Galaxy S24
6.2″ · Dynamic AMOLED 2X · 120 Hz
128 GB · Amber Yellow · UK SM-S921BZYDEUB
match
6.2″ · Dynamic AMOLED 2X · 120 Hz
128 GB · Amber Yellow · UK SM-S921BZYDEUB
Two great phones.
Different things to love.
Native 5x zoom. Built-in S Pen.

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There isn’t enough shared evidence for a weighted recommendation. Explore the verified differences below.
Published-spec match · for your selected priorities. Scores compare published capabilities, not lab-tested quality. Camera image quality and independent performance tests are not rated. See scoring
Display, Camera, Battery scoring is unavailable for this pair. Known hardware specs still appear below. We do not fill missing inputs with estimates.
See each difference separately. Select a topic for its sources and conditions.
Bar length shows the stated amount. Use your priorities to decide which amount suits you.
Pixels per inch describe display density. This is not an overall display-quality or colour-accuracy score.
Published device weight, without a case.
Schematic balance · not a physical simulation
Bigger is a preference, not a quality score.
Relative diagonals · illustrative shape, not actual size
Dedicated telephoto reach. No digital or crop zoom.
Lens illustration · not an image-quality test
Up-to claims. Different test methods; no endurance winner.
Shared 40-hour scale · not mixed-use battery life
Different strengths. Your call.
167 g vs 214 g, before a case. Also 7.5 mm narrower.
Preference, not included in the match score.6.9″ vs 6.2″ diagonally. Larger is a preference, not an automatic win.
Preference, not included in the match score.Published facts, not hands-on recommendations. These preferences do not add extra points to the match score; no tested battery gains are inferred.
Explore the numbers behind the match.
Galaxy S24: Required display inputs are incomplete.
Galaxy S26 Ultra: Scores Samsung-published 2,600-nit peak brightness and 120Hz, plus 498.01 ppi calculated from its published resolution and full-rectangle diagonal. Brightness is not independently measured.
Explore the sourcesMake the comparison fit your life.
A great phone. An even better deal. Find the point where the value flips.
A verified reference price is needed for both phones.
Review your prioritiesForget the brand for a moment. Which set of specs feels more like you?
Manufacturer specifications. Your choice doesn’t change the comparison above.
Your selected categories: none. Scores reflect published capabilities, not hands-on testing. Manufacturer battery claims can use different test conditions. Verified specifications remain visible even where a category cannot be scored.
How we calculate scores128 GB · checked 10 Sept 2026
Comparable evidence is missing in one or more selected categories.
Required display inputs are incomplete.
Selected weight: 1.
Missing: Comparable display specifications.
Camera hardware is listed, but all inputs for the camera-capability model have not been verified.
Selected weight: 1.
Missing: Complete model-defined camera workflow evidence.
Comparable battery claim inputs are missing.
Selected weight: 1.
Missing: Playback and charging conditions.
Comparable independent CPU, GPU and sustained-performance measurements are not available here.
Selected weight: 1.
Missing: Independent benchmarks.
The published update policy is listed separately; remaining support is not converted into a quality score.
Selected weight: 1.
Missing: Comparable remaining-support scoring methodology.
Full-rectangle nominal diagonal; rounded corners reduce viewable area.
Samsungnot published
Video Playback Time (Hours, Wireless); manufacturer up-to claim. Protocols differ across brands.
Samsungnot published
not published
not published
not published
not published
not published
not published
not published
256 GB · checked 4 Sept 2026
Comparable evidence is missing in one or more selected categories.
Scores Samsung-published 2,600-nit peak brightness and 120Hz, plus 498.01 ppi calculated from its published resolution and full-rectangle diagonal. Brightness is not independently measured.
Selected weight: 1.
medium confidence · 100% model coverage86.67 × 40% = 34.67Manufacturer-published peak figure; not an independent measurement.
Samsung Newsroom UKSamsung UKSamsung UK99.01 × 35% = 34.65Samsung does not publish PPI. This value is calculated from its published 3120x1440 resolution and 6.9-inch full-rectangle diagonal.
Samsung Newsroom UKSamsung UKSamsung UK100.00 × 25% = 25.00Samsung Newsroom UKSamsung UKSamsung UKCategory score = 34.67 + 34.65 + 25.00 = 94.32
A published-capability score, not an image-quality verdict. It counts native 5x reach, Samsung's 10x optical-quality mode, four rear modules, 8K and three named pro workflows.
