SafeRooting
Samsung J400
Samsung

Samsung J400

Released: 2008, January. Released 2008, OctoberPrice: About 80 EURStatus: Discontinued

Guide Coming Soon

We are preparing a verified guide. Contact support before attempting advanced flashing steps.

Full Specifications

SAR0.37 W/kg (head) 0.56 W/kg (body)
SIMMini-SIM
USB2.0
JavaYes, MIDP 2.0
Size2.0 inches, 12.6 cm, 2, (~25.7% screen-to-body ratio)
TypeTFT, 256K colors
WLANNo
BrandSamsung
GamesYes
ModelSamsung J400
PriceAbout 80 EUR
RadioNo
SpeedYes, 384 kbps
VideoN/A
ColorsBlack
SAR EU0.19 W/kg (head)
SingleVGA videocall camera
StatusDiscontinued
Weight101.2 g (3.56 oz)
BrowserWAP 2.0/xHTML, HTML (NetFront 3.4)
SensorsN/A
2G bandsGSM 900 / 1800 / 1900
3G bandsUMTS 2100
Internal8MB
Released2008, January. Released 2008, October
Stand-byUp to 250 h
Announced2008, January. Released 2008, October
Bluetooth2.0
Card slotmicroSD (dedicated slot)
MessagingSMS, EMS, MMS, Email
Phonebook1000 entries, Photocall
Talk timeUp to 3 h
3.5mm jackNo
Dimensions99 x 49.5 x 15.9 mm (3.90 x 1.95 x 0.63 in)
Resolution176 x 220 pixels (~141 ppi density)
TechnologyGSM / UMTS
Alert typesVibration; Downloadable polyphonic, MP3 ringtones
LoudspeakerNo
PositioningNo
Call records20 dialed, 20 received, 20 missed calls

Samsung J400 Overview

About Samsung J400 Samsung J400 is a discontinued device from Samsung's popular line of first class Android phones, released in the 2008. Samsung J400 has a wide variety of great specifications such as 8MB , as well as ultrasonic fingerprint sensor. The thing that makes this decent smartphone special is its sleek design and an amazing all-screen design with no notches at all.

Rooting Information

A verified root guide for Samsung J400 is not yet published. Avoid flashing files from unrelated device variants.

Bootloader Information

Most Android rooting methods begin with bootloader unlock. Unlocking may wipe data, affect warranty, and disable some security features.

Recovery Information

Custom recovery support depends on chipset, kernel source availability, and community builds. Fastboot-based Magisk installation can work even when TWRP is unavailable.

FAQ

Can I root the Samsung J400?

The Samsung J400 supports rooting through Magisk. You'll need to unlock the bootloader first, then flash a patched boot image. Check the rooting status card on this page for availability.

Does Samsung J400 support custom recovery (TWRP)?

Many Samsung devices support TWRP. Check our device page for recovery compatibility. If TWRP isn't available, you can still use Magisk through fastboot method.

Will rooting Samsung J400 void warranty?

Yes, rooting the Samsung J400 will void the manufacturer warranty. However, you can unroot using the stock firmware to potentially restore warranty coverage.

What Android version does Samsung J400 run?

Check the specifications section above for the current OS version and upgrade history of your Samsung J400.