Asus Zenfone 11 Ultra

 Design & Display

The Zenfone 11 Ultra features a premium build with refined materials. Measuring around 163.8 × 76.8 × 8.9 mm and weighing about 225 g, it strikes a balance between large-screen presence and manageable size. It carries an IP68 rating for dust and water resistance, enhancing durability. The glass front is protected by Corning Gorilla Glass Victus 2, which adds confidence when carried in a pocket or bag. Colour variants like Eternal Black, Skyline Blue, Misty Gray, and Desert Sand let users choose a style that suits them.

At the front is a 6.78-inch LTPO AMOLED display with Full HD+ resolution (2400 × 1080 pixels) and an adaptive refresh rate up to 144 Hz, though the regular everyday use cap is 120 Hz. This combination gives fluid motion for UI interactions, smoother scrolling, and a strong multimedia experience. The screen supports HDR10+, wide colour gamut coverage, and peak brightness levels up to about 2500 nits in some tests, making it highly legible outdoors and for HDR content.

The bezels are very slim, the display curves slightly at the edges or is subtly framed depending on variant, giving a modern look. The screen-to-body ratio is high, making use of almost the entire front of the phone for content. The overall ergonomics are good for a “large phone” but still one that users can handle comfortably in hand or pocket.

Because the display uses LTPO technology it can dynamically reduce refresh rate down to 1 Hz when static content is displayed, thereby saving power. This is a smart feature that combines both visual performance and efficiency. The colour accuracy is excellent, with wide gamut coverage and good calibration out of the box, meaning that content looks natural and well-rendered rather than overly “punchy”.

In summary, the design and display of the Zenfone 11 Ultra deliver a flagship-class experience: premium build, large immersive screen, high refresh rate and modern durability. If your key priority is great visual experience and a device that feels “top tier” in hand, this phone certainly delivers.

 Performance & Software

Under the hood the Zenfone 11 Ultra is powered by the Qualcomm Snapdragon 8 Gen 3 (4nm) chipset, which is one of the top processors in its class. Paired typically with 12 GB or 16 GB of RAM and storage options of 256 GB or 512 GB (UFS 4.0), it offers strong performance for multitasking, gaming and productivity. The hardware is designed for speed, responsiveness and future-proofing.

The software runs Android 14 (with ASUS’ ZenUI or Zen UI 11 overlay) and includes several customisations and enhancements. The UI is smooth, thanks to the high refresh display and capable hardware — switching between apps, loading games, editing content, all feel fast and seamless. The combination of high-end chip and modern RAM/storage means the device won’t feel “slow” even months down the line.

Thermal management and sustained performance appear well addressed: heavy use — such as gaming sessions, content editing, multitasking — remains smooth with minimal throttling reported in many user reviews. The phone’s architecture and cooling appear tuned to maintain performance over time. The responsive UI and strong hardware mean that whether you’re streaming, recording or gaming you’re getting a premium experience.

One trade-off: some users mention that while performance is excellent, the update policy (number of major Android versions guaranteed) may not match some of the competition. It’s wise to check regional variant details. Also, because it is a high-power device, battery life under very heavy load may still require midday top-ups in extreme usage scenarios.

All in all, performance and software for the Zenfone 11 Ultra put it firmly in the flagship tier rather than mid-range. For users who demand speed, responsiveness and longevity, it’s a great choice.

Camera System

The Zenfone 11 Ultra’s camera system is a standout feature: it offers a 50 MP main sensor (Sony IMX890) with gimbal OIS, a 32 MP telephoto lens offering 3× optical zoom, and a 13 MP ultra-wide camera with 120° field of view. The front selfie camera is 32 MP. This triple-camera configuration gives versatility: wide, zoom and ultra-wide lenses all bundled into one device.

In good lighting conditions the main camera produces sharp, detailed images with strong dynamic range and accurate colour reproduction. The gimbal stabiliser helps reduce shake, making handheld shots more reliable. Telephoto allows users to zoom in while retaining good quality, and ultra-wide gives flexibility for group shots or expansive scenes.

Low-light performance is solid though not flawless; the hardware and software assist capture good results even in challenging lighting, though like all phones it has limitations compared to the very highest tier. Video recording is strong: the device supports up to 8K video at 24fps, 4K at 30/60fps, and high frame-rate 1080p slow motion options. The video stabilisation and gimbal support elevate the phone for creators.

The camera app offers professional controls, AI enhancements, scene detection and manual modes for users who want to shoot beyond point-and-shoot. If photography or videography is a major part of your usage, the camera system here offers high flexibility without needing extra gear. One user comment notes: “Battery is indeed excellent and no complaints about any app or game lags,” reflecting the well-rounded package.

