Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G

Name: Samsung Galaxy S25 Plus
Brand: Samsung
SKU: samsung-galaxy-s25-plus-version-navy
Price: 749.99 USD
Availability: InStock

Looking for an honest Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G comparison in 2026? We scored both smartphones on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Samsung Galaxy S25 Plus Version - Navy comes out ahead 81/100 to 52/100 — a 29-point gap. The widest gap is in performance, where the Samsung Galaxy S25 Plus Version - Navy pulls noticeably ahead. On price the Samsung Galaxy S21 Ultra 5G undercuts the Samsung Galaxy S25 Plus Version - Navy by 200% ($249.99 vs $749.99), which materially changes the value calculus for budget-conscious buyers.

WINNER

Samsung

Galaxy S25 Plus

81/100

$750

Buy on Amazon →Buy on eBay →

Samsung

Galaxy S21 Ultra 5G

52/100

$250

Buy on Amazon →Buy on eBay →

AI Matrix

Samsung Galaxy S25 Plus Version - Navy clearly outperforms the Samsung Galaxy S21 Ultra 5G in the smartphones category, especially in performance (benchmark 220 vs 75), scoring 81 vs 52. If you want the better overall smartphones, Samsung Galaxy S25 Plus Version - Navy is the recommended choice.

Reviewed by VersusMatrix Editorial Team|Our methodology

5 Reasons Why Samsung Galaxy S25 Plus Version - Navy Is Better

1.More built-in storage: 256GB vs 128GB
2.Faster charging: 45W vs 25W
3.Lighter: 190g vs 228g
4.Better performance score: 100 vs 9
5.Higher camera score: 90 vs 80

What are you giving up?

Picking Samsung Galaxy S25 Plus Version - Navy over Samsung Galaxy S21 Ultra 5G means trading these off.

You give up

−$500 cheaper ($249.99 vs $749.99)
−Larger battery: 5,000mAh vs 4,900mAh
−Higher-res camera: 108MP vs 50MP
−Better front camera: 40MP vs 12MP
−Larger screen: 6.8" vs 6.7"

You gain

+38g lighter (190g vs 228g)
+More storage: 256GB vs 128GB
+Faster charging: 45W vs 25W

Spec Comparison

Score Breakdown

Samsung Galaxy S25 Plus Version - NavySamsung Galaxy S21 Ultra 5G

100

Performance35% weight

Samsung Galaxy S25 Plus Version - Navy Winner

Camera20% weight

Samsung Galaxy S25 Plus Version - Navy Winner

Samsung Galaxy S25 Plus Version - Navy

Winner

✓ Pros

●Overall score 81/100 — top-tier
●More storage: 256GB vs 128GB
●Better camera quality: 94/100 vs 88/100
●Faster charging: 45W vs 25W

✗ Cons

●Smaller battery: 4,900mAh vs 5,000mAh
●Higher price: $749.99 vs $249.99

Samsung Galaxy S21 Ultra 5G

✓ Pros

●Bigger battery: 5,000mAh vs 4,900mAh
●Higher-res camera: 108MP vs 50MP
●Lower price: $249.99 vs $749.99
●Water resistant (IP68)

Spec Comparison

Spec	Samsung Galaxy S25 Plus Version - NavyW	Samsung Galaxy S21 Ultra 5G
Display	6.7"	6.8"✓
Display Type	Dynamic AMOLED 2X	Dynamic AMOLED 2X
Resolution	—	3200 x 1440 pixels
Refresh Rate	120Hz	120Hz
Brightness	—	1750nits
HDR

Who Should Buy

Buy Samsung Galaxy S25 Plus Version - Navy if…

Buy the Samsung Galaxy S25 Plus Version - Navy if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Buy Samsung Galaxy S21 Ultra 5G if…

Choose the Samsung Galaxy S21 Ultra 5G if budget is your top priority — it offers competitive specs at a lower price point.

Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G — FAQ

Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G: which is better?

Is Samsung Galaxy S25 Plus Version - Navy better than Samsung Galaxy S21 Ultra 5G?

Yes, Samsung Galaxy S25 Plus Version - Navy scores higher overall (81 vs 52).

Which is cheaper, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?

Samsung Galaxy S21 Ultra 5G is cheaper at $249.99 vs $749.99 for the Samsung Galaxy S25 Plus Version - Navy.

Who should buy the Samsung Galaxy S25 Plus Version - Navy?

Buy the Samsung Galaxy S25 Plus Version - Navy if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Who should buy the Samsung Galaxy S21 Ultra 5G?

Choose the Samsung Galaxy S21 Ultra 5G if budget is your top priority — it offers competitive specs at a lower price point.

Which has better battery life, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?

Samsung Galaxy S21 Ultra 5G has a larger battery (5,000mAh vs 4,900mAh for the Samsung Galaxy S25 Plus Version - Navy), which generally means longer use between charges.

Which has a better camera, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?

Related Comparisons

Samsung Galaxy S25 Ultra 5G

Samsung Galaxy S23 Ultra

Full Samsung Galaxy S25 Plus Version - Navy review →Full Samsung Galaxy S21 Ultra 5G review →All Samsung Smartphones →All Samsung Smartphones →

Reviewed by VersusMatrix Editorial Team

Last updated: May 10, 2026

Editorial guidelines

Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.

Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G

Galaxy S25 Plus

Galaxy S21 Ultra 5G

AI Matrix

5 Reasons Why Samsung Galaxy S25 Plus Version - Navy Is Better

What are you giving up?

You give up

You gain

Spec Comparison

Score Breakdown

Samsung Galaxy S25 Plus Version - Navy

Samsung Galaxy S21 Ultra 5G

Spec Comparison

Who Should Buy

Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G — FAQ

Samsung Galaxy S25 Plus Version - Navy vs Samsung Galaxy S21 Ultra 5G: which is better?

Is Samsung Galaxy S25 Plus Version - Navy better than Samsung Galaxy S21 Ultra 5G?

Which is cheaper, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?

Who should buy the Samsung Galaxy S25 Plus Version - Navy?

Who should buy the Samsung Galaxy S21 Ultra 5G?

Which has better battery life, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?

Which has a better camera, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?

Related Comparisons

Which is lighter, Samsung Galaxy S25 Plus Version - Navy or Samsung Galaxy S21 Ultra 5G?