-SIM
Type
my501X
TFT, 256K colors
my521x
TFT, 65K colors
Size
my501X
1.9 inches, 11.4 cm2 (~24.7% screen-to-body ratio)
my521x
1.9 inches, 11.4 cm2 (~23.1% screen-to-body ratio)
Resolution
my501X
176 x 220 pixels (~148 ppi density)
my521x
128 x 160 pixels (~108 ppi density)
Card slot
my501X
miniSD
my521x
microSD (dedicated slot)
Phonebook
my501X
Yes
my521x
Yes
Call records
my501X
20 dialed, 20 received, 20 missed calls
my521x
20 dialed, 20 received, 20 missed calls
Internal
my501X
32MB
my521x
10MB
Single
my501X
1.3 MP
my521x
1.3 MP
Video
my501X
Yes
my521x
Yes
Other
my501X
No
my521x
No
Loudspeaker
my501X
No
my521x
No
Alert types
my501X
Vibration; Downloadable polyphonic ringtones
my521x
Vibration; Polyphonic(32) ringtones
3.5mm jack
my501X
No
my521x
No
WLAN
my501X
No
my521x
No
Bluetooth
my501X
Yes
my521x
Yes
Positioning
my501X
No
my521x
No
Radio
my501X
No
my521x
No
USB
my501X
miniUSB
my521x
Proprietary
Sensors
my501X
my521x
Messaging
my501X
SMS, EMS,MMS
my521x
SMS, EMS, MMS
Browser
my501X
WAP 2.0/xHTML
my521x
WAP 2.0/xHTML
Games
my501X
Yes
my521x
Yes
Java
my501X
Yes, MIDP 2.0
my521x
Yes, MIDP 2.0
Other
my501X
MP3/AAC player Predictive text input Organizer
my521x
MP3/AAC player Predictive text input Organizer
Type
my501X
Removable Li-Ion battery
my521x
Removable Li-Ion battery
Stand-by
my501X
Up to 250 h
my521x
Up to 200 h
Talk time
my501X
Up to 3 h 30 min
my521x
Up to 3 h
Colors
my501X
Black, Silver, White
my521x
Black,Silver