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Samsung Galaxy A51 5G Factory Unlocked Android Cell Phone | US Version | 128GB Storage | Long-Lasting Battery for Gaming, 6.5” Infinity Display, Quad Camera | Black

4.4 4.4 out of 5 stars 327 ratings

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Brand Samsung Electronics
Operating System Android 10.0
Memory Storage Capacity 128 GB
Screen Size 6.5 Inches
Model Name Galaxy A51
Wireless Carrier Unlocked
Cellular Technology 5G
Connectivity Technology Bluetooth, Wi-Fi
Color Black
Wireless network technology GSM, Wi-Fi, CDMA, LTE

About this item

  • Fast-Charging Battery: Long-lasting 4000mAh battery retains power throughout the day so you can keep streaming, snapping, sharing & gaming; If you’re short on time and juice, Fast Charging will have you back up and running in no time
  • Quad Camera with 48MP Main Lens: Capture pro-level photos on your Samsung cellphone with the tap of a finger, from landscape shots and portraits to macro angles that reveal intricate textures and detail
  • 6.5” Super AMOLED Infinity Display: Dive into edge-to-edge color with an expansive 6.5” Infinity-O Display featuring a Super AMOLED screen that brings cinematic clarity right to your fingertips
  • Super Steady OIS/Mode: Take remarkably smooth video of fast-moving action in crisp, UHD quality; Its top-notch stability makes cell phone photos and videos look super smooth with minimal blur
  • Expandable Memory: Save all that matters with 16GB of built-in mobile memory; If you need more, you can expand storage to 512GB with a microSD card (sold separately)
  • Galaxy 5G for Everyone: With 5G, your phone now delivers mind-boggling speeds, superior connections and nearly undetectable lag times. (5G speeds vary and require optimal network and connection (factors include frequency, bandwidth, congestion); see carrier for availability)

Top Brand: SAMSUNG

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Product Description

The new Samsung Galaxy A51 5G has all the latest features you’ve been waiting for in your smartphone. With a quad cam, including a 48MP main camera, you’ll want to post every pic you take. Videos will look flawlessly smooth thanks to Super Steady OIS mode. Its spacious 6.5” Super AMOLED screen and nearly-borderless Infinity-O Display provide a large playground for everything you touch. And with Fast Charging, you can quickly dive back into your world without missing a moment of it. With 5G, your Android cellphone delivers mind-boggling speeds, superior connections with nearly undetectable lag times. Measured diagonally, the Samsung Galaxy A41 screen size is 6.5" in the full rectangle and 6.3" with accounting for the rounded corners. Actual viewable area is less due to the rounded corners and camera lens.


From the manufacturer

A51 5g
a51 5g
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A51 5G

What's in the box

  • Handset + Cling
  • STD Battery
  • Travel Adapter
  • Data Cable
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    Samsung Galaxy A51 5G Factory Unlocked Android Cell Phone | US Version | 128GB Storage | Long-Lasting Battery for Gaming, 6.5” Infinity Display, Quad Camera | Black


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    Sustainability features

    Sustainability features

    This product has sustainability features recognized by trusted certifications.

    Energy efficiency

    Conserves energy compared to similar products.

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    Customer reviews

    4.4 out of 5 stars
    327 global ratings

    Review this product

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    Customers say

    Customers find the phone has good quality, value for money, and speed. They appreciate the clear display, outstanding camera quality, and easy use. However, some customers dislike connectivity issues and fingerprint reader. There are mixed opinions on battery life.

    AI-generated from the text of customer reviews

    16 customers mention "Phone quality"16 positive0 negative

    Customers appreciate the phone's quality. They find it nice, with fast speed and vivid display. The performance is flawless, with no lag in most tasks. The phone has great functions and works just like more expensive phones.

