Screen size
Galaxy Tab S12+Winner: 12.6"+86%
S400i1.8"
Quick verdict
Galaxy Tab S12+ leads the measured specs 21-1.
Measured wins
Galaxy Tab S12+
21
spec wins
Overall winner
Ties
1
equal specs
S400i
1
spec wins
Screen size
Technology
Galaxy Tab S12+
GSM / HSPA / LTE / 5G
S400i
GSM
2G bands
Galaxy Tab S12+
GSM 850 / 900 / 1800 / 1900
S400i
GSM 900 / 1800 / 1900
3G bands
Galaxy Tab S12+
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
S400i
-
4G bands
Galaxy Tab S12+
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
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
S400i
-
5G bands
Galaxy Tab S12+
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 71, 75, 77, 78 SA/NSA/Sub6
S400i
-
Speed
Galaxy Tab S12+
HSPA, LTE, 5G - cellular model only
S400i
-
GPRS
Galaxy Tab S12+
-
S400i
Yes
EDGE
Galaxy Tab S12+
-
S400i
Yes
Announced
Galaxy Tab S12+
2026, September 30
S400i
2006, February
Status
Galaxy Tab S12+
Available. Released 2026, October 07
S400i
Discontinued
Dimensions
Galaxy Tab S12+
289.5 x 187.8 x 5.3 mm (11.40 x 7.39 x 0.21 in)
S400i
91 x 45 x 20.9 mm (3.58 x 1.77 x 0.82 in)
Weight
Galaxy Tab S12+
553 g or 555 g (1.22 lb)
S400i
88 g (3.10 oz)
Build
Galaxy Tab S12+
Glass front, aluminum frame, aluminum back
S400i
-
SIM
Galaxy Tab S12+
Nano-SIM + eSIM (cellular model only)
S400i
Mini-SIM
Other
Galaxy Tab S12+
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus support Enhanced Armor Aluminum
S400i
-
Type
Galaxy Tab S12+
Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)
S400i
TFT, 256K colors
Size
Galaxy Tab S12+
12.6 inches, 460.6 cm2 (~84.7% screen-to-body ratio)
S400i
1.8 inches, 10.2 cm2 (~24.9% screen-to-body ratio)
Resolution
Galaxy Tab S12+
1752 x 2800 pixels, 16:10 ratio (~262 ppi density)
S400i
176 x 220 pixels (~157 ppi density)
OS
Galaxy Tab S12+
Android 17, up to 7 major OS updates, One UI 9
S400i
-
Chipset
Galaxy Tab S12+
MediaTek Dimensity 9500 (3 nm)
S400i
-
CPU
Galaxy Tab S12+
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
S400i
-
GPU
Galaxy Tab S12+
Mali-G1 Ultra MC12
S400i
-
Card slot
Galaxy Tab S12+
microSDXC (dedicated slot)
S400i
No
Internal
Galaxy Tab S12+
256GB 12GB RAM, 512GB 12GB RAM
S400i
13MB
Other
Galaxy Tab S12+
UFS
S400i
-
Phonebook
Galaxy Tab S12+
-
S400i
1000 entries, Photocall
Call records
Galaxy Tab S12+
-
S400i
20 dialed, 20 received, 20 missed calls
Single
Galaxy Tab S12+
13 MP, f/2.0, 26mm (wide), 1/3.4", 1.0µm, AF
S400i
VGA
Features
Galaxy Tab S12+
LED flash, HDR, panorama
S400i
LED flash
Video
Galaxy Tab S12+
4K@30fps, 1080p@30fps
S400i
Yes
Single
Galaxy Tab S12+
12 MP, f/2.4, 120˚ (ultrawide)
S400i
-
Features
Galaxy Tab S12+
HDR
S400i
-
Video
Galaxy Tab S12+
4K@30fps, 1080p@30fps
S400i
-
Other
Galaxy Tab S12+
-
S400i
No
Loudspeaker
Galaxy Tab S12+
Yes, with stereo speakers (4 speakers)
S400i
No
3.5mm jack
Galaxy Tab S12+
No
S400i
No
Alert types
Galaxy Tab S12+
-
S400i
Vibration; Downloadable polyphonic, AAC ringtones
WLAN
Galaxy Tab S12+
Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct
S400i
No
Bluetooth
Galaxy Tab S12+
6.0, A2DP, LE
S400i
Yes
Positioning
Galaxy Tab S12+
GPS, GLONASS, BDS, GALILEO
S400i
No
NFC
Galaxy Tab S12+
No
S400i
-
Radio
Galaxy Tab S12+
No
S400i
No
USB
Galaxy Tab S12+
USB Type-C 3.2, magnetic connector
S400i
Proprietary
Sensors
Galaxy Tab S12+
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
S400i
Other
Galaxy Tab S12+
Wireless Samsung DeX (desktop experience support)
S400i
AAC/M4A player Predictive text input Organizer Voice memo
Messaging
Galaxy Tab S12+
-
S400i
SMS, EMS, MMS, Email
Browser
Galaxy Tab S12+
-
S400i
i-mode
Games
Galaxy Tab S12+
-
S400i
Yes + downloadable
Java
Galaxy Tab S12+
-
S400i
Yes, DoJa 2.5
Type
Galaxy Tab S12+
Li-Po 10600 mAh
S400i
Removable Li-Ion battery
Charging
Galaxy Tab S12+
45W wired, 100% in 95 min
S400i
-
Stand-by
Galaxy Tab S12+
-
S400i
Up to 150 h
Talk time
Galaxy Tab S12+
-
S400i
Up to 3 h
Colors
Galaxy Tab S12+
Gray, Silver
S400i
Black
Models
Galaxy Tab S12+
SM-X840, SM-X846
S400i
-
SAR EU
Galaxy Tab S12+
0.77 W/kg (body)
S400i
0.66 W/kg (head)
Price
Galaxy Tab S12+
About 1330 EUR
S400i
-
SAR
Galaxy Tab S12+
-
S400i
0.36 W/kg (head) 0.40 W/kg (body)