Screen size
Galaxy Tab S12 UltraWinner: 14.6"+79%
Rex 80 S5222R3.0"
Quick verdict
Galaxy Tab S12 Ultra leads the measured specs 19-2.
Measured wins
Galaxy Tab S12 Ultra
19
spec wins
Overall winner
Ties
2
equal specs
Rex 80 S5222R
2
spec wins
Screen size
Technology
Galaxy Tab S12 Ultra
GSM / HSPA / LTE / 5G
Rex 80 S5222R
GSM
2G bands
Galaxy Tab S12 Ultra
GSM 850 / 900 / 1800 / 1900
Rex 80 S5222R
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Galaxy Tab S12 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Rex 80 S5222R
-
4G bands
Galaxy Tab S12 Ultra
LTE
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
NFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
Rex 80 S5222R
-
5G bands
Galaxy Tab S12 Ultra
SA/NSA/Sub6
Rex 80 S5222R
-
Speed
Galaxy Tab S12 Ultra
HSPA, LTE, 5G - cellular model only
Rex 80 S5222R
-
GPRS
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
Yes
EDGE
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
Yes
Announced
Galaxy Tab S12 Ultra
2026, September 30
Rex 80 S5222R
2013, February. Released 2013, March
Status
Galaxy Tab S12 Ultra
Released Oct 7, 2026
Rex 80 S5222R
Discontinued
Dimensions
Galaxy Tab S12 Ultra
326.3 x 208.5 x 5.1 mm (12.85 x 8.21 x 0.20 in)
Rex 80 S5222R
102 x 58 x 11.5 mm (4.02 x 2.28 x 0.45 in)
Weight
Galaxy Tab S12 Ultra
692 g or 695 g (1.53 lb)
Rex 80 S5222R
-
Build
Galaxy Tab S12 Ultra
Glass front, aluminum frame, aluminum back
Rex 80 S5222R
-
SIM
Galaxy Tab S12 Ultra
Nano-SIM + eSIM (cellular model only)
Rex 80 S5222R
Dual SIM (Mini-SIM)
Other
Galaxy Tab S12 Ultra
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus support Enhanced Armor Aluminum
Rex 80 S5222R
-
Type
Galaxy Tab S12 Ultra
Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)
Rex 80 S5222R
TFT, 256K colors
Size
Galaxy Tab S12 Ultra
14.6 inches, 617.8 cm2 (~90.8% screen-to-body ratio)
Rex 80 S5222R
3.0 inches, 27.9 cm2 (~47.1% screen-to-body ratio)
Resolution
Galaxy Tab S12 Ultra
1848 x 2960 pixels, 16:10 ratio (~239 ppi density)
Rex 80 S5222R
240 x 320 pixels, 4:3 ratio (~133 ppi density)
OS
Galaxy Tab S12 Ultra
Android 17, up to 7 major OS updates, One UI 9
Rex 80 S5222R
-
Chipset
Galaxy Tab S12 Ultra
MediaTek Dimensity 9500 (3 nm)
Rex 80 S5222R
-
CPU
Galaxy Tab S12 Ultra
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
Rex 80 S5222R
-
GPU
Galaxy Tab S12 Ultra
Mali-G1 Ultra MC12
Rex 80 S5222R
-
Card slot
Galaxy Tab S12 Ultra
microSDXC (dedicated slot)
Rex 80 S5222R
microSDHC (dedicated slot)
Internal
Galaxy Tab S12 Ultra
256GB 12GB RAM, 512GB 12GB RAM, 1TB 16GB RAM
Rex 80 S5222R
20MB
Other
Galaxy Tab S12 Ultra
UFS
Rex 80 S5222R
-
Phonebook
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
1000 entries
Call records
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
Yes
Dual
Galaxy Tab S12 Ultra
13 MP, f/2.0, 26mm (wide), 1/3.4", 1.0µm, AF 8 MP, f/2.2, (ultrawide)
Rex 80 S5222R
-
Features
Galaxy Tab S12 Ultra
LED flash, HDR, panorama
Rex 80 S5222R
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
Rex 80 S5222R
Yes
Single
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
3.15 MP
Single
Galaxy Tab S12 Ultra
12 MP, f/2.4, 120˚ (ultrawide)
Rex 80 S5222R
-
Features
Galaxy Tab S12 Ultra
HDR
Rex 80 S5222R
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
Rex 80 S5222R
-
Other
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
No
Loudspeaker
Galaxy Tab S12 Ultra
Yes, with stereo speakers (4 speakers)
Rex 80 S5222R
Yes
3.5mm jack
Galaxy Tab S12 Ultra
No
Rex 80 S5222R
Yes
WLAN
Galaxy Tab S12 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Rex 80 S5222R
Wi-Fi 802.11 b/g/n
Bluetooth
Galaxy Tab S12 Ultra
6.0, A2DP, LE
Rex 80 S5222R
3.0
Positioning
Galaxy Tab S12 Ultra
GPS, GLONASS, BDS, GALILEO
Rex 80 S5222R
No
NFC
Galaxy Tab S12 Ultra
No
Rex 80 S5222R
No
Radio
Galaxy Tab S12 Ultra
No
Rex 80 S5222R
FM radio, recording
USB
Galaxy Tab S12 Ultra
USB Type-C 3.2, magnetic connector
Rex 80 S5222R
microUSB 2.0, OTG
Sensors
Galaxy Tab S12 Ultra
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Rex 80 S5222R
Proximity
Other
Galaxy Tab S12 Ultra
Wireless Samsung DeX (desktop experience support)
Rex 80 S5222R
SNS applications MP4/H.263 player MP3/eAAC+/WAV player Organizer Predictive text input
Messaging
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
SMS, MMS, Email, IM
Games
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
Yes
Java
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
Yes
Type
Galaxy Tab S12 Ultra
Li-Po 11600 mAh
Rex 80 S5222R
Li-Ion 1000 mAh, removable
Charging
Galaxy Tab S12 Ultra
45W wired, 100% in 95 min
Rex 80 S5222R
-
Talk time
Galaxy Tab S12 Ultra
-
Rex 80 S5222R
Up to 14 h 10 min
Colors
Galaxy Tab S12 Ultra
Gray, Silver
Rex 80 S5222R
White, Gray, Blue, Red
Models
Galaxy Tab S12 Ultra
SM-X940, SM-X946
Rex 80 S5222R
GT-S5222R
SAR EU
Galaxy Tab S12 Ultra
0.47 W/kg (body)
Rex 80 S5222R
0.66 W/kg (head) 0.59 W/kg (body)
Price
Galaxy Tab S12 Ultra
About 1570 EUR
Rex 80 S5222R
About 70 EUR