Galaxy S21 Ultra 5G Vs Galaxy Z Flip5

Galaxy S21 Ultra 5G
Galaxy S21 Ultra 5G
Starting at

Refurbished price:229.00

Versus €1,297.00 new

See options
Galaxy Z Flip5
Galaxy Z Flip5
Starting at

Refurbished price:357.00

Versus €1,340.00 new

See options

Ratings

The Samsung Galaxy S21 Ultra 5G, released in January 2021, and the Samsung Galaxy Z Flip5, launched in July 2023, represent distinct approaches to smartphone design and functionality. While the S21 Ultra offers a traditional, premium slab experience with a focus on advanced camera capabilities and a large display, the Z Flip5 introduces a compact, foldable clamshell design with a prominent external screen for quick interactions. Both devices run on the Android operating system, offering a familiar software experience, but cater to different user priorities.

Scores

Durability

The expected practical lifespan and software support differ between these two devices due to their respective release dates.

  • Software Longevity: The Galaxy S21 Ultra, released in January 2021, received its final major Android OS update (Android 15) in the first half of 2025, with security updates concluding around November 2025. In contrast, the Galaxy Z Flip5, launched in July 2023, is committed to four generations of Android OS upgrades (up to Android 17) and five years of security updates, extending its support until mid-2028.
  • Repairability: The Galaxy S21 Ultra received a repairability score of 3/10 from iFixit, indicating a challenging repair process due to extensive use of glue and a non-modular display cable. The Galaxy Z Flip5, while a foldable device, has a moderate repairability score of 6.5/10 or 7.5/10, with improvements like battery pull tabs making some repairs easier compared to its predecessors.
  • Practical Lifespan: Users of the S21 Ultra have reported satisfaction with its performance and durability even after 2.5 years, though software updates have now ceased. The Z Flip5, being a newer device with ongoing software support, offers a longer expected period of receiving official updates and security patches.

Performance

Both devices offer robust performance for their respective generations, handling daily tasks and demanding applications effectively.

  • Processing Power: The Galaxy S21 Ultra features a powerful processor for its time, enabling smooth multitasking and efficient handling of graphics-intensive applications. The Galaxy Z Flip5, being a newer device, incorporates a more recent generation processor, which translates to enhanced speed and efficiency for current applications and gaming.
  • System Responsiveness: Users of the S21 Ultra generally report a fluid and responsive experience, even with heavy usage. The Z Flip5 also delivers a fast and responsive user experience, with its newer processor contributing to quicker app loading and seamless transitions.
  • Storage and Multitasking: The S21 Ultra was available with up to 16GB of RAM and storage options up to 512GB, providing ample space and capacity for extensive multitasking. The Z Flip5 comes with 8GB of RAM and storage options up to 512GB, which is sufficient for most users' multitasking needs and app storage.

Memory (GB)

12 GB

8 GB

Screen quality

The display experience is a significant differentiator, with the S21 Ultra offering a large, uninterrupted screen and the Z Flip5 featuring a unique foldable design with an external display.

  • Display Technology and Resolution: The Galaxy S21 Ultra boasts a 6.8-inch Dynamic AMOLED 2X display with a high QHD+ resolution (3200x1440 pixels), providing sharp and detailed visuals. The Galaxy Z Flip5 features a 6.7-inch Foldable Dynamic AMOLED 2X main display with an FHD+ resolution (2640x1080 pixels) and a 3.4-inch Super AMOLED cover display.
  • Brightness and Refresh Rate: Both devices offer adaptive 120Hz refresh rates for smooth scrolling and animations. The S21 Ultra can reach up to 1500 nits peak brightness, while the Z Flip5's main display can achieve up to 1600 nits, ensuring good visibility in various lighting conditions.
  • Viewing Experience: The S21 Ultra provides an expansive, traditional smartphone viewing area, ideal for media consumption and productivity. The Z Flip5's foldable design offers a compact form factor when closed, and its larger cover screen allows for more functionality without opening the device, enhancing quick interactions and notifications.

Audiovisual

The camera systems on these two Samsung devices cater to different photographic needs and priorities.

  • Rear Camera System: The Galaxy S21 Ultra features a versatile quad-camera setup, including a 108 MP wide-angle lens, a 12 MP ultrawide lens, and two 10 MP telephoto lenses (3x and 10x optical zoom), offering extensive zoom capabilities. The Galaxy Z Flip5 has a dual-camera system with a 12 MP wide-angle and a 12 MP ultrawide lens.
  • Photography Performance: The S21 Ultra is known for its detailed photos, especially with its high-resolution main sensor and advanced zoom features, performing well in various lighting conditions. The Z Flip5's camera performs well in good lighting, producing vibrant images, though some users note it may not match the versatility or low-light performance of devices with more advanced camera hardware.
  • Video Recording and Front Camera: The S21 Ultra supports up to 8K video recording at 24fps and features a 40 MP front camera. The Z Flip5 records video up to 4K at 30/60fps and includes a 10 MP front camera. The Z Flip5's foldable design allows for unique camera angles and hands-free photography using its main cameras.

Miscellaneous

Beyond core features, several practical elements distinguish the S21 Ultra and Z Flip5 in daily use.

  • Connectivity and Ports: Both devices support 5G connectivity, ensuring fast mobile data speeds. The S21 Ultra and Z Flip5 utilize USB-C for charging and data transfer. Neither device includes a traditional 3.5mm headphone jack.
  • Biometric Security: The S21 Ultra features an in-screen ultrasonic fingerprint sensor for secure unlocking. The Z Flip5 incorporates a side-mounted fingerprint sensor, integrated into the power button. Both offer reliable facial recognition.
  • Design and Handling: The S21 Ultra is a larger, heavier slab phone (227g) with a premium glass and aluminum build, offering a substantial feel. The Z Flip5 is significantly lighter (187g) and, when folded, becomes very compact, making it highly portable. Its build includes Gorilla Glass Victus 2 and an aluminum frame, with an IPX8 water resistance rating, meaning it can withstand submersion but lacks dust resistance.

Screen size (in)

6.8

6.7 /3.4

Network

5G

5G

SIM card

Physical SIM + eSIM

Physical SIM + eSIM

Carrier compatibility

Unlocked

Unlocked

The Samsung Galaxy S21 Ultra 5G and Galaxy Z Flip5 cater to different user preferences, each excelling in distinct areas. Users frequently praise the S21 Ultra for its exceptional battery life, robust hardware quality, and versatile camera system, particularly its zoom capabilities. However, some users note its bulky size and weight, and the absence of a microSD card slot as potential drawbacks. The S21 Ultra's software support has also concluded, meaning it will no longer receive major Android updates or regular security patches.

Conversely, the Galaxy Z Flip5 is often lauded for its unique, compact foldable form factor, which enhances portability and offers novel usage scenarios with its large cover screen. Its performance is generally considered fast and responsive. Criticisms sometimes revolve around its battery life, which some heavy users find insufficient for a full day, and the camera system, while capable, is not as advanced as those found in traditional flagship devices. Durability concerns related to the foldable screen and hinge have also been mentioned by some users, though improvements have been made.

Users prioritizing a top-tier camera experience, a large, high-resolution display, and maximum battery capacity in a traditional smartphone form factor may find the Galaxy S21 Ultra 50G well-suited to their needs. Those who value extreme portability, a unique design, and innovative interaction possibilities with a secondary display will likely lean towards the Galaxy Z Flip5. For individuals considering either device, exploring quality-assured refurbished options can provide an eco-friendly alternative.

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