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Samsung Galaxy S21 Ultra 5G | 128GB Storage | 12GB RAM | 6.8-inch 120Hz QHD AMOLED | 108MP Quad Camera
Ten-times periscope reach for distant subjects, with a glass back and all-day stamina for executives on the go.
Condition: Used
Note: price and availability are subject to change without prior notice
Mascom International stocks the Samsung Galaxy S21 Ultra 5G at KSh 41,000, a used unit with 128GB storage, 12GB RAM and a 6.8-inch 120Hz QHD+ Dynamic AMOLED 2X display. The Samsung Galaxy S21 Ultra 5G carries four rear cameras: a 108MP main sensor, a 12MP ultrawide and two 10MP telephoto lenses with 3x and 10x optical zoom. A 5000mAh battery, IP68 protection, Wi-Fi 6E and S Pen support complete the package. This is a carefully maintained international import, available now at our shop on the first floor of Old Mutual Building, Kimathi Street, Nairobi CBD.
Built for executives, lawyers, field engineers and photography hobbyists across Kenya, the Samsung Galaxy S21 Ultra 5G handles long workdays, detailed photos and heavy multitasking. The usual problem with a top camera phone is price, since newer Ultra models cost far more. The Samsung Galaxy S21 Ultra 5G brings the same idea of serious zoom and a big sharp screen at a used price. A field engineer on a site in Industrial Area can zoom 10x onto a meter label from the ground. A lawyer in Upper Hill can review contracts on the QHD+ screen and jot notes with an S Pen.
Unlike other electronics retailers in Kenya that hand over used phones with no history or cover, Mascom International tests every Samsung Galaxy S21 Ultra 5G and writes a 6-month warranty on the receipt. Buyers throughout Kenya report that the 5000mAh battery carries them from morning meetings to evening events. At Mascom International, we're seeing photographers pick this model for wildlife trips to Nairobi National Park and Maasai Mara. Visit our Kimathi Street shop to test the zoom yourself, or order on WhatsApp and pay when the phone reaches you.
Common Questions About the Samsung Galaxy S21 Ultra 5G
How much does the Samsung Galaxy S21 Ultra 5G 128GB cost in Kenya?
The Samsung Galaxy S21 Ultra 5G 128GB with 12GB RAM costs KSh 41,000 used at Mascom International on Kimathi Street, Nairobi. You get a tested, factory-reset phone, a 6-month Mascom International warranty and pay-on-arrival delivery across all 47 counties. No charger comes with it, as Samsung dropped chargers from this generation, but compatible 25W adapters are available in store. It sits KSh 10,000 above the Samsung Galaxy S21 5G 256GB, which costs KSh 31,000 but lacks the periscope zoom and QHD+ screen.
Is this Samsung Galaxy S21 Ultra 5G used or refurbished, and what is the difference?
This Samsung Galaxy S21 Ultra 5G is a used phone, lightly used internationally and kept in clean condition, not a refurbished one. Refurbished means a manufacturer or certified centre repaired and recertified the device, often with new parts. Our used units keep their original parts and pass our checks of all four rear cameras, the screen, speakers, SIM signal and charging. Battery health and cosmetic wear vary from unit to unit, so ask on WhatsApp for photos and details before you order.
Should I buy the Samsung Galaxy S21 Ultra 5G or the Samsung Galaxy Note20 Ultra?
Choose the Samsung Galaxy S21 Ultra 5G for longer zoom and a bigger battery; choose the Samsung Galaxy Note20 Ultra for a built-in S Pen. Mascom International sells the Note20 Ultra 128GB used for KSh 43,000, KSh 2,000 more. That phone stores its stylus inside the body, while this one works with an S Pen sold separately. This phone has a 10x optical periscope lens and a 5000mAh battery, both stronger than the Note. Writers and note-takers suit the Note; photographers suit this phone.
How far can the Samsung Galaxy S21 Ultra 5G camera zoom?
