Sm G991U Smartphone Full Specs and Features

The Samsung SM-G991U is a powerful smartphone that packs a punch. It comes with a large 6.4-inch Dynamic AMOLED display.

This display is perfect for watching videos, browsing the web, or playing games on the go. The SM-G991U also features a long-lasting 4500mAh battery that can easily last a full day.

With a massive 128GB of internal storage, you'll have plenty of room for all your apps, photos, and files. The phone also supports up to 1TB of external storage via a microSD card.

The SM-G991U is equipped with a quad-camera setup, consisting of a 50MP primary sensor, a 12MP front camera, and two 5MP cameras for depth sensing and macro shots.

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The Samsung Galaxy S series has always been known for its sleek and compact design, and the SM-G991U is no exception. It measures 71.2 x 151.7 x 7.9mm in dimensions.

The device weighs a manageable 171g, making it easy to carry around in your pocket or bag.

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The SM-G991U supports both single and dual SIM cards, giving you the flexibility to choose your preferred setup. The SIM card size is Nano-SIM (4FF), which is the standard size for most modern smartphones.

The device is also IP68 rated, meaning it's dust and water resistant up to 1.5m for 30 minutes. This provides peace of mind when using your phone in harsh environments or during accidental drops in water.

The physical specs of the Samsung Galaxy S21 5G Xfinity SM-G991U are quite impressive. Its dimensions are 71.2 x 151.7 x 7.9mm, making it a sleek and compact device.

This phone is designed to withstand the elements, with an IP68 rating that means it's dust and water resistant up to 1.5 meters for 30 minutes. That's a great feature for those who like to use their phone in the shower or by the pool.

One of the most notable physical specs of this phone is its weight, which is a mere 171g. This makes it easy to carry around in your pocket or purse.

Here are the physical specs of the Samsung Galaxy S21 5G Xfinity SM-G991U at a glance:

The battery is a crucial aspect of any device, and our device is no exception. It has a standard battery capacity of 4000mAh, which is a decent size for a device of this type.

The battery is non-removable, which means you'll need to be mindful of your power usage to avoid running out of juice. Fast charging support is available, which can be a lifesaver when you're in a hurry.

You can expect up to 30 hours of talk time on a single charge, which is impressive. Standby time is also quite good, with up to 11.3 days of standby time.

Here are some key battery specs:

Wireless charging is also supported, with a fast charging speed of up to 15W. This is a convenient feature that allows you to charge your device without having to plug it in.

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The display and camera features of the SM-G991U are impressive. This phone boasts a 6.2-inch Dynamic AMOLED 2X display with a resolution of 1080 x 2400 pixels and a pixel density of 421 PPI.

The display is also HDR10+ certified and features an adaptive 120Hz refresh rate, which provides a smooth and responsive viewing experience. Additionally, it has a peak brightness of 1300 nits.

The camera setup is equally impressive, with a triple-camera setup on the rear and a single camera on the front. The rear camera features a 64MP telephoto lens, a 12MP wide-angle lens, and a 12MP ultra-wide lens, along with a 10MP front camera.

Here are the key camera features:

The rear camera also features an optical image stabilizer (OIS) and can record 8K video at 24fps, 4K video at 30/60fps, and 1080p video at 30/60/240fps.

The screen on this device is truly impressive. It features a Dynamic AMOLED 2X technology, which provides an excellent viewing experience.

The screen size is 6.2 inches, making it perfect for watching videos, browsing the web, or gaming on the go. You'll also appreciate the 16M color depth, which ensures vibrant and lifelike colors.

The resolution is Flat FHD+ 2400 x 1080 Pixels, which translates to 421ppi pixel density. This means you'll get crisp and clear text, making it ideal for reading and browsing.

Here are the key display features:

The screen area is 94.1 cm, and the aspect ratio is 20:9, which is quite common for modern smartphones. If you're concerned about screen protection, you'll be happy to know that it's made with Corning Gorilla Glass Victus, which is one of the toughest glass materials available.

