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How To Unlock Samsung Galaxy A51 [SM-A516U] 

via IMEI Code or Remote USB...

We are following the trends of factory unlocking Samsung Phones. For that reason, UnlimitedUNLOCK has an Unlock service for all Samsung phones including the Samsung Galaxy A51 models. The Galaxy A51 5G (SM-A516U) has two great things going for it - the screen and the price. Last year, three of the top five bestselling phones worldwide were Samsung phones, according to Counterpoint Research, holding the number three, four, and five spots after the iPhone XR and 11. If you live in the US, when you think of Samsung, you probably think of the Galaxy S or Note — but the Samsung phones that sold so well were midrange Galaxy A-series phones. Samsung is making a big push to sell more of these phones in the US with the  Galaxy A51. What makes the A51 different is Samsung’s marketing budget and partnerships. It is available unlocked on Amazon and Samsung’s website, which is significant for a mid-range Samsung device, and it’s also on AT&T, Verizon, Sprint, and Xfinity Mobile. The Samsung Company doesn’t fail to positively surprise their fans with better and upgraded Samsung mobile phone devices.

Compared to the iPhone SE, the A51’s main draw is its screen, a big 6.5-inch OLED. Samsung is saying the phone is “awesome” across three specs: screen, camera, and battery life. The Galaxy A51 has its own charms. It doubles the iPhone SE's on-board storage for the SE's starting price, giving you 128GB out of the gate compared to the SE's 64GB for its cheapest model -- and it supports external storage, too. The Samsung screen is much larger, with slim bezels that make the phone feel modern and committed to little wasted space. The Samsung Galaxy A51 has a fairly large 4,000mAh battery. With a low-powered CPU and a small amount of RAM, you’d hope the device would get killer battery life. Battery life is also on par between the two phones. Both come to around 16 hours in a looping video test in airplane mode, with more lab tests on their way. The Galaxy A51 lasted about 20 minutes longer than the SE in this test.

This year, too, Samsung came forward with unforgettable and magnificent pieces of mobile phone technology. If you already are familiar with the Samsung Galaxy A51 5G, then you already know the Galaxy A51 also stands its ground on the camera front in the typical ways that Samsung phones and iPhones compare: Galaxy photos are more saturated compared to the iPhone's more natural tones. The iPhone SE benefits from optical image stabilization, but the A51's four cameras also give you more shooting options than the iPhone SE. A wide-angle lens is the one we care about most, which is absent from the SE. There’s a 12-megapixel ultrawide and a 5-megapixel macro camera, each of which is more about having fun than getting great shots. Fun is good! There’s also a “5-megapixel” depth camera that didn’t appear to do anything useful, at least as far as portrait mode is concerned. Finally, the selfie camera is 32 megapixels, and it produces photos that often look over-processed. Remove the iPhone SE from the equation and the A51 is akin to the Galaxy S20 Plus for a third of the price. Considering the A51 is substantially cheaper than any phone in the Galaxy S20 family, it's an impressive overall package. That is why the demand for these Samsung devices on the market is ever rising. A complete review can be seen on the GSMArena page.

Factory Unlock Samsung Galaxy A51 5G (A516U) via IMEI Code or Remote USB

One of the downsides of these fantastic Samsung Galaxy mobile phone devices is the price, of course. Not everyone is financially able to cover the costs for one of these devices. Well, at least not when you have to buy it without signing a contract with one of the carriers which offers them. Once you have signed the agreement you will be able to afford the Samsung Galaxy device and pay for it in monthly installments but along with that comes the SIM lock too. The SIM lock activation means that your mobile phone device can only function with the SIM card of the carrier who sold you the Samsung Galaxy and with whom you have signed the 12 or 24 months contract.

One of the bright sides is that you can always attempt to unlock your brand new Samsung Galaxy - meaning an unlock that will allow your Samsung Galaxy to function on any SIM card by any carrier anywhere (Worldwide).

So, if you have just signed a contract with your carrier and purchased a Samsung Galaxy A51 5G (SM-A516U) have a look at the SIM unlock procedure described below.


Why should you SIM unlock your Samsung Galaxy A51 5G (SM-A516U)?

And why not? Who is to say that you are bound to use one carrier with your Samsung Galaxy when you can use the services of any carrier in the world you want. You already pay the installments for the device, and you’re bound by law to do so. There is no problem with that. You want the device, and you will pay for it one way or another. But there is a problem when you have to use the services of one carrier only for two years. Let’s say that you have bought your Samsung Galaxy A51 5G (SM-A516U) from Verizon, but most of your relatives use T-Mobile. You are paying more expensive - whereas your relatives are paying less on their monthly bill and have no reception issues. The math doesn’t add up, and all logic points to the fact that you need to change the carrier.

