Screen size
Galaxy Tab S12 UltraWinner: 14.6"+87%
X5501.9"
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
X550
1
spec wins
Screen size
Technology
Galaxy Tab S12 Ultra
GSM / HSPA / LTE / 5G
X550
GSM
2G bands
Galaxy Tab S12 Ultra
GSM 850 / 900 / 1800 / 1900
X550
GSM 900 / 1800 / 1900
3G bands
Galaxy Tab S12 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
X550
-
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
X550
-
5G bands
Galaxy Tab S12 Ultra
SA/NSA/Sub6
X550
-
Speed
Galaxy Tab S12 Ultra
HSPA, LTE, 5G - cellular model only
X550
-
GPRS
Galaxy Tab S12 Ultra
-
X550
Class 10
EDGE
Galaxy Tab S12 Ultra
-
X550
No
Announced
Galaxy Tab S12 Ultra
2026, September 30
X550
2007, Q3. Released 2008
Status
Galaxy Tab S12 Ultra
Released Oct 7, 2026
X550
Discontinued
Dimensions
Galaxy Tab S12 Ultra
326.3 x 208.5 x 5.1 mm (12.85 x 8.21 x 0.20 in)
X550
90 x 44 x 18.8 mm (3.54 x 1.73 x 0.74 in)
Weight
Galaxy Tab S12 Ultra
692 g or 695 g (1.53 lb)
X550
75 g (2.65 oz)
Build
Galaxy Tab S12 Ultra
Glass front, aluminum frame, aluminum back
X550
-
SIM
Galaxy Tab S12 Ultra
Nano-SIM + eSIM (cellular model only)
X550
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
X550
-
Type
Galaxy Tab S12 Ultra
Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)
X550
TFT, 65K colors
Size
Galaxy Tab S12 Ultra
14.6 inches, 617.8 cm2 (~90.8% screen-to-body ratio)
X550
1.9 inches, 11.2 cm2 (~28.2% screen-to-body ratio)
Resolution
Galaxy Tab S12 Ultra
1848 x 2960 pixels, 16:10 ratio (~239 ppi density)
X550
120 x 160 pixels, 4:3 ratio (~105 ppi density)
Other
Galaxy Tab S12 Ultra
-
X550
External STN display, 96 x 96 pixels
OS
Galaxy Tab S12 Ultra
Android 17, up to 7 major OS updates, One UI 9
X550
-
Chipset
Galaxy Tab S12 Ultra
MediaTek Dimensity 9500 (3 nm)
X550
-
CPU
Galaxy Tab S12 Ultra
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
X550
-
GPU
Galaxy Tab S12 Ultra
Mali-G1 Ultra MC12
X550
-
Card slot
Galaxy Tab S12 Ultra
microSDXC (dedicated slot)
X550
No
Internal
Galaxy Tab S12 Ultra
256GB 12GB RAM, 512GB 12GB RAM, 1TB 16GB RAM
X550
2MB
Other
Galaxy Tab S12 Ultra
UFS
X550
-
Phonebook
Galaxy Tab S12 Ultra
-
X550
500 entries, Photocall
Call records
Galaxy Tab S12 Ultra
-
X550
20 dialed, 20 received, 20 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)
X550
-
Features
Galaxy Tab S12 Ultra
LED flash, HDR, panorama
X550
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
X550
No
Single
Galaxy Tab S12 Ultra
-
X550
VGA
Single
Galaxy Tab S12 Ultra
12 MP, f/2.4, 120˚ (ultrawide)
X550
-
Features
Galaxy Tab S12 Ultra
HDR
X550
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
X550
-
Other
Galaxy Tab S12 Ultra
-
X550
No
Loudspeaker
Galaxy Tab S12 Ultra
Yes, with stereo speakers (4 speakers)
X550
Yes
3.5mm jack
Galaxy Tab S12 Ultra
No
X550
No
Alert types
Galaxy Tab S12 Ultra
-
X550
Vibration; Downloadable polyphonic ringtones
WLAN
Galaxy Tab S12 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
X550
No
Bluetooth
Galaxy Tab S12 Ultra
6.0, A2DP, LE
X550
2.0
Positioning
Galaxy Tab S12 Ultra
GPS, GLONASS, BDS, GALILEO
X550
No
NFC
Galaxy Tab S12 Ultra
No
X550
-
Radio
Galaxy Tab S12 Ultra
No
X550
No
USB
Galaxy Tab S12 Ultra
USB Type-C 3.2, magnetic connector
X550
Proprietary
Sensors
Galaxy Tab S12 Ultra
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
X550
Other
Galaxy Tab S12 Ultra
Wireless Samsung DeX (desktop experience support)
X550
Predictive text input Organizer Voice memo
Messaging
Galaxy Tab S12 Ultra
-
X550
SMS, EMS, MMS
Browser
Galaxy Tab S12 Ultra
-
X550
WAP 2.0/xHTML
Games
Galaxy Tab S12 Ultra
-
X550
Yes
Java
Galaxy Tab S12 Ultra
-
X550
Yes, MIDP 2.0
Type
Galaxy Tab S12 Ultra
Li-Po 11600 mAh
X550
Removable battery
Charging
Galaxy Tab S12 Ultra
45W wired, 100% in 95 min
X550
-
Stand-by
Galaxy Tab S12 Ultra
-
X550
Up to 200 h
Talk time
Galaxy Tab S12 Ultra
-
X550
Up to 3 h
Colors
Galaxy Tab S12 Ultra
Gray, Silver
X550
Models
Galaxy Tab S12 Ultra
SM-X940, SM-X946
X550
-
SAR EU
Galaxy Tab S12 Ultra
0.47 W/kg (body)
X550
0.99 W/kg (head)
Price
Galaxy Tab S12 Ultra
About 1570 EUR
X550
About 90 EUR