Unlock Samsung SM-J400F Galaxy J4

Unlocking to USA, AT&T, T-mobile, MetroPCS, Cricket, Sprint, Verizon, Tracfone, Boost Mobile, Xfinity, etc...

Samsung SM-J400F Galaxy J4
Select original network provider Don´t select the network you are going to use
Why unlock my Samsung SM-J400F Galaxy J4?
Any network You can use any service provider in all countries
Forever The unlocking is perpetual, you can update your phone
Warranty unaffected Unlockigs by code does not void your warranty
Without losing data No affect information it contains

Unlock Samsung SM-J400F Galaxy J4 FREE remote SIM unlock

If you want to get the unlocking code for your Samsung SM-J400F Galaxy J4, we recommend you to contact to the original carrier, because it is the only way to obtain the SIM network unlock PIN for free. You must know that you need to fulfill the carrier's requirements, such as being the cell phone plan owner. Our company is dedicated to calculate unlocking codes by IMEI, we work with official unlocking servers and we send the same code as the carrier.

How to introduce the SIM network unlock PIN?

The easiest way to unlock a SM-J400F Galaxy J4 is to get the official unlock code thanks to our Samsung servers, when you put SIM cards from other network providers, the phone will require the unlock code, if you want to get it in a few hours, order it and we will send it to your email.

We must indicate that sometimes the unfreeze MCK code is needed (when attempts are wasted, the mobile will prompt the - SIM network PIN blocked. Enter SIM network PUK - ). Other different case, is if you need to use your phone in a different continent, in this case it will be requested the regional code RGCK, you should not worry, our company already knows these cases and always send you the necessary codes for a perfect unlock.

Is the re-lock possible for my Samsung SM-J400F Galaxy J4?

No, our unlock is never removed, you can update your phone as many times as you want or even reset your mobile.

Can I use my phone worldwide?

Unlocking method is for any SIM card of Spectrum, C Spire, AT&T, US Cellular, Cingular, Cricket, Nextel, Sprint, T-Mobile, Verizon, MetroPCS, Tracfone, Boost Mobile, Aio, StraightTalk, H20 Wireless, Simple Mobile, Virgin Mobile, Family Mobile, Xfinity Mobile, Viaero, Total Wireless from USA and any other country.

Why doesn't my SM-J400F Galaxy J4 allow me to make calls?

If the SM-J400F Galaxy J4 accepts the SIM card but does not allow you to send or to receive any call, it could be because the IMEI is blacklisted due to loss, theft or unpaid bills. Even if SIM unlocking is achieved, it is necessary to fix the IMEI problem contacting the carrier.

My Samsung SM-J400F Galaxy J4 does not prompt the unlock code and is locked with a United States carrier

On some occasions, the AT&T, Cricket, metroPCS and T-Mobile phones do not prompt for the unlock code and are locked with the official application Device Unlock, this app is already installed by default in the device. You have to buy the unlock and we take care of the approving authorization to unlock it. Once approved you only press the Permanent Unlock button and it will be unlocked forever.

The Samsung SM-J400F Galaxy J4 from Sprint, Verizon, Tracfone, Boost Mobile, StraightTalk or Simple Mobile from United States also do not prompt for the SIM network unlock PIN, because these phones have a blocked firmware with the carrier. Our company solves this block and removes this restriction, but it has to be unlocked with a program on the PC and our technician will help you remotely.

These are the Samsung SM-J400F Galaxy J4 versions

SM-J400G, SM-J400F, SM-J400M
How to insert the unlocking code for the Samsung SM-J400F Galaxy J4

1. - Turn on the handset on with a SIM card not accepted by the device (your new network operator)
2. - If the card has a PIN number, enter it and press OK.
3. - The device will prompt: “Network lock”, Now enter the code and press OK.
4. - Your phone will indicate: "The operation was successful", becoming permanently unlocked.

Unfreeze code: If the code in step 3 does not work, type the secondary code and press Unlock, the phone will indicate Unlock fail, now dial the code again from step 3.

Device Unlock app method:

1. - Make sure you have an active data connection via mobile data or Wi-Fi.
2.- From the Application list, tap Device Unlock, the application is pre installed in your device.
3.- Choose the Permanent Unlock.
4.- Restart the device.

Customer reviews
Unlock Samsung SM-J400F Galaxy J4 from any carrier by IMEI is rated 5.0 of 5 based on 47 Reviews.
B. W.- 17/11/2020

"The software you provided did work. Thanks"

Karol- 11/11/2020

"Hola amigos les diré que compre el servicio de desbloqueo por USB, me mandaron los pasos, pude desbloquear mi celular en minutos!"

Ric- 21/10/2020

"Quality service. Best one out there. ????"

Oliverfrom Mexico- 18/10/2020

"Me enviaron software y el cel se desbloqueó en minutos!"

Haroldfrom United States- 19/09/2020

"Good service"

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