The Samsung Galaxy S21 Ultra 5G zooms 10x optically through its periscope lens, with no loss of detail from cropping. A second telephoto handles 3x optical zoom for portraits and closer subjects, and both lenses have optical stabilisation. Beyond 10x, Samsung's digital Space Zoom stretches further, though detail drops. Wildlife fans in Maasai Mara, sports parents at school fields and engineers inspecting rooftops get usable shots from far away. Laser autofocus helps the camera lock focus quickly in dim rooms.
Will the Samsung Galaxy S21 Ultra 5G work well on Safaricom, Airtel Kenya and Telkom?
Yes, the Samsung Galaxy S21 Ultra 5G works on 4G with Safaricom, Airtel Kenya and Telkom, listing 4G bands 1, 3, 7, 28 and 40. International units also list 5G band 78, while US units list 5G bands 41, 66 and 71 plus mmWave. It supports a nano-SIM plus eSIM, so a work line and a personal line can run together. Safaricom 5G reach differs by town and estate, so bring your SIM to our shop and test before paying.
Does the Samsung Galaxy S21 Ultra 5G support the S Pen?
Yes, the Samsung Galaxy S21 Ultra 5G was the first Galaxy S phone to work with an S Pen, which is sold separately. There is no slot inside the phone, so most users carry the pen in a case with a holder. With the pen, you can sign PDFs, mark up site drawings and write handwritten notes that convert to text. Doctors, architects and university lecturers at UoN or JKUAT often find this useful for quick annotations between appointments or classes.
Who should buy the Samsung Galaxy S21 Ultra 5G, and who should skip it?
Buy the Samsung Galaxy S21 Ultra 5G if you want long-range zoom, a QHD+ screen and 12GB RAM for around KSh 41,000. Executives, photographers and heavy multitaskers get the most from it. Skip it if you need more storage, as 128GB has no card slot; the Samsung Galaxy S22 Ultra 256GB at KSh 57,000 suits heavy video users. Skip it too if 227 grams feels heavy in your pocket; the lighter Samsung Galaxy S21 5G at KSh 31,000 is easier to carry.
Is the Samsung Galaxy S21 Ultra 5G better value than the Samsung Galaxy S22 Ultra?
The Samsung Galaxy S21 Ultra 5G 128GB saves you KSh 11,000 against the used Samsung Galaxy S22 Ultra 128GB, which Mascom International sells for KSh 52,000. Both offer a 10x periscope zoom and a large QHD+ screen. The newer model adds a built-in S Pen slot, a newer processor and a longer software support window. If you want zoom and screen quality for less money, this phone is the better buy; if you plan to keep your phone four or more years, spend more.
Technical Specifications
Display
- 6.8-inch Dynamic AMOLED 2X screen — a large canvas for spreadsheets, maps, films and photo editing on the move.
- 1440 x 3200 QHD+ resolution at about 515 pixels per inch — fine detail, so small text in contracts stays clear.
- 120Hz refresh rate — the screen updates 120 times each second, making scrolling and gaming look smooth.
- Up to 1500 nits peak brightness rated by Samsung — the screen stays readable outdoors in bright afternoon sun.
- HDR10+ with Gorilla Glass Victus on front and back — richer video highlights and tough glass that resists scratches.
Processor
- 5-nanometre eight-core chip — Snapdragon 888 in US-market units and Exynos 2100 in international units.
- The chip in your unit depends on where it was first sold, so confirm the version with us on WhatsApp.
- Top core speed of up to 2.9GHz on Exynos or 2.84GHz on Snapdragon — big apps and games open fast.
- Mali-G78 MP14 or Adreno 660 graphics — the part that draws game scenes, video edits and animations.
- Launched with Android 11 and received four major upgrades — Samsung DeX turns it into a desktop on a monitor.
Memory and Storage
- 12GB RAM — keeps many apps open in the background, from Teams and Outlook to games, without reloading.
