Samsung
Samsung Galaxy S21 5G G9910 128GB 8GB RAM GSM Unlocked - Phantom Gray
Samsung Galaxy S21 5G G9910 128GB 8GB RAM GSM Unlocked - Phantom Gray
SKU: SKU:SAM-G9910-DS-128GB-8GB-GR
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Samsung Galaxy S21 5G
Flagship Power. Pro Camera. 5G Speed.
Experience premium performance, pro-grade photography, and ultra-smooth performance in a sleek Phantom Gray design.
Premium Phantom Gray Design
Sleek, modern design with a refined finish that delivers both style and durability.
Dynamic AMOLED 2X Display
Enjoy vibrant colors, deep contrast, and ultra-smooth visuals with a stunning 120Hz display.
Pro-Grade Camera System
Capture incredible photos and videos with advanced camera technology and intelligent AI features.
8K Video Recording
Shoot cinematic 8K videos and extract high-resolution 33MP photos directly from your footage.
30X Space Zoom
Capture distant details with powerful zoom capabilities and improved stabilization.
Super Smooth Video
Record ultra-stable, high-quality videos with Super Steady and adaptive frame rate technology.
Next-Level Performance
Powered by a 5nm processor for lightning-fast speed, efficient multitasking, and smooth gaming.
All-Day Intelligent Battery
Smart battery technology adapts to your usage, delivering long-lasting power throughout the day.
Gorilla Glass Victus™ Protection
Built with one of the toughest smartphone glasses for enhanced durability and scratch resistance.
Advanced Security
Samsung Knox protects your data from the chip up, ensuring secure and private usage.
Store More, Do More
128GB storage lets you keep your photos, videos, and apps without compromise.
Factory Unlocked GSM
Compatible with GSM carriers worldwide. Not compatible with Verizon, Sprint, or CDMA networks.
Important Information
- Model: Samsung Galaxy S21 5G (G9910)
- Color: Phantom Gray
- 128GB Internal Storage
- 8GB RAM
- Dynamic AMOLED 2X Display (120Hz)
- 8K Video Recording + 30X Zoom
- Pro-Grade Camera System
- 5nm High-Speed Processor
- All-Day Intelligent Battery
- Gorilla Glass Victus™ Protection
- Samsung Knox Security
- Factory Unlocked (GSM Only)
- Not compatible with Verizon, Sprint, or CDMA networks
- International Version
- Please verify carrier compatibility before purchase
Buy Samsung Galaxy S21 5G Today
Available now at MyWorldPhone.com
| NETWORK | Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) | |
| CDMA 800 / 1900 & TD-SCDMA | ||
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| CDMA2000 1xEV-DO | ||
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G991U1 | |
| 5G bands | 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1 | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G |
| LAUNCH | Announced | 2021, January 14 |
|---|---|---|
| Status | Available. Released 2021, January 29 |
| BODY | Dimensions | 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in) |
|---|---|---|
| Weight | 169 g (Sub6), 171 g (mmWave) (5.96 oz) | |
| Build | Glass front (Gorilla Glass Victus), plastic back, aluminum frame | |
| SIM | Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by) | |
| IP68 dust/water resistant (up to 1.5m for 30 mins) |
| DISPLAY | Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak) |
|---|---|---|
| Size | 6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio) | |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~421 ppi density) | |
| Protection | Corning Gorilla Glass Victus | |
| Always-on display |
| PLATFORM | OS | Android 11, One UI 3.1 |
|---|---|---|
| Chipset | Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China |
|
| CPU | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680) - USA/China |
|
| GPU | Mali-G78 MP14 - International Adreno 660 - USA/China |
| MEMORY | Card slot | No |
|---|---|---|
| Internal | 128GB 8GB RAM, 256GB 8GB RAM | |
| UFS 3.1 |
| MAIN CAMERA | Triple | 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video |
|---|---|---|
| Features | LED flash, auto-HDR, panorama | |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS |
