Screen size
Galaxy Tab S12 UltraWinner: 14.6"+85%
Z650i2.2"
Quick verdict
Galaxy Tab S12 Ultra leads the measured specs 20-1.
Measured wins
Galaxy Tab S12 Ultra
20
spec wins
Overall winner
Ties
2
equal specs
Z650i
1
spec wins
Screen size
Technology
Galaxy Tab S12 Ultra
GSM / HSPA / LTE / 5G
Z650i
GSM / UMTS
2G bands
Galaxy Tab S12 Ultra
GSM 850 / 900 / 1800 / 1900
Z650i
GSM 900 / 1800 / 1900
3G bands
Galaxy Tab S12 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Z650i
UMTS 2100
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
equal specsStereo speakers
Z650i
-
5G bands
Galaxy Tab S12 Ultra
SA/NSA/Sub6
Z650i
-
Speed
Galaxy Tab S12 Ultra
HSPA, LTE, 5G - cellular model only
Z650i
Yes, 384 kbps
Announced
Galaxy Tab S12 Ultra
2026, September 30
Z650i
2006, October
Status
Galaxy Tab S12 Ultra
Released Oct 7, 2026
Z650i
Discontinued
Dimensions
Galaxy Tab S12 Ultra
326.3 x 208.5 x 5.1 mm (12.85 x 8.21 x 0.20 in)
Z650i
101 x 51 x 15.9 mm (3.98 x 2.01 x 0.63 in)
Weight
Galaxy Tab S12 Ultra
692 g or 695 g (1.53 lb)
Z650i
95 g (3.35 oz)
Build
Galaxy Tab S12 Ultra
Glass front, aluminum frame, aluminum back
Z650i
-
SIM
Galaxy Tab S12 Ultra
Nano-SIM + eSIM (cellular model only)
Z650i
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
Z650i
-
Type
Galaxy Tab S12 Ultra
Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)
Z650i
TFT, 256K colors
Size
Galaxy Tab S12 Ultra
14.6 inches, 617.8 cm2 (~90.8% screen-to-body ratio)
Z650i
2.2 inches, 15.0 cm2 (~29.1% screen-to-body ratio)
Resolution
Galaxy Tab S12 Ultra
1848 x 2960 pixels, 16:10 ratio (~239 ppi density)
Z650i
240 x 320 pixels, 4:3 ratio (~182 ppi density)
OS
Galaxy Tab S12 Ultra
Android 17, up to 7 major OS updates, One UI 9
Z650i
-
Chipset
Galaxy Tab S12 Ultra
MediaTek Dimensity 9500 (3 nm)
Z650i
-
CPU
Galaxy Tab S12 Ultra
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
Z650i
-
GPU
Galaxy Tab S12 Ultra
Mali-G1 Ultra MC12
Z650i
-
Card slot
Galaxy Tab S12 Ultra
microSDXC (dedicated slot)
Z650i
microSD (dedicated slot)
Internal
Galaxy Tab S12 Ultra
256GB 12GB RAM, 512GB 12GB RAM, 1TB 16GB RAM
Z650i
10MB
Other
Galaxy Tab S12 Ultra
UFS
Z650i
-
Phonebook
Galaxy Tab S12 Ultra
-
Z650i
1000 entries
Call records
Galaxy Tab S12 Ultra
-
Z650i
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)
Z650i
-
Features
Galaxy Tab S12 Ultra
LED flash, HDR, panorama
Z650i
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
Z650i
320p
Single
Galaxy Tab S12 Ultra
-
Z650i
2 MP
Single
Galaxy Tab S12 Ultra
12 MP, f/2.4, 120˚ (ultrawide)
Z650i
Yes
Features
Galaxy Tab S12 Ultra
HDR
Z650i
-
Video
Galaxy Tab S12 Ultra
4K@30fps, 1080p@30fps
Z650i
Loudspeaker
Galaxy Tab S12 Ultra
Yes, with stereo speakers (4 speakers)
Z650i
Yes
3.5mm jack
Galaxy Tab S12 Ultra
No
Z650i
No
Alert types
Galaxy Tab S12 Ultra
-
Z650i
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
Z650i
No
Bluetooth
Galaxy Tab S12 Ultra
6.0, A2DP, LE
Z650i
2.0, A2DP
Positioning
Galaxy Tab S12 Ultra
GPS, GLONASS, BDS, GALILEO
Z650i
No
NFC
Galaxy Tab S12 Ultra
No
Z650i
-
Radio
Galaxy Tab S12 Ultra
No
Z650i
No
USB
Galaxy Tab S12 Ultra
USB Type-C 3.2, magnetic connector
Z650i
Proprietary
Sensors
Galaxy Tab S12 Ultra
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Z650i
Other
Galaxy Tab S12 Ultra
Wireless Samsung DeX (desktop experience support)
Z650i
MP3/AAC/AAC+/e-AAC+ player Predictive text input Document viewer (Word, Excel, PowerPoint, PDF) Organizer
Messaging
Galaxy Tab S12 Ultra
-
Z650i
SMS, EMS, MMS, Email
Browser
Galaxy Tab S12 Ultra
-
Z650i
iMode
Games
Galaxy Tab S12 Ultra
-
Z650i
Yes + downloadable
Java
Galaxy Tab S12 Ultra
-
Z650i
Yes, DoJa 2.5
Type
Galaxy Tab S12 Ultra
Li-Po 11600 mAh
Z650i
Removable Li-Ion 900 mAh battery
Charging
Galaxy Tab S12 Ultra
45W wired, 100% in 95 min
Z650i
-
Stand-by
Galaxy Tab S12 Ultra
-
Z650i
Up to 200 h
Talk time
Galaxy Tab S12 Ultra
-
Z650i
Up to 4 h
Colors
Galaxy Tab S12 Ultra
Gray, Silver
Z650i
Black
Models
Galaxy Tab S12 Ultra
SM-X940, SM-X946
Z650i
-
SAR EU
Galaxy Tab S12 Ultra
0.47 W/kg (body)
Z650i
0.39 W/kg (head)
Price
Galaxy Tab S12 Ultra
About 1570 EUR
Z650i
-
SAR
Galaxy Tab S12 Ultra
-
Z650i
0.44 W/kg (head) 0.35 W/kg (body)