Lucky for you, you can now perform an easy, quick, and cheap SIM unlock. You don’t have to wait for months or pay enormous fees to free your device from that restriction. All you have to do is read the instructions provided for you here, and you will be good to go and have the freedom to choose a carrier that will give you the best quality service for your budget.


What needs to be done to remove the SIM lock activation from your Samsung Galaxy A51 5G (SM-A516U)?

  1. Turn OFF your Samsung
  2. Remove the SIM card that is currently in the device from your carrier and insert a SIM card from a different carrier
  3. Turn ON your Samsung.

See if it asks for a code. If it does use the standard SIM unlock method, and if it doesn’t use the USB unlock method.

Get in touch with one of our customer support agent; they will advise you of the best SIM unlock solution for you Samsung Galaxy mobile phone device.

How To Unlock Samsung Galaxy A51 and Galaxy A516U via IMEI Code or Remote USB


Learn how to Unlock Samsung Galaxy A51 5G (SM-A516U)...

  1. Go to Settings > about phone > IMEI. Or dial *#60# and write down the correct IMEI of your Samsung Galaxy. You will need the IMEI to start the unlock procedure via UnlimitedUNLOCK to be successfully done.
  2. Visit UnlimitedUnlock SIM Unlock Services or Remote USB Unlock. Select the Country, Carrier, and Model that corresponds to your Samsung Galaxy device A51 5G (A516U)
  3. Complete the order form
  4. Insert the IMEI and provide a valid email address
  5. You will receive an unlock code via email

To be able to enter the SIM unlock code you will need to make your Samsung Galaxy ask for it. There is only one way for you to do this. Enter a SIM card from another carrier than your current one and power on your Samsung. Upon starting, you will be noted that the SIM card cannot be used and you will be prompted to enter an unlock code if you want to proceed.
Enter the SIM unlock code you received via email. Click ok, and your Samsung Galaxy will be permanently unlocked.

To complete the unlock processes using the Remote USB Unlock for your Samsung Galaxy. You will need to visit the Live Chat link you will receive via email and one of our professional techs will assist you in completing the processes.


Why is the best solution for you?

The UnlimitedUNLOCK Team is Trusted by Millions and has become an industry innovator and leader providing cellphone unlocking solutions for over 10 years. We've been helping out users from all around the world, and the SIM unlock story ends happily for all whether it is a Samsung, Motorola, ZTE, LG, Alcatel, HTC, Huawei, Sony, Pantech, or iPhone users. There is no reason to doubt this service - there are too many happy clients from all over the world who have already given feedback and are happy to confirm their success story. There is no good reason why you should not trust UnlimitedUNLOCK and have your Samsung Galaxy A51 unlocked.

If you simply have one Samsung Cell Phone to Unlock  -  Let's Get Started by choosing your phone here...



Samsung SIM Unlock Services

Delivery Time
Samsung CANADA - [DB2] All Levels [Including S10|S10+|S10e|A10e|Note 10|Note 10+| Etc.]-[NCK only] See On Service
Samsung Canada - [DB3] All Levels [Including S10|S10+|S10e|A10e|Note 10|Note 10+| Etc.] See On Service
Samsung Canada - All Levels [Including S9+| S9| S8+| S8| Note8-S8-7| Tab4-3| Ect.]-[NCK only] See On Service
Samsung Europe - [DB2] All Levels [Including S9+| S9| S8+| S8| Note8-S8-7| Tab4-3| Etc.] See On Service
Samsung Europe - [DB3] All Levels [Including S9+| S9| S8+| S8| Note8-S8-7| Tab4-3| Ect.] See On Service
Samsung USA - [DB2] All Levels [Including S10|S10+|S10e|A10e|Note 10|Note 10+| Etc.] See On Service
Samsung USA - [DB3] All Levels [Including Galaxy S20|S20+|S20 Ultra|Z Flip| Etc.] See On Service
Samsung USA - AT&T | Cricket | Xfinity | Spectrum [ALL MODELS INCLUDING Galaxy FOLD SM-F900/F/A/H] See On Service
Samsung Worldwide - [DB2] All Levels [Including S9+| S9| S8+| S8| Note8-S8-7| Tab4-3| Etc.] See On Service




Samsung Remote USB Unlock

Delivery Time
Samsung Galaxy A51 (A516U) [ALL CARRIERS NEW SECURITY]-[Remote Software] 1-30 Minutes
[Server] Samsung ALL MODELS FRP | SCLOUD REMOVAL Via SERVER [INCLUDING International Devices] 1-30 Minutes



We welcome wholesalers, resellers, distributors, cellphone stores, service centers, and eBay sellers! You can check our prices on our Wholesale Unlock Pricing page.


