Screen size
1 (2021)Winner: 5.0"+64%
OT-S521A1.8"
Quick verdict
1 (2021) leads the measured specs 14-1.
Measured wins
1 (2021)
14
spec wins
Overall winner
Ties
2
equal specs
OT-S521A
1
spec wins
Screen size
Technology
1 (2021)
GSM / HSPA / LTE
OT-S521A
GSM
2G bands
1 (2021)
GSM 850 / 900 / 1800 / 1900
OT-S521A
GSM 850 / 1900
3G bands
1 (2021)
HSDPA 850 / 900 / 1900 / 2100
OT-S521A
-
4G bands
1 (2021)
1, 3, 7, 8, 20
OT-S521A
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
equal specs5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
-
Speed
1 (2021)
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
OT-S521A
-
GPRS
1 (2021)
-
OT-S521A
Class 10
EDGE
1 (2021)
-
OT-S521A
No
Announced
1 (2021)
2021, June 25
OT-S521A
2008. Released 2008
Status
1 (2021)
Available. Released 2021, October 22
OT-S521A
Discontinued
Dimensions
1 (2021)
137.6 x 65.7 x 9.8 mm (5.42 x 2.59 x 0.39 in)
OT-S521A
103.5 x 44.9 x 10.9 mm (4.07 x 1.77 x 0.43 in)
Weight
1 (2021)
134 g (4.73 oz)
OT-S521A
83 g (2.93 oz)
SIM
1 (2021)
· Nano-SIM· Nano-SIM + Nano-SIM
OT-S521A
Mini-SIM
Type
1 (2021)
TFT LCD
OT-S521A
STN
Size
1 (2021)
5.0 inches, 64.5 cm2 (~71.4% screen-to-body ratio)
OT-S521A
1.8 inches, 10.2 cm2 (~21.9% screen-to-body ratio)
Resolution
1 (2021)
480 x 960 pixels, 18:9 ratio (~215 ppi density)
OT-S521A
128 x 160 pixels (~114 ppi density)
Protection
1 (2021)
Asahi Glass
OT-S521A
-
OS
1 (2021)
Android 11 (Go edition)
OT-S521A
-
Chipset
1 (2021)
Mediatek MT6739 (28 nm)
OT-S521A
-
CPU
1 (2021)
Quad-core 1.28 GHz Cortex-A53
OT-S521A
-
GPU
1 (2021)
PowerVR GE8100
OT-S521A
-
Card slot
1 (2021)
microSDHC (dedicated slot)
OT-S521A
No
Internal
1 (2021)
8GB 1GB RAM, 16GB 1GB RAM
OT-S521A
2MB
Other
1 (2021)
eMMC 5.1
OT-S521A
-
Phonebook
1 (2021)
-
OT-S521A
800 entries
Call records
1 (2021)
-
OT-S521A
20 dialed, 20 received, 20 missed calls
Single
1 (2021)
5 MP, f/2.4, 1/5.0", 1.12µm
OT-S521A
VGA
Features
1 (2021)
LED flash
OT-S521A
-
Video
1 (2021)
720p@30fps
OT-S521A
No
Single
1 (2021)
2 MP, f/2.8
OT-S521A
-
Video
1 (2021)
720p@30fps
OT-S521A
-
Other
1 (2021)
-
OT-S521A
No
Loudspeaker
1 (2021)
Yes
OT-S521A
Yes
3.5mm jack
1 (2021)
Yes
OT-S521A
No
WLAN
1 (2021)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
OT-S521A
No
Bluetooth
1 (2021)
4.2, A2DP, LE
OT-S521A
No
Positioning
1 (2021)
GPS
OT-S521A
No
NFC
1 (2021)
No
OT-S521A
-
Radio
1 (2021)
FM radio
OT-S521A
No
USB
1 (2021)
microUSB 2.0
OT-S521A
miniUSB 2.0
Sensors
1 (2021)
Accelerometer, proximity
OT-S521A
Messaging
1 (2021)
-
OT-S521A
SMS, MMS
Browser
1 (2021)
-
OT-S521A
WAP 2.0/xHTML
Games
1 (2021)
-
OT-S521A
2
Java
1 (2021)
-
OT-S521A
No
Other
1 (2021)
-
OT-S521A
MP3/AAC+ player Organizer Voice memo Predictive text input
Type
1 (2021)
Li-Ion 2000 mAh
OT-S521A
Removable Li-Ion 750 mAh battery
Stand-by
1 (2021)
-
OT-S521A
Up to 400 h
Talk time
1 (2021)
-
OT-S521A
Up to 10 h
Colors
1 (2021)
Volcano Black, AI Aqua
OT-S521A
Dark grey, Cherry red
Price
1 (2021)
About 60 EUR
OT-S521A
-
SAR
1 (2021)
-
OT-S521A
1.15 W/kg (head) 1.17 W/kg (body)