    "...In general, the phone is nice with supercharged speed and vivid seamlessness. So far, anyway...." Read more

    "This is a very.... nice phone, but I was sent a used one by mistake when I ordered a new.. Amazon took care of this promptly.. Not much to say at..." Read more

    "...Display is amazing, battery life is really good, able to install work account and personal account on same device and meets all the security..." Read more

    "...Screaming! I paired this up with a Zizo Bolt case and it looks great and is protected pretty well...." Read more

    9 customers mention "Value for money"7 positive2 negative

    Customers appreciate the value for money of the cell phone. They say it's the best at its price and a great choice for those on a budget.

    "...smartphone, I looked on Amazon Marketplace and I eventually found a good deal...." Read more

    "The price is the best part. The sensitivity and battery are not exceptional, but very acceptable for the price...." Read more

    "A51 5G -- Mid priced but worth the savings!!..." Read more

    "Best at it’s price..." Read more

    7 customers mention "Speed"7 positive0 negative

    Customers appreciate the phone's speed and new features. They mention it charges quickly, has a fast 5G network, and has a good camera with a 48MP front and 32MP rear.

    "...In general, the phone is nice with supercharged speed and vivid seamlessness. So far, anyway...." Read more

    "...Android 10 is very smooth and quick and has some nice features...." Read more

    "...The battery life upholds itself very well and it charges quickly (even with a cord)!..." Read more

    "This phone works very well and has next to no lag in most everything it does...." Read more

    6 customers mention "Camera quality"6 positive0 negative

    Customers are satisfied with the camera and video quality. They mention it's excellent, with superb video and a clear display.

    "...The camera on this device is absolutely excellent... Bixby can't recognize several of my contacts so I returned to the google assistant and turned..." Read more

    "...Camera is also very good the only thing that was really make this phone better is to have a fingerprint scanner on the back of the phone or on the..." Read more

    "...So easy a caveman could do it! (That's me!) Camera is outstanding...." Read more

    "This phone is the best mid ranger, it looks beautiful, great camera, lots of great functions, and it works just like more expensive phones, I’m very..." Read more

    3 customers mention "Ease of use"3 positive0 negative

    Customers find the cell phone easy to use. They say it's fast and clear, and seamless to set up apps and passwords.

    "...my music, photos, contacts and all of my apps along with the passwords was seamless! So easy a caveman could do it! (That's me!)..." Read more

    "I love, love, love my new phone. It is easy to learn how to operate, take beautiful pictures. The battery life is great...." Read more

    "Speed, clarity, ease of use,." Read more

    9 customers mention "Battery life"5 positive4 negative

    Customers have mixed opinions about the battery life of the cell phone. Some say it has good battery life for daily tasks, while others report that it drains faster than expected for a premium phone.

    "...Display is amazing, battery life is really good, able to install work account and personal account on same device and meets all the security..." Read more

    "...Sadly, I noticed that the battery drains faster than I expected for a phone with a 4500 mAh battery...." Read more

    "...The battery life upholds itself very well and it charges quickly (even with a cord)!..." Read more

    "The battery goes down Way faster than expected. All else is alright thus far" Read more

    5 customers mention "Connectivity"0 positive5 negative

    Customers have issues with the phone's connectivity. They mention it doesn't work with Verizon, the 5G version would stop working, and hotspot doesn't work on this phone.

    "...Your hotspot will not work on this phone even if they tell you it will...." Read more

    "...I love the 4G version. The 5G version would stop working and you had to reboot it to make it work...." Read more

    "this was obviously a counterfit doesnt work at all" Read more

    "dont buy the A51. terrible connectivity" Read more

    3 customers mention "Fingerprint reader"0 positive3 negative

    Customers have issues with the fingerprint reader. It's not perfect and can't read fingerprints properly. The face recognition feature barely works.

