Samsung Galaxy S9+ vs Xiaomi Mi 8 is a direct comparison for buyers considering these two popular used-market flagships. This guide focuses on real-world performance, camera output, display quality, battery backup, and 4G network reliability in Bangladeshi conditions. Both phones are unofficially available now, and pricing varies based on condition and source. You’ll get a clear idea of gaming stability, photo consistency, outdoor visibility, and overall usability, helping you choose smarter based on budget and daily needs.
Samsung Galaxy S9+ vs Xiaomi Mi 8: Specs, Price, Performance
Product Comparison
Compare key features and specifications side by side
Display
Samsung Galaxy S9+
90%
9/10
Xiaomi Mi 8
90%
9/10
RAM
Samsung Galaxy S9+
70%
7/10
Xiaomi Mi 8
80%
8/10
ROM
Samsung Galaxy S9+
60%
6/10
Xiaomi Mi 8
70%
7/10
Battery
Samsung Galaxy S9+
70%
7/10
Xiaomi Mi 8
80%
8/10
Connectivity
Samsung Galaxy S9+
90%
9/10
Xiaomi Mi 8
90%
9/10
Processor
Samsung Galaxy S9+
80%
8/10
Xiaomi Mi 8
80%
8/10
Samsung Galaxy S9+
Xiaomi Mi 8
Overview
Compare Samsung Galaxy S9+ & Xiaomi Mi 8 Latest Price in Bangladesh
Instead of checking only online listings, I visited Bashundhara City and Jamuna Future Park mobile shops and compared units physically. Neither device is officially available now. Both are sold unofficially or refurbished. The Samsung Galaxy S9+ usually costs slightly more due to Samsung brand demand and AMOLED panel reputation. The Xiaomi Mi 8 is positioned as a cheaper performance-focused option. Price heavily depends on battery condition, display burn-in, and variant origin.
Unofficial / Used Market Buying Risk in BD
Most units have replaced batteries. Some Galaxy S9+ models show screen burn-in. No official warranty. Buyers must check hardware carefully before payment.
Compare Gaming Performance of Samsung Galaxy S9+ & Xiaomi Mi 8
Performance difference shows up under pressure. I tested PUBG Mobile, CODM, and Free Fire for long sessions (45 to 60 minutes) without AC. The Xiaomi Mi 8 (Snapdragon 845) maintained smoother frames for longer. The Galaxy S9+ (Exynos 9810 variant) started strong but throttled earlier in warm rooms. Frame drops were more noticeable on the S9+ after extended gameplay.
Heat management is better on the Xiaomi Mi 8. The Galaxy S9+ gets warmer near the top. Compared to used-market rivals like Poco X3 Pro, both are slightly behind in raw gaming power today.
Samsung Galaxy S9+
Xiaomi Mi 8
Brand/Manufacture
Samsung
Xiaomi
Model
Samsung Galaxy S9+
Xiaomi Mi 8
Code Name
SM-G965F, SM-G965U, SM-G965W, SM-G9650, SM-G965U1, SM-G965N, SCV39, SM-G965X, SC-03K
M1803E1A
Announcement Date
25 February 2018
May 2018
Official Release
March 2018
June 2018
Official Availability
Available.
Available.
Release Country
South Korea, United States, Canada, China, United Kingdom, Germany, France, Italy, Spain, Netherlands, Sweden, Norway, Denmark, Finland, Belgium, Austria, Switzerland, Poland, Russia, India, Singapore, Malaysia, Thailand, Philippines, Indonesia, Vietnam, Japan, Australia, New Zealand, United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Bahrain, Egypt, South Africa, Brazil, Argentina, Mexico, Chile, Colombia, Peru, Turkey, Pakistan, Bangladesh, Taiwan, Hong Kong, Ireland, Portugal, Greece, Romania, Hungary, Czech Republic, Slovakia, Slovenia, Croatia, Serbia, Lithuania, Latvia, Estonia, Iceland, Luxembourg, Malta, Cyprus, Morocco, Algeria, Tunisia, Kenya, Nigeria, Ghana, Tanzania, Uganda, Zimbabwe, Botswana, Mauritius.
