Screen size
1L (2021)Winner: 6.1"+70%
OT-S521A1.8"
Quick verdict
1L (2021) leads the measured specs 14-1.
Measured wins
1L (2021)
14
spec wins
Overall winner
Ties
2
equal specs
OT-S521A
1
spec wins
Screen size
Technology
1L (2021)
GSM / HSPA / LTE
OT-S521A
GSM
2G bands
1L (2021)
GSM 850 / 900 / 1800 / 1900
OT-S521A
GSM 850 / 1900
3G bands
1L (2021)
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
OT-S521A
-
4G bands
1L (2021)
2, 3, 4, 5, 7, 8, 12, 17, 28, 66 - USA
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
OT-S521A
-
Speed
1L (2021)
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
OT-S521A
-
GPRS
1L (2021)
-
OT-S521A
Class 10
EDGE
1L (2021)
-
OT-S521A
No
Announced
1L (2021)
2021, January 12
OT-S521A
2008. Released 2008
Status
1L (2021)
Available. Released 2021, April 26
OT-S521A
Discontinued
Dimensions
1L (2021)
155.9 x 74.5 x 9.9 mm (6.14 x 2.93 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
1L (2021)
179 g (6.31 oz)
OT-S521A
83 g (2.93 oz)
Build
1L (2021)
Glass front, plastic back, plastic frame
OT-S521A
-
SIM
1L (2021)
· Nano-SIM· Nano-SIM + Nano-SIM
OT-S521A
Mini-SIM
Type
1L (2021)
IPS LCD
OT-S521A
STN
Size
1L (2021)
6.1 inches, 91.3 cm2 (~78.6% screen-to-body ratio)
OT-S521A
1.8 inches, 10.2 cm2 (~21.9% screen-to-body ratio)
Resolution
1L (2021)
720 x 1560 pixels, 19.5:9 ratio (~282 ppi density)
OT-S521A
128 x 160 pixels (~114 ppi density)
OS
1L (2021)
Android 11 (Go edition)
OT-S521A
-
Chipset
1L (2021)
Mediatek MT6761D Helio A20 (12 nm)
OT-S521A
-
CPU
1L (2021)
Quad-core 1.8 GHz Cortex-A53
OT-S521A
-
GPU
1L (2021)
PowerVR GE8320
OT-S521A
-
Card slot
1L (2021)
microSDXC (uses shared SIM slot)
OT-S521A
No
Internal
1L (2021)
32GB 2GB RAM
OT-S521A
2MB
Other
1L (2021)
eMMC 5.1
OT-S521A
-
Phonebook
1L (2021)
-
OT-S521A
800 entries
Call records
1L (2021)
-
OT-S521A
20 dialed, 20 received, 20 missed calls
Dual
1L (2021)
13 MP, f/1.9, 27mm (wide), 1/3.06", 1.12µm, AF 2 MP (macro)
OT-S521A
-
Features
1L (2021)
LED flash, HDR, panorama
OT-S521A
-
Video
1L (2021)
1080p@30fps
OT-S521A
No
Single
1L (2021)
-
OT-S521A
VGA
Single
1L (2021)
5 MP, f/2.2, 27mm (wide), 1/5.0", 1.12µm
OT-S521A
-
Features
1L (2021)
HDR
OT-S521A
-
Video
1L (2021)
1080p@30fps
OT-S521A
-
Other
1L (2021)
-
OT-S521A
No
Loudspeaker
1L (2021)
Yes
OT-S521A
Yes
3.5mm jack
1L (2021)
Yes
OT-S521A
No
WLAN
1L (2021)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
OT-S521A
No
Bluetooth
1L (2021)
5.0, A2DP, LE
OT-S521A
No
Positioning
1L (2021)
GPS, GLONASS, GALILEO, BDS
OT-S521A
No
NFC
1L (2021)
No
OT-S521A
-
Radio
1L (2021)
FM radio
OT-S521A
No
USB
1L (2021)
microUSB 2.0, OTG
OT-S521A
miniUSB 2.0
Sensors
1L (2021)
Fingerprint (rear-mounted), accelerometer, proximity
OT-S521A
Messaging
1L (2021)
-
OT-S521A
SMS, MMS
Browser
1L (2021)
-
OT-S521A
WAP 2.0/xHTML
Games
1L (2021)
-
OT-S521A
2
Java
1L (2021)
-
OT-S521A
No
Other
1L (2021)
-
OT-S521A
MP3/AAC+ player Organizer Voice memo Predictive text input
Type
1L (2021)
Li-Ion 3000 mAh
OT-S521A
Removable Li-Ion 750 mAh battery
Stand-by
1L (2021)
-
OT-S521A
Up to 400 h
Talk time
1L (2021)
-
OT-S521A
Up to 10 h
Colors
1L (2021)
Power Grey, Twilight Blue
OT-S521A
Dark grey, Cherry red
Models
1L (2021)
4063F, 4063T
OT-S521A
-
Price
1L (2021)
About 110 EUR
OT-S521A
-
SAR
1L (2021)
-
OT-S521A
1.15 W/kg (head) 1.17 W/kg (body)