Please Note: Pricing is 100% negotiable, as we are the direct source for all your unlocking needs. 

If you have BULK Orders Contact Us!




Can I get my Samsung cell phone unlocked online?

Get your Samsung phone unlocked via IMEI Code or Remote USB with no threat to the device’s warranty.

  • It’s the technique that the phone producer endorses. 
  • Constant unlock assistance, valid regardless of the Samsung model.
  • Unlock your Samsung without any risks, while doing your usual thing.

Unlocking your Samsung phone doesn’t request any effort (almost). You just have to send us the phone’s IMEI number and the name of the service provider that locked it. What we’ll do is search several databases looking for your unlock code. Once found, we’ll send it to you accompanied by clear info about what you have to do to unlock the device.

Why order a Samsung Galaxy A51 5G (SM-A516U) Code?

It’s easy to switch from one provider to another

An unlocked phone basically allows you to change the network provider on your own terms, according to your requirements and priorities.

Forget about additional costs from roaming service; your finances will be happy

With an unlocked phone, all you need when you go abroad is your cell and a local SIM. That’s the smart way to call locally without being charged a fortune for roaming service.

Sell your phone at a better price

When you decide to sell your phone, you’ll get a better deal. Unlocked cells mean bigger bucks at resale. Not to mention that you can sell it abroad.

The smartest and safest way to unlock a cell phone

IMEI unlock is the recommended method to unlock your phone, since it implies genuine unlock codes from de company that has manufactured the device. Nothing fancy, no need for software or breaking the device’s case. And NO need for warranty loss.

What if there have been modifications to my Samsung phone’s software?

It doesn’t matter if your device has been modified or updated in terms of software. Our unlocking technique works regardless of the updates to the original software.

But if the phone has been subjected to any sort of modifications, we can’t guarantee anything. You have to restore the phone’s initial settings and be aware that it’s possible to have altered some important elements of the software that we needed in order to unlock it successfully.

What if my Samsung device doesn’t react to the unlock code?

First of all, you must be sure you’ve followed our instructions.

Attention! It’s important to follow these rules!

Here are some requirements you need to follow prior to ordering a Samsung Samsung Galaxy A51 5G (SM-A516U) unlock code:

  •  Be certain that your phone is locked. Just get a SIM card from another service provider and see if it shows the message to get it unlocked. If you don’t get such a message and you have no trouble calling folks, that means the phone is NOT SIM LOCKED
  •  Make sure the device you’re trying to unlock hasn’t been STOLEN or BLACKLISTED by the carrier.
  •  Make sure that the device is NOT hard locked. Contact our support team before you order in this case.
  •  Be certain that you send us the correct IMEI and that you select the original country and service provider, NOT the one you want to switch to

If you’ve done just that and the phone still doesn’t react to the unlock code, that means that the device was previously unlocked or that it doesn’t recognize the SIM. If you’re getting the messages “Network Locked”, “SIM not valid” or “Card error” you can unlock your handset with UnlimitedUNLOCK.

If you bought your Samsung in the USA and it’s locked on T-Mobile and MetroPCS, make sure you’ve put in place the Device Unlock app. Then forward your request using our Device Unlock App Service.

What do I do in case I have no idea what’s the network that my Samsung is locked to?

There’s no need for you to we've got you covered. You'll be able to get that information by using our Samsung Info Check by IMEI [Manufacturer | Country | Carrier | Serial #] in order to get your device's original network. This service is also used when you want this info for a different reason, such as buying a phone that’s been used, you can get the details you need using our original carrier check.

What do I need if I want to unlock Samsung Galaxy A51 5G (SM-A516U)?

Not much, actually. You must have your devices' correct IMEI, internet connection, and a valid email address since that’s how we’ll send you the code and information on how to use it. Then you need to have access to the device’s menu and keyboard.


Let's Get Started by choosing your Samsung Unlocking method here...

SIM Unlock Services or Remote USB Unlock



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