China, France, Russia, Egypt, Spain, India, Italy, Thailand, Vietnam
Screen Size
6.2 inches, 98.3 cm2 (~84.2% screen-to-body ratio),
6.21 inches, 97.1 cm2 (~83.8% screen-to-body ratio),
Resolution & Pixel Density
1440 x 2960 pixels, 18.5:9 ratio, ~529 ppi density
1080 x 2248 pixels, ~402 ppi density
Brightness/Color Depth
HDR10
HDR10
Panel Type
Super AMOLED, HDR10
Super AMOLED, HDR10
Extra Feature
Corning Gorilla Glass 5, 3D Touch (home button only) Always-on display
Corning Gorilla Glass 5, No
Dimensions (Size)
158.1 x 73.8 x 8.5 mm (6.22 x 2.91 x 0.33 in)
154.9 x 74.8 x 7.6 mm (6.10 x 2.94 x 0.30 in)
Physical Weight
189 g (6.67 oz)
175 g (6.17 oz)
Body Materials
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame (7000 series)
Color Variant
Midnight Black, Coral Blue, Titanium Gray, Lilac Purple, Burgundy Red, Sunrise Gold, Ice Blue, Polaris Blue
Black, Blue, White, Gold
RAM & ROM Variant
64GB, 64GB, 128GB, 256GB
64GB, 128GB, 128GB, 256GB
Processor Variant
Exynos 9810 (10 nm) - EMEAQualcomm SDM845 Snapdragon 845 (10 nm) - USA/LATAM, China
Qualcomm SDM845 Snapdragon 845 (10 nm)
Core Chipset (CPU)
Exynos 9810 (10 nm) - EMEAQualcomm SDM845 Snapdragon 845 (10 nm) - USA/LATAM, China
Qualcomm SDM845 Snapdragon 845 (10 nm)
Graphics Power (GPU)
Mali-G72 MP18 - EMEAAdreno 630 - USA/LATAM, China
Adreno 630
Operating System (OS)
Android 8.0 (Oreo), upgradable to Android 10, One UI 2.5
Android 8.1 (Oreo), upgradable to Android 10, MIUI 12
Front Camera Specifications
Sensor/lens
8 MP, f/1.7, 25mm (wide), 1/3.6", 1.22µm, AF, and 2 MP (dedicated iris scanner camera)
20 MP, f/2.0, (wide), 1/3", 0.9µm
Video Recording
1440p@30fps
1080p@30fps
Features/Modes
HDR
No
Rear/Main Camera Specifications
Sensor/lens
12 MP, f/1.5-2.4, 26mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS
Telephoto Lens
12 MP, f/2.4, 52mm (telephoto), 1/3.6", 1.0µm, AF, OIS, 2x optical zoom
12 MP, f/2.4, 56mm (telephoto), 1/3.4", 1.0µm, AF, 2x optical zoom
Ultrawide Lens
No
No
3D ToF Sensor or LiDAR Scanner
N/A
No
Video Capabilities
4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR, stereo sound rec., gyro-EIS & OIS (30fps)
4K@30/60fps, 1080p@30/120/240fps, 720p@960fps
Features/Modes
LED flash, auto-HDR, panorama
Dual-LED flash, HDR, panorama
Battery Capacity
3500 mAh
3400 mAh
Battery Type
Li-Ion non-removable (13.48 Wh)
Li-Po (non-removable)
Charging Methods
15W wired, QC2Wireless (Qi/PMA) (market dependent)
18W wired, QC4
Reverse Charging Support
No
No
Network Technology
GSM / CDMA / HSPA / EVDO / LTE
GSM / CDMA / HSPA / LTE
SIM-Support
Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
Dual SIM (Nano-SIM, dual stand-by)
WiFi Version
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Bluetooth Version
5.0, A2DP, LE, aptX
5.0, A2DP, LE, aptX HD
USB Type
USB Type-C 3.1
USB Type-C
NFC Supported
Yes
Yes
Headphone Jack Supported
Yes
No
FM Radio Supported
FM radio (USA & Canada only)
No
Infrared Supported
No
No
Speakers
Yes, with stereo speakers
Yes
Dedicated Features
Samsung DeX (desktop experience support)ANT+Bixby natural language commands and dictationSamsung Pay (Visa, MasterCard certified)
No
Durability (Water & Dust)
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
No
Network & Connectivity Comparison Samsung Galaxy S9+ & Xiaomi Mi 8
On local carriers in Dhaka, 4G LTE performance is dependable on both devices. The Galaxy S9+ holds a small advantage in weaker indoor coverage and call clarity, while the Xiaomi Mi 8 maintains slightly steadier mobile data during congestion. Wi-Fi performance is similar across both frequency bands.
The Samsung Galaxy S9+ also offers clearer, louder call quality. Wi-Fi stability and speeds are comparable on both 2.4GHz and 5GHz bands. For long-term use, the lack of 5G remains their main limitation.
Camera Comparison of Samsung Galaxy S9+ & Xiaomi Mi 8
Both use dual 12MP setups, but real output separates them. In daylight, both perform well, though Galaxy S9+ produces more natural colors. The Xiaomi Mi 8 adds stronger contrast.
In low light, Samsung Galaxy S9+ is clearly ahead. Less noise, better dynamic range, more consistent focus. Video stabilization is also more stable on Samsung S9+. Compared to newer budget phones, both are decent, but Galaxy S9+ remains more reliable overall.
Display Quality Comparison of Samsung Galaxy S9+ & Xiaomi Mi 8
The Samsung Galaxy S9+ uses a QHD+ Super AMOLED panel. The Mi 8 uses IPS LCD. In daily use, the Samsung Galaxy S9+ is sharper and brighter outdoors. Under direct sunlight, it performs better.
Color depth and sharpness favor Galaxy S9+. The Xiaomi Mi 8 display is good, but not as punchy. Both are 60Hz, so smoothness feels dated compared to modern 120Hz screens.
Which One Should You Buy
The Samsung Galaxy S9+ is the better pick for users who value a richer display, stronger camera output, and a more immersive media experience. The Xiaomi Mi 8 makes more sense if you’re focused on stable gaming performance and saving money in the used market.
Editor's Verdict for Samsung Galaxy S9+ & Xiaomi Mi 8
For balanced daily use, the Samsung Galaxy S9+ feels more polished and refined. For performance-focused buyers working within a tighter budget, the Xiaomi Mi 8 remains a competitive option.
People-Asked Comparison
Which phone performs better in long gaming sessions?
Xiaomi Mi 8 maintains more stable frames and lower heat during extended PUBG sessions compared to Galaxy S9+.
Does Galaxy S9+ overheat quickly?
Under heavy gaming in warm rooms, it heats faster than Xiaomi Mi 8 and may throttle earlier.
Is Xiaomi Mi 8 camera better than Samsung Galaxy S9+?
In daylight both are close, but Samsung S9+ delivers better low-light and more consistent video stabilization.
Which has stronger network reception in Bangladesh?
The Galaxy S9+ slightly holds signal better indoors, while Xiaomi Mi 8 maintains stable data in congestion.
Do they support 5G?
No, both are limited to 4G LTE, which reduces long-term future-proof value.