Samsung Galaxy S21 Ultra

Quick Facts

Feature	Details
Launch Year	2021
Display	6.8-inch Quad HD+ Dynamic AMOLED 2X Infinity-O Display
Processor	Exynos 2100 / Snapdragon 888, depending on market
Camera System	108MP Wide + 12MP Ultra Wide + 10MP Telephoto + 10MP Telephoto
Battery	5,000mAh
Storage Options	12GB or 16GB RAM / 128GB, 256GB or 512GB Storage
Charging Port	USB-C
Weight	229g

Overview

The Samsung Galaxy S21 Ultra is the premium model in the Galaxy S21 series, designed for users who want a large display, stronger camera hardware, 5G connectivity and flagship Samsung performance.

It features a 6.8-inch Quad HD+ Dynamic AMOLED 2X Infinity-O display, adaptive 120Hz refresh rate, Exynos 2100 or Snapdragon 888 processor depending on market, quad rear camera system, 40MP front camera, 5,000mAh battery, USB-C charging, wireless charging, Wireless PowerShare, IP68 water resistance and 5G support.

Compared with the Galaxy S21 and Galaxy S21+, the Galaxy S21 Ultra has a sharper Quad HD+ display, larger 5,000mAh battery, stronger 108MP camera system, dual telephoto lenses, 40MP front camera and S Pen compatibility. It is suitable for users who want a large Samsung flagship for photography, videos, browsing, mobile banking, social media, multitasking and productivity.

The Galaxy S21 Ultra supports S Pen input, but the S Pen is not built into the phone body. Users who want a built-in S Pen should compare it with the Galaxy Note20 Ultra or newer Galaxy S Ultra models with integrated S Pen support.

Key Highlights

6.8-inch Quad HD+ 120Hz Display

The Galaxy S21 Ultra has a 6.8-inch Quad HD+ Dynamic AMOLED 2X display with adaptive 120Hz refresh rate.

Why it matters:

• Large and sharp display for videos, reading and multitasking

• Quad HD+ resolution gives clearer text and images

• Adaptive 120Hz refresh rate gives smoother scrolling

• AMOLED display gives strong contrast and vibrant colours

• Good option for users who want a premium large Samsung display

108MP Quad Camera System

The Galaxy S21 Ultra has a quad rear camera system led by a 108MP Wide camera with dual telephoto lenses.

Why it matters:

• Stronger camera system than the standard Galaxy S21 models

• 108MP camera is useful for detailed photos and cropping

• Ultra Wide camera is useful for scenery, interiors and group photos

• Dual telephoto lenses help with closer shots and long-range zoom

• Suitable for users who care about camera flexibility

5G with S Pen Compatibility

The Galaxy S21 Ultra supports 5G connectivity and S Pen input.

Why it matters:

• Faster mobile data where 5G coverage is available

• More future-ready than older 4G-only Samsung phones

• S Pen support is useful for notes, drawing and document markup

• Suitable for productivity and creative use

• First Galaxy S Ultra model to support S Pen input

Key Features Explained

Feature	Specification	Why It Matters
Display	6.8-inch Quad HD+ Dynamic AMOLED 2X Infinity-O Display	Large premium display for browsing, videos and productivity
Display Resolution	3200 x 1440	High-resolution screen for clearer text, images and videos
Refresh Rate	Adaptive 120Hz	Smoother scrolling while adjusting refresh rate based on content
Processor	Exynos 2100 / Snapdragon 888, depending on market	Former flagship processor suitable for daily apps and multitasking
RAM & Storage	12GB or 16GB RAM / 128GB, 256GB or 512GB Storage	Strong memory and storage options for apps, photos, videos and files
microSD Support	Not Supported	Important to note if you need expandable storage
Rear Camera System	108MP Wide + 12MP Ultra Wide + 10MP Telephoto + 10MP Telephoto	Premium camera setup for detailed photos, wide shots and zoom
Main Camera	108MP Wide with OIS	Useful for detailed photos and cropping
Ultra Wide Camera	12MP Ultra Wide	Useful for scenery, group shots and tight spaces
Telephoto Cameras	Dual 10MP Telephoto Cameras	Useful for portraits, closer framing and long-range zoom
Front Camera	40MP Selfie Camera	Higher-resolution selfie camera for photos and video calls
Video Recording	8K Video Recording up to 24fps	High-resolution video capture for advanced users
Battery	5,000mAh	Large battery capacity for a flagship phone
Charging	USB-C with 25W Super Fast Charging support	Faster wired charging with a compatible charger
Wireless Charging	Supported	Convenient charging without cable
Wireless PowerShare	Supported	Can share battery with compatible Qi devices
S Pen Support	Supported, sold separately	Useful for notes, drawing and document markup
Water Resistance	IP68	Protection against dust and accidental water exposure
Network	5G	Faster mobile data where 5G coverage is available
Weight	229g	Large and premium Ultra-series body

