Screen size
Galaxy Tab S12 UltraWinner: 14.6"+88%
X8201.8"
Quick verdict
Galaxy Tab S12 Ultra leads the measured specs 21-1.
Measured wins
Galaxy Tab S12 Ultra
21
spec wins
Overall winner
Ties
1
equal specs
X820
1
spec wins
Screen size
Technology
Galaxy Tab S12 Ultra
GSM / HSPA / LTE / 5G
X820
GSM
2G bands
Galaxy Tab S12 Ultra
GSM 850 / 900 / 1800 / 1900
X820
GSM 900 / 1800 / 1900
3G bands
Galaxy Tab S12 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
X820
-
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
3.5mm jack
equal specsSD card
Stereo speakers
X820
-
5G bands
Galaxy Tab S12 Ultra
SA/NSA/Sub6
X820
-
Speed
Galaxy Tab S12 Ultra
HSPA, LTE, 5G - cellular model only
X820
-
GPRS
Galaxy Tab S12 Ultra
-
X820
Class 10
EDGE
Galaxy Tab S12 Ultra
-
X820
Class 10
Announced
Galaxy Tab S12 Ultra
2026, September 30
X820
2006, May
Status
Galaxy Tab S12 Ultra
Released Oct 7, 2026
X820
Discontinued
Dimensions
Galaxy Tab S12 Ultra
326.3 x 208.5 x 5.1 mm (12.85 x 8.21 x 0.20 in)
X820
113 x 50 x 6.9 mm (4.45 x 1.97 x 0.27 in)
Weight
Galaxy Tab S12 Ultra
692 g or 695 g (1.53 lb)
X820
66 g (2.33 oz)
Build
Galaxy Tab S12 Ultra
Glass front, aluminum frame, aluminum back
X820
-
SIM
Galaxy Tab S12 Ultra
Nano-SIM + eSIM (cellular model only)
X820
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
X820
-
Type
Galaxy Tab S12 Ultra
Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)
X820
TFT, 256K colors
Size
Galaxy Tab S12 Ultra
14.6 inches, 617.8 cm2 (~90.8% screen-to-body ratio)
X820
1.8 inches, 35 x 28 mm, 10.2 cm2 (~18.0% screen-to-body ratio)
Resolution
Galaxy Tab S12 Ultra
1848 x 2960 pixels, 16:10 ratio (~239 ppi density)
X820
220 x 176 pixels (~157 ppi density)
OS
Galaxy Tab S12 Ultra
Android 17, up to 7 major OS updates, One UI 9
X820
-
Chipset
Galaxy Tab S12 Ultra
MediaTek Dimensity 9500 (3 nm)
X820
-
CPU
Galaxy Tab S12 Ultra
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
X820
-
GPU
Galaxy Tab S12 Ultra
Mali-G1 Ultra MC12
X820
-
Card slot
Galaxy Tab S12 Ultra
microSDXC (dedicated slot)
X820
No
Internal
Galaxy Tab S12 Ultra
256GB 12GB RAM, 512GB 12GB RAM, 1TB 16GB RAM
X820
80MB
Other
Galaxy Tab S12 Ultra
UFS
X820
3.7 MB for messages
Phonebook
Galaxy Tab S12 Ultra
-
X820
1000 entries, Photocall
Call records
Galaxy Tab S12 Ultra
-
X820
30 dialed, 30 received, 30 missed calls
Dual
Galaxy Tab S12 Ultra
13 MP, f/2.0, 26mm (wide), 1/3.4", 1.0µm, AF 8 MP, f/2.2, (ultrawide)
X820
-
Features
Galaxy Tab S12 Ultra
LED flash, HDR, panorama
X820
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
X820
CIF
Single
Galaxy Tab S12 Ultra
-
X820
2 MP
Single
Galaxy Tab S12 Ultra
12 MP, f/2.4, 120˚ (ultrawide)
X820
-
Features
Galaxy Tab S12 Ultra
HDR
X820
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
X820
-
Other
Galaxy Tab S12 Ultra
-
X820
No
Loudspeaker
Galaxy Tab S12 Ultra
Yes, with stereo speakers (4 speakers)
X820
Yes
3.5mm jack
Galaxy Tab S12 Ultra
No
X820
No
Alert types
Galaxy Tab S12 Ultra
-
X820
Vibration; Downloadable polyphonic, MP3 ringtones
WLAN
Galaxy Tab S12 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
X820
No
Bluetooth
Galaxy Tab S12 Ultra
6.0, A2DP, LE
X820
1.2, A2DP
Positioning
Galaxy Tab S12 Ultra
GPS, GLONASS, BDS, GALILEO
X820
No
NFC
Galaxy Tab S12 Ultra
No
X820
-
Radio
Galaxy Tab S12 Ultra
No
X820
No
USB
Galaxy Tab S12 Ultra
USB Type-C 3.2, magnetic connector
X820
Proprietary
Sensors
Galaxy Tab S12 Ultra
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
X820
Other
Galaxy Tab S12 Ultra
Wireless Samsung DeX (desktop experience support)
X820
MP3/AAC/AAC+ player Predictive text input Organizer Document viewer (Word, Excel, PowerPoint, PDF) TV-out Voice memo
Messaging
Galaxy Tab S12 Ultra
-
X820
SMS, EMS, MMS, Email
Browser
Galaxy Tab S12 Ultra
-
X820
WAP 2.0/xHTML
Games
Galaxy Tab S12 Ultra
-
X820
Yes + downloadable
Java
Galaxy Tab S12 Ultra
-
X820
Yes, MIDP 2.0
Type
Galaxy Tab S12 Ultra
Li-Po 11600 mAh
X820
Removable Li-Po 630 mAh battery
Charging
Galaxy Tab S12 Ultra
45W wired, 100% in 95 min
X820
-
Stand-by
Galaxy Tab S12 Ultra
-
X820
Up to 210 h
Talk time
Galaxy Tab S12 Ultra
-
X820
Up to 2 h 30 min
Colors
Galaxy Tab S12 Ultra
Gray, Silver
X820
Black/Blue, Silver, Pink
Models
Galaxy Tab S12 Ultra
SM-X940, SM-X946
X820
-
SAR EU
Galaxy Tab S12 Ultra
0.47 W/kg (body)
X820
0.64 W/kg (head)
Price
Galaxy Tab S12 Ultra
About 1570 EUR
X820
About 110 EUR
SAR
Galaxy Tab S12 Ultra
-
X820
1.19 W/kg (head) 0.28 W/kg (body)