Of course, in extremely demanding or niche photography use-cases (e.g., large-format zoom, highest dynamic range astro-shots) there will still be specialist devices better tuned. But as an all-round camera smartphone the Zenfone 11 Ultra is very competitive and reliable.

 Battery & Charging

The Zenfone 11 Ultra is equipped with a 5500 mAh battery (some listings say “about” 5500) which is generous for a device of its size and performance. Combined with the efficient 4nm chipset, LTPO display (which can throttle refresh down to 1Hz) and software optimisations, this translates into very respectable battery life: many users report it easily covers a full day of heavy use and some even more.

Charging is also strong: wired fast charging is rated around 65W, enabling significantly rapid top-ups when needed; wireless charging support is present (around 15W in many markets) as well as reverse wired charging (around 10W) for powering accessories. This means the phone is practical for real-world use, not just during casual tasks but also when you need a quick boost.

Efficiency is boosted further by display techniques (LTPO) and power-saving software: when the screen is static or showing minimal motion the refresh rate drops, preserving battery. This helps the phone maintain longer endurance in mixed usage (productivity + streaming + breaks). Thermal and power management appear competent, keeping the device cooler and more comfortable during charging/usage.

One point to note: as with all high-performance phones, heavy sustained gaming or high-brightness HDR streaming will consume power faster, and you may benefit from plugging in during extended heavy sessions. But for typical daily usage (social media, browsing, video, light gaming) the battery and charging capabilities are excellent.

Overall, the Zenfone 11 Ultra offers a battery and charging experience that align with flagship expectations: large capacity, efficient hardware/software, fast charge support and enough practicality for real-world usage.

 Connectivity & Features

The Zenfone 11 Ultra supports modern connectivity features befitting a flagship: 5G networks, Wi-Fi standards up to Wi-Fi 7 (depending region), Bluetooth 5.4, NFC, dual-SIM (Nano + Nano or Nano + eSIM depending variant), USB-C (with high-speed data/OTG/DisplayPort support), and a wide array of positioning systems (GPS, GLONASS, Galileo, etc). This ensures the phone is well prepared for both current and upcoming network/connection standards.

Audio features are strong: stereo speakers, high resolution audio support, and good ancillary audio hardware make media consumption rich. The design includes an under-display fingerprint sensor for biometric unlocking, along with face-unlock options. IP68 dust/water resistance adds durability, meaning the phone is more rugged than many budget alternatives.

Additional features include sophisticated display tech (Always-On display, adaptive refresh), gaming or performance modes, professional camera modes, and software enhancements built into ZenUI. These extras add to the overall “premium” feel and differentiate the device from lower-tier phones.

One caveat: some user reports mention region-specific feature differences (for example wireless charging speed, update policy, accessory support), so buyers should check local variant details. There are also some software quirks reported in forums (e.g., headphone jack issues after an update) though these appear relatively isolated.

In sum, connectivity and extras in the Zenfone 11 Ultra are comprehensive and match the expectations for a flagship device. If you value full support for modern networks, high-quality audio, rugged build and rich ecosystem features, this phone ticks almost all boxes.

Value Proposition & Verdict

The ASUS Zenfone 11 Ultra offers a compelling mix of premium features—large high refresh display, top-tier chipset, strong camera system, generous battery + fast charging, modern connectivity—at a price that in many markets is somewhat below the absolute top-tier flagship brands. In Kenya, pricing around KSh 100,000 to KSh 145,000 has been reported for 12/256GB and 16/512GB variants. This places it firmly in the “premium flagship” category but with a competitive edge in some ways.

Its major strengths: high-refresh display (144Hz, LTPO), gimbal-stabilised 50MP main camera + telephoto + ultra-wide, large battery with efficient hardware, IP68 protection, and a strong performance platform. These features make it suitable for power users, media creators, gamers and anyone who wants a smartphone experience without major compromise.

Trade-offs to consider: the resolution is FullHD+ rather than higher-QHD (some flagships go 1440p+), update policy (number of major Android versions guaranteed) may be less generous than some competitors, and real-world availability and after-sales support may vary by region. Some user forums mention minor software issues or update delays—something to check locally.

If your priority is: excellent performance, strong camera flexibility, durability and future-proof connectivity, and you value a full-flagship experience at a relatively “better value” than the highest-priced brands, then the Zenfone 11 Ultra is a very strong proposition. However, if you prioritise ultra-high resolution display, longest software update guarantees, or a compact form-factor, you might want to explore alternatives.

In conclusion: the ASUS Zenfone 11 Ultra is a top-tier smartphone that delivers almost everything you’d expect from a flagship, with very few compromises. It offers real value in the premium space and is a smart choice for users who demand a rich, multi-faceted smartphone experience.