    "Fingerprint reader and face recognition barely work...." Read more

    "Great phone, fingerprint sensor isn't perfect but ok. The phone functions very well and it's fast" Read more

    "...If you put a screen protector on the screen, it wont read your fingerprint. I have lost all my information, calendar, photos, ect...." Read more

    Premium Phone with Bad Battery (so far)!
    5 out of 5 stars
    Premium Phone with Bad Battery (so far)!
    At first, I was skeptical about buying used cell phones. However, I needed a phone soon, and I am on a budget, so I did not want to overspend for this phone at brand new. It cost less than half the new version price, so why not, right?I took the plunge and bought this phone used from Olympic Wireless, mostly because I wanted this particular phone and there weren't too many other options. I did receive comfort knowing that the U.S. version allowed me to claim warranties for several weeks in the case of a return and confirmation that the quality would stand slightly higher than an international version. I had issues with my last cellphone, and I think many of the problems came from its internal build quality. I was surprised by how well the phone looked and acted. I could not tell that the phone was used at all, except for a slight scratch in the upper right corner. With a case, I will not even notice it. The phone setup experience made the phone appear brand new. I have only had the phone for about a week, but, so far, I have tried everything I can think of to test the phone, and so far, all its features work as if it was new. In general, the phone is nice with supercharged speed and vivid seamlessness. So far, anyway.Sadly, I noticed that the battery drains faster than I expected for a phone with a 4500 mAh battery. It charges faster than I expect, but it should not drain in less than a day with average use. It also gets peculiarly hot, even when I am simply scrolling through simple apps, which attacks the credibility of its "adaptive battery." The last downside is that it came with a cheap charging cable, but that is a minimal fix and nothing unexpected from a used cellphone. I recommend this phone for someone trying to save money on midrange smartphones. Everything about this used phone is the same, except for the unbelievable price they attached to it. Once again, though, its battery may change my mind if anything goes downhill soon.
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    Top reviews from the United States

    • Reviewed in the United States on July 2, 2021
      At first, I was skeptical about buying used cell phones. However, I needed a phone soon, and I am on a budget, so I did not want to overspend for this phone at brand new. It cost less than half the new version price, so why not, right?
      I took the plunge and bought this phone used from Olympic Wireless, mostly because I wanted this particular phone and there weren't too many other options. I did receive comfort knowing that the U.S. version allowed me to claim warranties for several weeks in the case of a return and confirmation that the quality would stand slightly higher than an international version. I had issues with my last cellphone, and I think many of the problems came from its internal build quality. I was surprised by how well the phone looked and acted. I could not tell that the phone was used at all, except for a slight scratch in the upper right corner. With a case, I will not even notice it. The phone setup experience made the phone appear brand new. I have only had the phone for about a week, but, so far, I have tried everything I can think of to test the phone, and so far, all its features work as if it was new. In general, the phone is nice with supercharged speed and vivid seamlessness. So far, anyway.
      Sadly, I noticed that the battery drains faster than I expected for a phone with a 4500 mAh battery. It charges faster than I expect, but it should not drain in less than a day with average use. It also gets peculiarly hot, even when I am simply scrolling through simple apps, which attacks the credibility of its "adaptive battery." The last downside is that it came with a cheap charging cable, but that is a minimal fix and nothing unexpected from a used cellphone. I recommend this phone for someone trying to save money on midrange smartphones. Everything about this used phone is the same, except for the unbelievable price they attached to it. Once again, though, its battery may change my mind if anything goes downhill soon.
      Customer image
      5.0 out of 5 stars
      Premium Phone with Bad Battery (so far)!