The main camera on this device is a triple-camera setup, which means you get three lenses to capture different types of shots.

One of the lenses is a 64MP telephoto lens with a focal length of 29mm, allowing for 1.1x optical zoom and 3x hybrid zoom. It's also got optical image stabilization (OIS) to help reduce camera shake and blur.

Another lens is a 12MP wide-angle lens with a focal length of 26mm, featuring a large 1/1.76" sensor and 1.8µm pixels for improved low-light performance. It also has OIS and Dual Pixel PDAF for fast and accurate autofocus.

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The third lens is a 12MP ultra-wide lens with a 120° field of view, perfect for capturing more of your surroundings in a single shot. It's also got Super Steady video stabilization to help smooth out footage.

The main camera also features a LED flash, auto-HDR, and panorama mode, making it great for capturing a wide range of shots. You can even record 8K video at 24fps or 4K video at 30/60fps for stunning detail and smooth motion.

Here are the key specs of the main camera:

The SM-G991U specs show that this device has a decent amount of memory. RAM Size is 8GB, which should be enough for most users.

For storage, you can choose between 128GB and 256GB of internal ROM. Unfortunately, there's no external memory support, so you're stuck with the internal storage.

In terms of performance, the SM-G991U holds its own. Geekbench 5 Single Core scores a respectable 945, ranking 258 out of 1884.

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The processor is the brain of your device, and it's where the magic happens. The Samsung Galaxy S21 5G is powered by the Qualcomm SM8350 Snapdragon 888 processor.

This processor is an octa-core powerhouse, with 8 cores working together to deliver fast performance. You'll find 1x2.84 GHz Kryo 680, 3x2.42 GHz Kryo 680, and 4x1.80 GHz Kryo 680 cores, all working together to keep your device running smoothly.

The processor is also paired with an Adreno 660 GPU, which handles graphics and gaming performance. This combination of CPU and GPU makes the Samsung Galaxy S21 5G a great choice for gaming and heavy use.

Here are the key specs of the processor:

The memory of a device is crucial for its overall performance. It's where your applications, files, and data are stored.

RAM Size is 8GB, which is a decent amount for general use. However, it may not be enough for heavy multitasking or resource-intensive activities.

You can choose from 128GB or 256GB of internal storage, which is where your device's operating system, apps, and data are stored. This is a significant amount of storage, but it ultimately depends on your needs.

External memory support is not available, so you'll need to rely on your internal storage.

The SM-G991U is equipped with a range of connectivity options, making it easy to stay connected on the go. This device supports Wi-Fi 802.11 a/b/g/n/ac/ax 2.4 G + 5 GHz, HE80, MIMO, 1024-QAM, allowing for fast and reliable internet access.

For those who prefer a more traditional connection, the SM-G991U also features Bluetooth v5.0, enabling wireless communication with other devices. Additionally, the device supports NFC, making it easy to share files or make payments with a simple tap.

Here's a breakdown of the SM-G991U's connectivity features:

The SM-G991U also supports ANT+, allowing for connectivity with other devices in various industries, such as fitness and healthcare.

The operating system plays a crucial role in determining how well your device functions.

The platform for this device is Android.

Having Android 11 as the installed OS version provides a smooth and efficient user experience. One UI 3.1 is the specific version of Android 11 installed on this device, offering a range of features and improvements.

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The cellular connectivity on this device is quite impressive. It supports a wide range of bands, including GSM, CDMA, HSPA, EVDO, LTE, and 5G.

The device can connect to GSM networks on the 850, 900, 1800, and 1900 frequency bands, which is great for international travel. It also supports CDMA 800 and 1900, as well as TD-SCDMA.

In terms of 3G connectivity, the device supports HSDPA on the 850, 900, 1700(AWS), 1900, and 2100 frequency bands, which is ideal for streaming and online gaming. CDMA2000 1xEV-DO is also supported.

For 4G connectivity, the device supports LTE on multiple frequency bands, including 2, 4, 5, 12, 14, 28, 29, 30, 46, and 66. When roaming, it can connect to additional bands such as 1, 3, 7, 8, 13, 18, 19, 20, 25, 26, 28, 38, 39, 40, and 41.

