Samsung Galaxy S26 Ultra vs Galaxy S10 Plus: Ultra Power Meets S Series Legacy

The Samsung Galaxy S26 Ultra and Galaxy S10 Plus represent two different generations of Samsung ultra-premium flagships — seven years apart. Samsung's Ultra flagship pushes every spec to its maximum — the largest screen, the highest resolution camera, the most RAM, and the most features for $1,299. The Galaxy S10 Plus, Samsung's 2019 flagship, was the first S series phone with an Infinity-O display for $999.

At $1,299 for the Galaxy S26 Ultra and $999 for the Galaxy S10 Plus (original price), these are direct competitors from different eras. Samsung offers maximum hardware capability in the S26 Ultra, while the S10 Plus offers the legacy of the S series design.

Design and Build Quality

The Samsung Galaxy S26 Ultra features a titanium frame with Gorilla Armor 2 glass protection. The S26 Ultra measures 162.3 x 77.4 x 8.6mm and weighs 233g — one of the largest flagship phones available. The integrated S Pen silo adds functionality.

The Galaxy S10 Plus features an aluminum frame with Gorilla Glass 6 protection. The S10 Plus measures 157.7 x 74.1 x 7.8mm and weighs 175g — smaller and lighter.

The Galaxy S26 Ultra wins on build quality and materials. The S10 Plus wins on lighter weight and compactness.

Display

Samsung Galaxy S26 Ultra Display:

6.9-inch Dynamic AMOLED 2X
2,600 nits peak brightness
120Hz adaptive refresh rate (1-120Hz)
QHD+ resolution (3120 x 1440)
Gorilla Armor 2 protection

Galaxy S10 Plus Display:

6.4-inch Dynamic AMOLED 2X
1,200 nits peak brightness
60Hz refresh rate
QHD+ resolution (1440 x 3040)
Gorilla Glass 6 protection

The Galaxy S26 Ultra's display is much brighter (2,600 vs 1,200 nits) and has a higher refresh rate (120Hz vs 60Hz). The S10 Plus has a smaller display (6.4 vs 6.9 inches).

Samsung S26 Ultra wins on display brightness and refresh rate.

Camera System

Samsung Galaxy S26 Ultra Camera:

200MP main sensor (f/1.7, OIS)
12MP ultrawide (f/2.2, 120°)
50MP telephoto (f/3.4, 5x optical zoom, OIS)
10MP telephoto (f/2.4, 3x optical zoom, OIS)
12MP front camera (f/2.2)

Galaxy S10 Plus Camera:

12MP main sensor (f/1.5-2.4, OIS)
16MP ultrawide (f/2.2, 123°)
12MP telephoto (f/2.1, 2x optical zoom, OIS)
10MP + 8MP front cameras (f/2.2)

The Galaxy S26 Ultra's camera system is dramatically superior. The 200MP main sensor (vs 12MP) captures vastly more detail, and the dual telephoto system (5x + 3x) provides far better zoom capability.

Samsung S26 Ultra wins on camera hardware and image quality by an enormous margin.

Performance

Samsung Galaxy S26 Ultra Performance:

Snapdragon 8 Elite Gen 2 (3nm TSMC)
12GB RAM
256GB / 512GB / 1TB storage (UFS 4.0)
S Pen support (built-in)

Galaxy S10 Plus Performance:

Snapdragon 855 (7nm)
8GB / 12GB RAM
128GB / 512GB / 1TB storage (UFS 2.1)

The Samsung Galaxy S26 Ultra's processor is dramatically faster (Gen 2 vs 855). The S26 Ultra has faster storage (UFS 4.0 vs 2.1) and S Pen support.

Samsung S26 Ultra wins on processor performance, storage speed, and S Pen functionality.

Battery Life and Charging

Samsung Galaxy S26 Ultra Battery:

5,000mAh battery
45W wired fast charging
15W wireless charging

Galaxy S10 Plus Battery:

4,100mAh battery
15W wired fast charging
15W wireless charging

The Galaxy S26 Ultra has a larger battery (5,000 vs 4,100mAh) and much faster charging (45W vs 15W).

Samsung S26 Ultra wins on battery capacity and charging speed.

Software Experience

The Galaxy S26 Ultra runs Android 15 with One UI 7, including all the latest AI features. The S10 Plus runs Android 12 with One UI 4.

Samsung S26 Ultra wins on software features and AI capabilities.

Value Proposition

The Samsung Galaxy S26 Ultra at $1,299 offers maximum hardware capability. The Galaxy S10 Plus at $999 (original) offers legacy S series functionality.

Choose the Samsung Galaxy S26 Ultra if you want the absolute best in every metric. The S26 Ultra is the phone for users who want the best camera, display, and performance available.

Choose the Galaxy S10 Plus if you want the S series experience with larger display and dual front cameras. The S10 Plus is for users who prefer the S series legacy.

Final Verdict

The Samsung Galaxy S26 Ultra vs Galaxy S10 Plus comparison is a contest between modern excellence and legacy functionality. The S26 Ultra wins on camera, battery, performance, brightness, build quality, and S Pen functionality. The S10 Plus wins on lighter weight, compactness, and dual front cameras.

The Galaxy S26 Ultra is the objectively better phone. For users who want the best smartphone experience, the S26 Ultra is the clear choice.

The Galaxy S10 Plus is the legacy choice. For users who prefer the S series experience with larger display and dual front cameras, the S10 Plus remains a powerful option.

Both phones are exceptional. The Galaxy S26 Ultra is the better phone. The S10 Plus is the legacy choice.