      Reviewed in the United States on July 2, 2021
      At first, I was skeptical about buying used cell phones. However, I needed a phone soon, and I am on a budget, so I did not want to overspend for this phone at brand new. It cost less than half the new version price, so why not, right?
      I took the plunge and bought this phone used from Olympic Wireless, mostly because I wanted this particular phone and there weren't too many other options. I did receive comfort knowing that the U.S. version allowed me to claim warranties for several weeks in the case of a return and confirmation that the quality would stand slightly higher than an international version. I had issues with my last cellphone, and I think many of the problems came from its internal build quality. I was surprised by how well the phone looked and acted. I could not tell that the phone was used at all, except for a slight scratch in the upper right corner. With a case, I will not even notice it. The phone setup experience made the phone appear brand new. I have only had the phone for about a week, but, so far, I have tried everything I can think of to test the phone, and so far, all its features work as if it was new. In general, the phone is nice with supercharged speed and vivid seamlessness. So far, anyway.
      Sadly, I noticed that the battery drains faster than I expected for a phone with a 4500 mAh battery. It charges faster than I expect, but it should not drain in less than a day with average use. It also gets peculiarly hot, even when I am simply scrolling through simple apps, which attacks the credibility of its "adaptive battery." The last downside is that it came with a cheap charging cable, but that is a minimal fix and nothing unexpected from a used cellphone. I recommend this phone for someone trying to save money on midrange smartphones. Everything about this used phone is the same, except for the unbelievable price they attached to it. Once again, though, its battery may change my mind if anything goes downhill soon.
      Images in this review
      Customer image
      One person found this helpful
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    • Reviewed in the United States on January 18, 2021
      This is a very.... nice phone, but I was sent a used one by mistake when I ordered a new.. Amazon took care of this promptly.. Not much to say at present, but Samsung always makes good devices and this one is no exception. Lots of features and an excellent and very clear display...

      ADDENDUM:::::

      I have been using the phone for some time now and am very pleased thus far. So much room on this device even without an SD card... The performance is flawless.. I just loaded a HD movie to it today and it plays just beautifully, so clear.. This particular film has TrueHD on it and I have to report that the depths of the bass don't respond that well, so in this case I won't turn it up very loudly.. The speakers are great and the amplifier is rather strong... I am pleased to say I only have to have it near half to be able to hear everything perfectly. I will be testing regular AC-3 Audio soon. The quality is good enough for me to actually want a BT headset that does at least virtual 5.1 surround in order to REALLY enjoy a movie on this phone. My current headset at least has APEX.

      Be sure that when you look for an SD card that it is a top end model.. something like a Samsung EVO or EVOO Pro or Plus.. It needs to be a SDXC Class 10 U3 specification... less will cause lag on most modern devices of this type.

      The camera on this device is absolutely excellent... Bixby can't recognize several of my contacts so I returned to the google assistant and turned off most of Bixby's features.. Samsung needs to improve that app big time.

      Android 10 is very smooth and quick and has some nice features. I still prefer to use my side key to turn off and or restart the phone though so that had to be adjusted.

      Watching Escaflowne @ 1 hr 35mns 12sec - with credits in 1080p with DTS audio used 7% of the battery. This is actually quite good, and the video quality was superb.

      :::More To Come Later As I Use The Device:::
      3 people found this helpful
      Report
    • Reviewed in the United States on December 6, 2020
      Fingerprint reader and face recognition barely work. I changed the speech to text to Google and also use the Google autofill service instead of the Samsung as it was going to be too much effort to go through and redo all of my passwords. Display is amazing, battery life is really good, able to install work account and personal account on same device and meets all the security criteria that my job demands. Camera is also very good the only thing that was really make this phone better is to have a fingerprint scanner on the back of the phone or on the side of the phone that actually worked. If you are buying this phone to use on cricket, here is a word to the wise. Your hotspot will not work on this phone even if they tell you it will. I bought the exact same phone from cricket and lo and behold the hotspot and 5G works on the cricket version of this phone. Hope this information helps you.
      4 people found this helpful
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    • Reviewed in the United States on December 4, 2020
      Well I upgraded from my trusty old S6 Active that I put through absolute torture but the battery and performance was lacking.....after a lot of research I opted for the A51 5G. I've only had it a day but this is what I've experienced. Samsungs's software to move all of my music, photos, contacts and all of my apps along with the passwords was seamless! So easy a caveman could do it! (That's me!) Camera is outstanding. Speed on the 5G was giving me over 200Mbps on downloads and over 40 Mbps on uploads. Screaming! I paired this up with a Zizo Bolt case and it looks great and is protected pretty well. If I did have one thing I don't like about it is the placement of the on/off button that is mid way down on the right side below the volume up/down buttons. I guess this just takes getting used to. My phone unlocked and with T-mobile and seems to be working just fine with their network. So far I'm very pleased with this phone.
      2 people found this helpful
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