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Here's a breakdown of the cellular connectivity options:

The device also supports dual SIM capabilities, with both SIM 1 and SIM 2 supporting GSM and CDMA connectivity.

Our device's connectivity features are top-notch, with support for Bluetooth v5.0, allowing for seamless connections to other devices. This means you can easily pair your device with headphones, speakers, or other Bluetooth-enabled accessories.

Wi-Fi connectivity is also excellent, with support for dual-band Wi-Fi 802.11 a/b/g/n/ac/ax 2.4 G + 5 GHz, HE80, MIMO, 1024-QAM. This ensures a fast and stable internet connection, perfect for streaming, browsing, or online gaming.

You'll also find NFC (Near Field Communication) capabilities, which enable easy file transfers and pairing with other devices. This is especially useful for transferring files between devices or making mobile payments.

ANT+ support is also included, which is useful for fitness enthusiasts who use ANT+ compatible devices, such as heart rate monitors or fitness trackers.

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Here's a summary of our device's connectivity features:

Our device also supports Wi-Fi Direct, which allows you to connect to other devices without the need for a Wi-Fi router. This is super useful for transferring files or streaming content between devices.

The SM G991U's audio and video capabilities are quite impressive. It can play a wide range of audio formats, including MP3, M4A, 3GA, AAC, and many others.

You'll be able to enjoy your favorite music and videos in various formats such as MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA, APE, DSF, and DFF.

The SM G991U can also play video in high definition, with supported formats including MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, and WEBM.

If you want to record video, the SM G991U can capture UHD 8K resolution at 24 frames per second, which is perfect for capturing life's precious moments.

For playing videos, the SM G991U can handle UHD 8K resolution at 60 frames per second, providing a smooth and seamless viewing experience.

Here's a list of the supported audio and video formats:

The Samsung Galaxy S21 5G SM-G991U is a powerful Android Smartphone with impressive specs. It measures 71.2 x 151.7 x 7.9mm in dimensions and weighs 171g.

Here are some key specs to consider:

The Galaxy S21 5G SM-G991U has a 6.2 inches screen size with Flat FHD+ 2400 x 1080 Pixels of screen resolution, making it perfect for watching videos or browsing the web. It comes with 8GB of RAM and 128GB / 256GB of Internal Storage.

Verizon has a reputation for having reliable coverage, with 99% of the US population having access to 4G LTE.

Their network is also known for having fast data speeds, with average download speeds of 20.77 Mbps.

Verizon's customer service is often praised for being helpful and responsive, with many customers reporting quick resolution to issues.

Some customers have reported issues with bill shock due to unclear data usage policies.

Overall, Verizon is a solid choice for those looking for reliable and fast coverage, but it's essential to carefully review their plans to avoid unexpected charges.

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Xfinity has a reputation for being one of the most reliable internet service providers in the country, with a strong network that covers over 40 million homes.

Their internet plans offer speeds ranging from 15 Mbps to 1,200 Mbps, making them a great option for both light and heavy internet users.

Xfinity's TV service is known for its vast channel lineup, with over 260 channels available in some areas.

Their Xfinity X1 platform allows for seamless streaming and DVR capabilities, making it easy to catch up on your favorite shows.

Xfinity's customer service is available 24/7, and they have a dedicated support team that can help with any issues or questions you may have.

Their prices are generally competitive, with most plans starting at under $30 per month for internet alone.

The SM-G991U specs deliver impressive performance.

In terms of processing power, the device is equipped with a large 2.4GHz octa-core CPU, which provides a significant boost to overall system performance.

This results in seamless multitasking and faster app loading times.

The SM-G991U also features a large 6GB RAM, which enables smooth performance even with multiple apps running simultaneously.

In terms of graphics performance, the device is backed by a Mali-G52 MP2 GPU, which provides a significant improvement in graphics rendering.

This results in smoother and more detailed graphics in games and other graphics-intensive applications.