Samsung Galaxy Tab S12+ vs Samsung J400: Which is better?

Screen size

Galaxy Tab S12+12.6"+84%

J4002.0"

Technology

Galaxy Tab S12+

GSM / HSPA / LTE / 5G

J400

GSM / UMTS

2G bands

Galaxy Tab S12+

GSM 850 / 900 / 1800 / 1900

J400

GSM 900 / 1800 / 1900

3G bands

Galaxy Tab S12+

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100

J400

UMTS 2100

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

Galaxy Tab S12+1,752 × 2,800 px+99%

J400176 × 220 px

Refresh rate

Galaxy Tab S12+120 Hz

J400—

Peak brightness

Galaxy Tab S12+1,600 nits

J400—

Pixel density

Galaxy Tab S12+262 ppi+46%

J400141 ppi

CPU speed

Galaxy Tab S12+Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)

J400—

RAM

Galaxy Tab S12+12.0 GB

J400—

Storage

Galaxy Tab S12+256 GB

J400—

Main camera

Galaxy Tab S12+13.0 MP+77%

J4003.0 MP

Front camera

Galaxy Tab S12+12.0 MP

J400—

Battery

Galaxy Tab S12+10,600 mAh+92%

J400820 mAh

Wired charging

Galaxy Tab S12+45 W

J400—

Weight

Galaxy Tab S12+553 g

J400101 g+448%

Thickness

Galaxy Tab S12+5.3 mm+200%

J40015.9 mm

IP rating

Galaxy Tab S12+IP68

J400—

Wi‑Fi

Galaxy Tab S12+wifi 6e

J400No

Bluetooth

Galaxy Tab S12+6+67%

J4002.0

USB

Galaxy Tab S12+3.2+38%

J4002.0

5G support

Galaxy Tab S12+Yes+100%

J400No

NFC

Galaxy Tab S12+No

J400—

3.5mm jack

equal specs

Galaxy Tab S12+No

J400No

SD card

equal specs

Galaxy Tab S12+Yes

J400Yes

Stereo speakers

Galaxy Tab S12+Yes

J400—

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

J400

Speed

Galaxy Tab S12+

HSPA, LTE, 5G - cellular model only

J400

Yes, 384 kbps

Announced

Galaxy Tab S12+

2026, September 30

J400

2008, January. Released 2008, October

Status

Galaxy Tab S12+

Available. Released 2026, October 07

J400

Discontinued

Dimensions

Galaxy Tab S12+

289.5 x 187.8 x 5.3 mm (11.40 x 7.39 x 0.21 in)

J400

99 x 49.5 x 15.9 mm (3.90 x 1.95 x 0.63 in)

Weight

Galaxy Tab S12+

553 g or 555 g (1.22 lb)

J400

101.2 g (3.56 oz)

Build

Galaxy Tab S12+

Glass front, aluminum frame, aluminum back

J400

SIM

Galaxy Tab S12+

Nano-SIM + eSIM (cellular model only)

J400

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

J400

Type

Galaxy Tab S12+

Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)

J400

TFT, 256K colors

Size

Galaxy Tab S12+

12.6 inches, 460.6 cm2 (~84.7% screen-to-body ratio)

J400

2.0 inches, 12.6 cm2 (~25.7% screen-to-body ratio)

Resolution

Galaxy Tab S12+

1752 x 2800 pixels, 16:10 ratio (~262 ppi density)

J400

176 x 220 pixels (~141 ppi density)

Other

Galaxy Tab S12+

J400

Second external, monochrome display (96 x 96 pixels)

Galaxy Tab S12+

Android 17, up to 7 major OS updates, One UI 9

J400

Chipset

Galaxy Tab S12+

MediaTek Dimensity 9500 (3 nm)

J400

CPU

Galaxy Tab S12+

Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)

J400

GPU

Galaxy Tab S12+

Mali-G1 Ultra MC12

J400

Card slot

Galaxy Tab S12+

microSDXC (dedicated slot)

J400

microSD (dedicated slot)

Internal

Galaxy Tab S12+

256GB 12GB RAM, 512GB 12GB RAM

J400

8MB

Other

Galaxy Tab S12+

UFS

J400

Phonebook

Galaxy Tab S12+

J400

1000 entries, Photocall

Call records

Galaxy Tab S12+

J400

20 dialed, 20 received, 20 missed calls

Single

Galaxy Tab S12+

13 MP, f/2.0, 26mm (wide), 1/3.4", 1.0µm, AF

J400

1.3 MP

Features

Galaxy Tab S12+

LED flash, HDR, panorama

J400

Video

Galaxy Tab S12+

4K@30fps, 1080p@30fps

J400

QCIF

Single

Galaxy Tab S12+

12 MP, f/2.4, 120˚ (ultrawide)

J400

VGA videocall camera

Features

Galaxy Tab S12+

HDR

J400

Video

Galaxy Tab S12+

4K@30fps, 1080p@30fps

J400

Loudspeaker

Galaxy Tab S12+

Yes, with stereo speakers (4 speakers)

J400

3.5mm jack

Galaxy Tab S12+

J400

Alert types

Galaxy Tab S12+

J400

Vibration; Downloadable polyphonic, MP3 ringtones

WLAN

Galaxy Tab S12+

Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct

J400

Bluetooth

Galaxy Tab S12+

6.0, A2DP, LE

J400

2.0

Positioning

Galaxy Tab S12+

GPS, GLONASS, BDS, GALILEO

J400

NFC

Galaxy Tab S12+

J400

Radio

Galaxy Tab S12+

J400

USB

Galaxy Tab S12+

USB Type-C 3.2, magnetic connector

J400

2.0

Sensors

Galaxy Tab S12+

Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

J400

Other

Galaxy Tab S12+

Wireless Samsung DeX (desktop experience support)

J400

MP3/AAC/AAC+/WMA player MP4/3gp player Organizer Currency converter Voice memo Predictive text input

Messaging

Galaxy Tab S12+

J400

SMS, EMS, MMS, Email

Browser

Galaxy Tab S12+

J400

WAP 2.0/xHTML, HTML (NetFront 3.4)

Games

Galaxy Tab S12+

J400

Yes

Java

Galaxy Tab S12+

J400

Yes, MIDP 2.0

Type

Galaxy Tab S12+

Li-Po 10600 mAh

J400

Removable Li-Ion 820 mAh battery

Charging

Galaxy Tab S12+

45W wired, 100% in 95 min

J400

Stand-by

Galaxy Tab S12+

J400

Up to 250 h

Talk time

Galaxy Tab S12+

J400

Up to 3 h

Colors

Galaxy Tab S12+

Gray, Silver

J400

Black

Models

Galaxy Tab S12+

SM-X840, SM-X846

J400

SAR EU

Galaxy Tab S12+

0.77 W/kg (body)

J400

0.19 W/kg (head)

Price

Galaxy Tab S12+

About 1330 EUR

J400

About 80 EUR

SAR

Galaxy Tab S12+

J400

0.37 W/kg (head) 0.56 W/kg (body)

Galaxy Tab S12+ vs J400

Which is better?

Choose Galaxy Tab S12+ for

Choose J400 for

Biggest differences

Galaxy Tab S12+

J400

Head-to-head comparison

Display

Specifications Comparison

Network

Performance

Cameras

Battery

Build

Connectivity

Display

Performance

Cameras

Battery

Build

Connectivity

Launch

Body

Display

Platform

Memory

Main Camera

Selfie camera

Sound

Comms

Features

Battery

Misc