Compare the Galaxy S21 Series

Feature	Galaxy S21	Galaxy S21+	Galaxy S21 FE	Galaxy S21 Ultra
Launch Year	2021	2021	2022	2021
Display	6.2-inch Dynamic AMOLED 2X	6.7-inch Dynamic AMOLED 2X	6.4-inch Dynamic AMOLED 2X	6.8-inch Dynamic AMOLED 2X
Display Resolution	2400 x 1080	2400 x 1080	2340 x 1080	3200 x 1440
Refresh Rate	Adaptive 120Hz	Adaptive 120Hz	120Hz	Adaptive 120Hz
Processor	Exynos 2100 / Snapdragon 888	Exynos 2100 / Snapdragon 888	Exynos 2100 / Snapdragon 888	Exynos 2100 / Snapdragon 888
RAM & Storage	8GB / 128GB or 256GB	8GB / 128GB or 256GB	6GB or 8GB / 128GB or 256GB	12GB or 16GB / up to 512GB
Rear Camera System	12MP + 12MP + 64MP	12MP + 12MP + 64MP	12MP + 12MP + 8MP	108MP + 12MP + 10MP + 10MP
Front Camera	10MP	10MP	32MP	40MP
Battery	4,000mAh	4,800mAh	4,500mAh	5,000mAh
S Pen Support	Not Supported	Not Supported	Not Supported	Supported
microSD Support	Not Supported	Not Supported	Not Supported	Not Supported
Network	5G	5G	5G	5G
Water Resistance	IP68	IP68	IP68	IP68
Weight	169g / 171g	200g / 202g	177g	229g
Best Advantage	Compact S21 flagship	Larger display and battery	FE value with larger battery	Best S21 camera, display and S Pen support

Which Galaxy S21 Model Should You Choose?

Model	Recommended For
Galaxy S21	Users who want the most compact Galaxy S21 model
Galaxy S21+	Users who want a larger display and bigger battery
Galaxy S21 FE	Users who want S21-style features with better value
Galaxy S21 Ultra	Users who want the best S21 camera system, display, battery and S Pen support

Alternatives to the Galaxy S21 Ultra

If you’re considering the Galaxy S21 Ultra, you may also want to compare:

• Samsung Galaxy S21 Plus

• Samsung Galaxy S21 FE

• Samsung Galaxy S22 Ultra

• Samsung Galaxy Note 20 Ultra 5G

• Apple iPhone 13 Pro Max

• Apple iPhone 14 Pro Max

Comparing similar models can help you decide whether you need built-in S Pen storage, newer software support, stronger camera processing, better battery life, iOS, or a more compact phone.

Common Questions

Is the Samsung Galaxy S21 Ultra good for everyday use?

The Galaxy S21 Ultra is suitable for everyday use such as calls, messaging, browsing, email, mobile banking, photos, video watching, gaming and social media. It is also suitable for users who want a large display, strong camera system and S Pen compatibility.

Does the Galaxy S21 Ultra support 5G?

Yes. The Galaxy S21 Ultra supports 5G where network coverage and carrier support are available.

Does the Galaxy S21 Ultra support S Pen?

Yes. The Galaxy S21 Ultra supports S Pen input, but the S Pen is sold separately and there is no built-in S Pen slot. Users who want a built-in S Pen should consider the Galaxy Note20 Ultra or newer Galaxy S Ultra models with integrated S Pen storage.

Does the Galaxy S21 Ultra support microSD card?

No. The Galaxy S21 Ultra does not support microSD card expansion. Choose the storage size carefully, especially if you store many photos, videos or apps.

Is the Galaxy S21 Ultra better than the Galaxy S21?

Yes. The Galaxy S21 Ultra has a larger and sharper Quad HD+ display, bigger 5,000mAh battery, stronger 108MP quad camera system, 40MP front camera, more RAM options and S Pen support. The Galaxy S21 is smaller, lighter and easier to carry.

Is the Galaxy S21 Ultra worth buying in Singapore?

The Galaxy S21 Ultra is worth considering if you want a premium Samsung phone with 5G, large 120Hz AMOLED display, strong camera system, wireless charging, IP68 water resistance and S Pen support. For built-in S Pen storage, newer processor and longer software support, newer Galaxy S Ultra models may be better options.

Why Buy the Samsung Galaxy S21 Ultra?

The Samsung Galaxy S21 Ultra is suitable for users who want a premium Samsung flagship with a large display, strong camera system, 5G connectivity and S Pen support. It offers a 6.8-inch Quad HD+ Dynamic AMOLED 2X display, adaptive 120Hz refresh rate, Exynos 2100 or Snapdragon 888 processor depending on market, up to 16GB RAM, up to 512GB storage, 108MP quad rear camera system, 40MP front camera, 5,000mAh battery, USB-C charging, wireless charging, Wireless PowerShare, IP68 water resistance and a premium Ultra-series body.

Compare available Galaxy S21 Ultra listings by colour, storage capacity, condition and warranty from verified local sellers on SellUp Marketplace.