- 128GB internal storage on UFS 3.1 — fast storage that saves large photos and videos without delay.
- Room for roughly 40,000 photos at 12MP, after the system and apps take their share.
- Or about 16 hours of 1080p video, or roughly 6 hours of 4K footage at 30 frames per second.
- No microSD slot — use Google Drive, Samsung Cloud or a USB-C flash drive to free up space.
Camera Hardware and Imaging
- 108MP main camera, f/1.8, with optical stabilisation and laser autofocus — detailed shots you can crop or print large.
- 10MP periscope telephoto with 10x optical zoom and stabilisation — sharp photos of wildlife, stages and distant signs.
- 10MP telephoto with 3x optical zoom — flattering portraits and mid-range shots without walking closer.
- 12MP ultrawide with a 13mm lens — fits whole rooms, buildings and big groups into one frame.
- 8K at 24fps and 4K at 60fps video, plus a 40MP selfie camera recording 4K — strong footage from both sides.
Battery and Charging
- 5000mAh battery — a full working day of calls, email, maps and camera use on one charge for most users.
- 25W wired fast charging over USB Power Delivery — pair it with a compatible Samsung adapter for quickest refills.
- 15W Qi wireless charging — drop it on a charging pad at your desk or bedside.
- 4.5W reverse wireless charging — top up Galaxy Buds or a Galaxy Watch by resting them on its back.
- USB Type-C 3.2 port — quick file transfers, wired DeX and OTG for flash drives and card readers.
Connectivity and Network Support
- 5G with 4G LTE — 4G bands 1, 3, 7, 28 and 40 on both versions; international units list 5G band 78.
- Nano-SIM plus eSIM — run two lines at once, such as Safaricom for M-Pesa and Airtel Kenya for data.
- Wi-Fi 6E and Bluetooth 5.2 — fast connection on newer routers and steady links to wireless earbuds.
- NFC and Ultra Wideband — tap-to-pay where your bank supports it and precise tracking with compatible Galaxy SmartTags.
- IP68 rating, stereo speakers and no headphone jack — resists dust and water to 1.5 metres for 30 minutes.
Package Contents
Your Samsung Galaxy S21 Ultra 5G leaves Mascom International tested, factory reset and ready for a SIM or eSIM. As a used import, the retail box and extras differ between units, so confirm what ships with yours over WhatsApp. Samsung did not include a charger or S Pen with this model. Compatible 25W USB-C chargers, S Pen-friendly cases and tempered glass protectors are sold separately in our shop, and we can apply the protector while you wait.
Warranty
This Samsung Galaxy S21 Ultra 5G is a carefully maintained international import, never deployed locally in Kenya, and comes with a Mascom International 6-month warranty covering hardware functionality. Screen, motherboard, camera, speaker or charging faults under normal use are assessed at our Nairobi CBD service desk in Old Mutual Building.
Where to Buy the Samsung Galaxy S21 Ultra 5G in Kenya
The Samsung Galaxy S21 Ultra 5G 128GB is waiting at Mascom International, Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. We serve walk-in buyers Monday through Saturday, 9:00 AM to 7:00 PM, and you can try the 10x zoom on the counter before paying. Samsung sold it in Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy and Phantom Brown; ask which colour is on our shelf.
Our team responds quickly on these channels:
- Phone/WhatsApp: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Every order ships pay-on-arrival to all 47 counties. Nairobi and its environs receive same-day delivery, and customers in Mombasa, Malindi, Nanyuki, Kericho and other major towns get theirs the next business day. Mandera, Wajir, Marsabit, Lamu, Tana River, and Turkana receive delivery within 2-3 business days. The phone carries the 6-month warranty set out above. We stand behind honest unit descriptions, clear pricing and real after-sales support from a walk-in shop you can always visit.
Disclaimer: We can not guarantee that the information on this product is 100% correct
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