Selected weight: 1.
medium confidence · 100% model coverage100.00 × 25% = 25.00Samsung identifies 3x and 5x as optical zoom and 2x and 10x as Adaptive Pixel optical-quality zoom.
Samsung Newsroom UKSamsung UKSamsung Newsroom UKSamsung DeveloperSamsung Support UK100.00 × 15% = 15.00Samsung identifies 3x and 5x as optical zoom and 2x and 10x as Adaptive Pixel optical-quality zoom.
Samsung Newsroom UKSamsung UKSamsung Newsroom UKSamsung DeveloperSamsung Support UK75.00 × 35% = 26.25Counts Samsung Log, Expert RAW and recording to external USB storage. Samsung does not publish genlock support. This measures support, not output quality.
Samsung Newsroom UKSamsung UKSamsung Newsroom UKSamsung DeveloperSamsung Support UK100.00 × 5% = 5.00Samsung Newsroom UKSamsung UKSamsung Newsroom UKSamsung DeveloperSamsung Support UK100.00 × 20% = 20.00Samsung Newsroom UKSamsung UKSamsung Newsroom UKSamsung DeveloperSamsung Support UKCategory score = 25.00 + 15.00 + 26.25 + 5.00 + 20.00 = 91.25
Combines Samsung's up-to 31-hour local-720p-video estimate with its up-to-75%-in-around-30-minutes claim. Different manufacturer test methods make cross-brand confidence low.
Selected weight: 1.
low confidence · 100% model coverage88.57 × 65% = 57.57Samsung's up-to figure is an internal estimate using a locally stored 720p video on pre-release hardware; it is not mixed-use or web-browsing endurance.
Samsung UK100.00 × 35% = 35.00Derived from Samsung's up-to-75% in around 30 minutes claim with a 60W adapter; it is not a sustained charging rate.
Samsung Newsroom UKCategory score = 57.57 + 35.00 = 92.57
Samsung publishes chip identity and relative generation-over-generation claims, but no comparable cross-platform benchmark under this methodology.
Selected weight: 1.
Missing: Comparable independently measured CPU benchmark, Comparable independently measured GPU benchmark, Comparable sustained-performance test.
Samsung promises seven OS generations and seven years of security updates from global launch; this scores the published seven-year commitment at the model ceiling.
Selected weight: 1.
high confidence · 100% model coverage100.00 × 100% = 100.00Samsung promises seven OS generations and seven years of security updates from global launch; its UK business specification lists security support through 28 February 2033.
Samsung Newsroom UKSamsung Business UKCategory score = 100.00 = 100.00
Full-rectangle diagonal; Samsung states 6.7 inches accounting for rounded corners and that actual viewable area is smaller.
Samsung Newsroom UKSamsung UKManufacturer-published peak, not an independent measurement.
Samsung Newsroom UKSamsung UKManufacturer up-to claim; not mixed-use endurance.
Samsung internal estimate on pre-release hardware with a locally stored 720p video, Bluetooth earphones and default settings over LTE.
Samsung UKA normalized rate derived from an approximate manufacturer claim, not a sustained measurement. A 60W adapter is required and sold separately.
75 percent divided by approximately 30 minutes.
Samsung Newsroom UKSeven OS generations and seven years of security updates from global launch; UK security-support date is listed as 28 February 2033.
Samsung Newsroom UKSamsung Business UKSamsung lists WPC-compatible Super Fast Wireless Charging; its UK launch table does not state wattage.
Samsung Newsroom UKPublished as Wireless PowerShare, subject to Samsung's compatibility and battery-level limitations.
Samsung Newsroom UKSamsung lists the earjack as USB Type-C rather than a 3.5mm socket.
Samsung Business UKSamsung's UK comparison table marks Micro SD as N/A.
Samsung UKThe UK specification supports nano-SIM and eSIM combinations.
Samsung Business UKSamsung's lab claim is up to 1.5m of fresh water for 30 minutes; resistance is not permanent.
Samsung Newsroom UKSamsung's Adaptive Pixel optical-quality mode is not a separate native 10x lens.
Samsung Newsroom UKSamsung UKYour priorities. The real differences. All in one place.