Head to head

Samsung Galaxy S21 5G vs Xiaomi Redmi K100 Pro Max

Full specification and price comparison for Pakistan, updated 18 Aug 2026.

The short answer

The Xiaomi Redmi K100 Pro Max is the stronger phone of the two, scoring 89 against 75 on our combined specification score. It leads on camera, battery & charging and memory & storage. The Samsung Galaxy S21 5G still wins on performance, so it remains the better choice if that is your priority. The Samsung Galaxy S21 5G is the cheaper of the two at PKR 169,999 against PKR 189,999.

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The verdict

Spec-derived

Xiaomi Redmi K100 Pro Max takes it by 14 points on our weighted spec score.

Performance Samsung Galaxy S21 5G leads

Gaming score where available, otherwise chipset tier plus usable RAM.

Camera Xiaomi Redmi K100 Pro Max leads

Camera Score where available, otherwise sensor resolution and lens count. Megapixels alone do not measure image quality.

Battery & charging Xiaomi Redmi K100 Pro Max leads

Cell capacity in mAh weighted with rated wired charging output.

Display Level

Pixel density, refresh rate and panel technology.

Memory & storage Xiaomi Redmi K100 Pro Max leads

Highest advertised RAM and internal storage configuration.

Value for money Xiaomi Redmi K100 Pro Max leads

Combined spec score divided by current Pakistani retail price.

What actually differs

  • Samsung Galaxy S21 5G costs PKR 20,000 less.
  • Xiaomi Redmi K100 Pro Max packs a 5,070 mAh larger battery.
  • Xiaomi Redmi K100 Pro Max charges 75W faster.
  • Xiaomi Redmi K100 Pro Max offers 8 GB more RAM.
  • Xiaomi Redmi K100 Pro Max ships with 768 GB more storage.
  • Xiaomi Redmi K100 Pro Max has a 136 MP higher-resolution main sensor.

Buy the Samsung Galaxy S21 5G if…

you care most about performance.

Buy the Xiaomi Redmi K100 Pro Max if…

you care most about camera, battery & charging, memory & storage and value for money.

Full specification comparison

Specification Samsung Galaxy S21 5G Xiaomi Redmi K100 Pro Max
Price in Pakistan
Retail price PKR 169,999 Cheaper PKR 189,999
Design & build
Release date January 14, 2021 August 12, 2026
Dimensions 151.7 x 71.2 x 7.9 mm 162.8 x 77.2 x 8.45 mm
Weight 169 g Better 238 g
Water resistance IP68 dust and water resistant (up to 1.5 m for 30 minutes) IP66 / IP68 / IP69
Display
Screen size 6.2 inches 6.9 inches Better
Resolution 2400 x 1080 pixels 1200 × 2608 pixels Better
Panel type Dynamic AMOLED 2X Adaptive 120Hz HDR10+ AMOLED, LTPO 185Hz 68 billion colors HDR10+, Dolby Vision, HDR Vivid
Protection Corning Gorilla Glass Victus Xiaomi Dragon Crystal Glass
Performance
Chipset Samsung Exynos 2100 (5 nm) / Qualcomm Snapdragon 888 (5 nm), depending on market Qualcomm Snapdragon 8 Elite Gen 5 (3nm)
CPU Octa-core Up to 2.9 GHz on Exynos version Octa-Core
GPU Mali-G78 MP14 / Adreno 660, depending on chipset Adreno 840
Operating system Android 11, One UI 3.1 Android 16, HyperOS 3
Memory & storage
RAM 8GB 12GB / 16GB LPDDR5X Ultra Better
Internal storage 128GB / 256GB LPDDR5 256GB / 512GB / 1TB UFS 4.1 Better
Card slot No No
Camera
Main camera 12MP + 64MP + 12MP, OIS, PDAF, 3x Hybrid Optical Zoom, up to 30x Space Zoom Triple 200MP + 50MP Periscope Telephoto + 50MP Ultrawide OIS, PDAF, HDR, Panorama, LED Flash Better
Selfie camera 10MP, f/2.2, Dual Pixel PDAF LED flash, HDR, panorama 32MP Better
Video recording Up to 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps
Battery & charging
Battery capacity Li-Ion (non-removable) 4000 mAh 9070 mAh Silicon-Carbon Non-Removable Battery Better
Wired charging 25W wired, 15W wireless, 4.5W reverse wireless charging 100W Wired Fast Charging, 50W Wireless Charging, 27W Reverse Wired Charging Better
Connectivity & extras
SIM Nano-SIM + eSIM Dual Nano-SIM
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac/ax, dual-band, Wi-Fi 6 Wi-Fi 7, Dual-Band, Wi-Fi Direct
Bluetooth 5.0 5.4, A2DP, LE, LHDC 5.0
NFC Yes Yes
Sensors Accelerometer, Gyro, Proximity, Compass, Barometer, Hall Sensor, Ambient Light Sensor, Ultrasonic Fingerprint Sensor Fingerprint Sensor: Under-Display Ultrasonic Accelerometer, Proximity, Gyroscope, Compass, Ultrasonic Fingerprint
USB USB Type-C 3.2 Gen 1 USB Type-C 3.2 OTG supported

“Better” marks the higher (or, for price and weight, the lower) figure. It is a specification difference, not a judgement about real-world experience.

Questions people ask

Which is better, Samsung Galaxy S21 5G or Xiaomi Redmi K100 Pro Max?

Xiaomi Redmi K100 Pro Max comes out ahead on our combined spec score, leading by 14 points. It wins on camera, battery & charging, memory & storage and value for money. Samsung Galaxy S21 5G can still be the better buy if your priorities sit elsewhere or if you find it at a lower street price.

What is the price of Samsung Galaxy S21 5G and Xiaomi Redmi K100 Pro Max in Pakistan?

Samsung Galaxy S21 5G is listed at PKR 169,999 and Xiaomi Redmi K100 Pro Max at PKR 189,999. That makes Samsung Galaxy S21 5G cheaper by PKR 20,000. Retail prices move often, so treat these as indicative.

Which has the better camera, Samsung Galaxy S21 5G or Xiaomi Redmi K100 Pro Max?

Xiaomi Redmi K100 Pro Max scores higher in our camera assessment. Samsung Galaxy S21 5G uses a 64 MP main sensor against 200 MP on Xiaomi Redmi K100 Pro Max, though sensor size and processing matter more than resolution alone.

Which phone has the better battery, Samsung Galaxy S21 5G or Xiaomi Redmi K100 Pro Max?

Xiaomi Redmi K100 Pro Max leads on battery. Samsung Galaxy S21 5G carries a 4000 mAh cell and Xiaomi Redmi K100 Pro Max a 9070 mAh cell, with 25W and 100W wired charging respectively.

Which is better for gaming, Samsung Galaxy S21 5G or Xiaomi Redmi K100 Pro Max?

Samsung Galaxy S21 5G is the stronger gaming phone here. Samsung Galaxy S21 5G runs the Samsung Exynos 2100 (5 nm) / Qualcomm Snapdragon 888 (5 nm), depending on market while Xiaomi Redmi K100 Pro Max runs the Qualcomm Snapdragon 8 Elite Gen 5 (3nm).

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Tools that use this data

Camera Score Tool Battery Score Tool Gaming Performance Checker AI Mobile Recommendation Tool All comparisons

Scores are calculated from the published hardware specification of each device using the same formula for every phone on WhatMobilePK — they are not paid placements and they are not laboratory test results. Prices are indicative Pakistani retail prices and change frequently.