A51's Infinity-O Display optimises visual symmetry. Now you can game, watch, surf and multi-task without interruption on a 6.5" FHD+ widescreen display—all powered by Super AMOLED technology. Enjoy a smartphone experience that minimises the bezel and maximises each inch of screen space.
*Measured diagonally, the 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 the camera cutout.
The rhythmical pattern of A51's design theme comes in smooth and elegant pastel shades including Prism Crush Black, White and Blue. A premium gloss finish adds the perfect touch of style to its sleek and slim body, perfectly blending of style with in-hand comfort.
Go ultra high-res with a 48MP Main Cam for crisp, clear photos day and night. A 123° 12MP Ultra Wide Cam captures more of the view. Choose the upgraded 5MP Macro Cam for highly refined close-ups, and make sure the subject always stands out with the 5MP Depth Camera’s multiple Live Focus effects.
Capture the wider world with the Ultra Wide Camera's wider field of vision. And with the 48MP Main Camera, your story stays bright and clear throughout the day.
Quad Cam’s built-in 5MP Macro Cam (40mm) shoots with clarity and quality, helping you bring out the ultra-fine details of your close-up shots. Apply and adjust natural background blur (Bokeh) to isolate your subject and increase its visual impact.
*Macro Camera feature supported for rear camera only.
Galaxy A51 records like a pro-level action camera utilising the Ultra Wide Camera and predictive software. Super steady gives you smooth live videos, even when your journey is on the adventurous side.*
*Results may vary depending on shooting conditions including multiple subjects, being out of focus, or moving subjects. Viewing angle adjusted down for selfie with Ultra Wide Camera. Does not support zoom function. Performance of the image stabilization may vary depending on the light condition. Only available when shooting with the Ultra Wide Camera in Full HD.
The 5MP Depth Camera lets you adjust the depth of field before and after you nail the shot. The advanced 5MP Depth Camera knocks out unwanted background noise from your images to make them look more professional.
You want your selfie to look good. So for stunning daytime looks, Galaxy A51's 32MP front camera gives you clear, high-resolution photos. And with Selfie focus to gently blur the background, your face becomes the star.
When out living life, you need a phone that can last. A 4,000mAh (typical)* battery gives you the power to stream, share and game on. And if you start running low, plug in and power up with 15W Fast Charging.
*Typical value tested under third-party laboratory condition. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated (minimum) capacity is 3,890 mAh. Actual battery life may vary depending on network environment, usage patterns and other factors.
Galaxy A51 has fast processing and spacious storage, so you can focus on now. An advanced Octa-core processor and 4GB of RAM deliver smooth and efficient performance. Download more and delete less with up to 128GB internal storage. Add even more with a 512GB microSD card.*
*MicroSD card sold separately. External memory can be used to store media (photos, video and music files) but no applications.
Maximise performance with Game Booster. Cut distractions and up your game with a dedicated interface and easy-to-reach menu. Frame Booster gives graphics smooth, life-like motion. And play at your best as Game Booster learns your usage patterns to optimise battery, temperature and memory.
Built into the phone's hardware and software from the start, Samsung Knox protects your phone from the minute it's turned on. Offering multi-layered security, it defends your most sensitive information from malware and malicious threats.
Galaxy A51 comes with high-tech biometric authentication. The On-Screen Fingerprint scanner recognises your unique fingerprint, so you are the only one who can press and unlock in one easy move.
*If you use a screen protector, make sure it allows for use of the On-screen fingerprint sensor.
Galaxy A51 adapts to your life, reducing blue light and turning on Night mode to get your eyes ready for bed. It even keeps your phone unlocked and plays music when you get in your car.* Or you can customise to your needs with My Routine.**
Get the information you need, faster, with Bixby's next-level vision intelligence. Bixby Vision is built right into your camera app to make life more efficient for you. Translate restaurant menus with ease and search for that furniture you saw at a party by simply scanning it.
One UI helps you focus on what really matters to you. Hardware and software work together, with content and features at your fingertips so you can get to them faster. Use Night Mode for a comfortable experience in the dark, and with clear and intuitive visuals using your phone is like second nature.
Enjoy peace of mind when you choose to buy a Galaxy smartphone. The Interactive diagnostics and optimisation on Samsung Members app makes it easy to tune up the performance of your devices, while our helpline lets you troubleshoot problems when you need the extra assistance.
We Currently accept:
Full Payment is required before we can dispatch your order. We can only post the address you enter at checkout.
We dispatch all orders within 1 working day of receiving payment.
All Refunds are issued back to the original payment method.
Online security is our top priority, that's why we only use PayPal to process our payments.
Don't have a PayPal account? You don't need one. As PayPal process ALL our transactions even PayPal guest orders (select 'Pay with debit or credit card' at checkout) receives PayPal's buyer protection.
PayPal keeps your payment details secure and GUARANTEE that you will receive the item you paid for or a full refund. Don't take our word for it. Read about it on their website.
Major Mobiles is GDPR compliant.
We offer a 30 day money-back guarantee on all our orders for any reason. We cover the return postage if the return is due to a fault with the device.
Click here to request a return.
We offer a 2 Year Warranty on all our products. The warranty covers any hardware or software issued that may arise within 24 months. The warranty does not cover accidental damage to the product including water, screen or cosmetic damage. We will decide at our discretion to either repair the faulty product or replace it.
Returns must be authorised by us. After notifying us of an issue with your product, we will respond within 1-2 days with further instructions. Please do NOT send back the product to us until you have received a RMA (Return Merchandise Authorisation).
All devices must be signed out of your ID before returning it and all your personal data should be removed by erasing and resetting your device.
For Apple Devices: If you are unable to access your phone (example, the screen stopped working) you can log out of your Apple ID by going to iCloud.com on another device or computer and login to your Apple ID. You will then have the option to remove the faulty device from your Apple ID account. If you setup the 'find my iPhone' feature, this needs to be signed out too before returning the phone.
All customer returned items that have been unsealed and can no longer be sold as Brand New are subject to a 10% restocking fee (Maximum £50). Items that are still sealed or faulty are exempt from any restocking fee.
Get your delivery Super Fast.
At checkout, you will have the option to have your order delivered within 1-3 days.
We offer a 30 day return policy. All orders include PayPal Purchase protection for your peace of mind that offers a full refund if you do not receive your item or it is not as expected.
All our Devices are Brand new & Sealed, Include a 2 Year warranty & unlocked to work anywhere in the world!
Samsung Galaxy A51 SIM Unlocked (Brand New)
All our devices & accessories are brand new and sealed.
All our devices are fully unlocked and designed for international use. They will work with any SIM card in the UK or abroad.
Yes. We only sell 100% Authentic devices.
Your device will contain a unique serial or IMEI number which you can verify it's authenticity with the manufacturer or at
Yes. Due to the high value of our products we require a signature upon delivery.
Once your order is dispatched, you will receive an email from the courier with tracking details and a delivery time window to ensure someone is present to sign for the package. The email will provide options for delivery if no one will be there.
We offer a 30 Day Money Back Guarantee on all our devices for any reason. We cover the return postage if the return is due to a fault with the device or the item is not as described.
Additionally, all our devices include a 2 year warranty that covers any defects.
The warranty does not include accidental damage such as water damage or shattered screen.
To get a return started, please click Returns & Warranty.
We offer free postage on all orders. This takes 3-7 business days.
Need it sooner? At checkout you will have the option to expedite the postage and have it delivered in 2-3 business days for an extra £9.90
We also offer international postage. You will see that option at checkout.
All our orders are sent fully insured and will require a signature.
We use DPD, Royal Mail or UPS to deliver our orders.
Yes, MajorMobiles is VAT registered in the UK. As soon as you place your order, you will be emailed a VAT invoice.
We accept credit cards, Debit card as well as PayPal.
A PayPal account is not required to checkout.
At checkout you will be prompted to sign or create a PayPal account. If you do not wish to, scroll below and select ' Pay with Debit or Credit card'.