| SELFIE CAMERA | Single | 10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, Dual Pixel PDAF |
|---|---|---|
| Features | Dual video call, Auto-HDR | |
| Video | 4K@30/60fps, 1080p@30fps |
| SOUND | Loudspeaker | Yes, with stereo speakers |
|---|---|---|
| 3.5mm jack | No | |
| 32-bit/384kHz audio Tuned by AKG |
| COMMS | WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot |
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Radio | FM radio (Snapdragon model only; market/operator dependent) | |
| USB | USB Type-C 3.2, USB On-The-Go |
| FEATURES | Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
|---|---|---|
| Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified) |
| BATTERY | Type | Li-Ion 4000 mAh, non-removable |
|---|---|---|
| Charging | Fast charging 25W USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Reverse wireless charging 4.5W |
| MISC | Colors | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink |
|---|---|---|
| Models | SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910 | |
| SAR | 0.74 W/kg (head) 1.08 W/kg (body) | |
| SAR EU | 0.46 W/kg (head) 1.51 W/kg (body) |
| TESTS | Performance | AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen) |
|---|---|---|
| Display | Contrast ratio: Infinite (nominal) | |
| Camera | Photo / Video | |
| Loudspeaker | -26.4 LUFS (Good) | |
| Battery life |
Endurance rating 93h
|
| UPC/EAN | 8806092117068 |
|---|
| Warranty | No Warranty |
|---|
| 1pcs | Samsung Galaxy S21 5G SM-G9910 |
| 1pcs | Battery. |
| 1pcs | Home Charger. |
| 1pcs | Headphone. |
| 1pcs | Data Cable. |
| 1pcs | User Manual. |
1. Which exact Galaxy S21 is this?
This is the Samsung Galaxy S21 5G SM-G9910 with 8GB RAM, 128GB storage and Phantom Gray finish. Samsung Hong Kong officially offered this exact memory/color combination.
2. Is SM-G9910 an official Samsung model?
Yes. Samsung Hong Kong maintains an official support page specifically for SM-G9910.
3. Is Phantom Gray an official color?
Yes. Samsung Hong Kong officially lists Phantom Gray for the Galaxy S21.
4. Is 8GB + 128GB official?
Yes. Samsung Hong Kong lists the Galaxy S21 with 8GB RAM + 128GB and 8GB + 256GB configurations.
5. Is the 128GB Phantom Gray combination specifically official in Hong Kong?
Yes. Samsung’s Hong Kong launch information specifically lists Galaxy S21 8GB/128GB in Phantom Gray and Phantom Violet.
6. Is this the same hardware as every international Galaxy S21?
No. The S21 was sold with different chipsets, modem configurations and SIM arrangements depending on region.
7. Which chipset does the exact SM-G9910 use?
Qualcomm Snapdragon 888. Samsung Hong Kong specifically lists Snapdragon 888 for its Galaxy S21 lineup.
8. Is the Exynos 2100 row on the current page relevant to this exact G9910?
No. That is the biggest specification-mixing problem on the page. Exact G9910 copy should focus on Snapdragon 888.
9. Is it a Dual-SIM phone?
Yes. Samsung Hong Kong specifies Nano-SIM + Nano-SIM and Dual-SIM Dual-Standby.
10. Does this exact Hong Kong G9910 specification advertise eSIM?
No. The Samsung Hong Kong specification for G9910 lists two physical Nano-SIMs. Do not copy eSIM information from U.S. or other regional S21 variants into this page.
Snapdragon 888 performance
11. What processor does the SM-G9910 use?
Qualcomm Snapdragon 888 5G Mobile Platform.
12. What process technology does Snapdragon 888 use?
5nm.
13. Is it a 64-bit processor?
Yes. Qualcomm specifies a 64-bit Kryo 680 CPU.
14. What is the maximum CPU frequency?
Up to 2.84GHz.
15. What CPU does Snapdragon 888 use?
Qualcomm Kryo 680.
16. What is the CPU architecture based on?
The Prime core uses Arm Cortex-X1 technology.
17. What GPU does the exact Snapdragon 888 platform use?
Qualcomm Adreno 660.
18. Is the Adreno 660 line on your live page correct for G9910?
Yes. Because G9910 uses Snapdragon 888, Adreno 660 is correct.
19. What NPU/AI processor does Snapdragon 888 use?
Qualcomm Hexagon 780, part of Qualcomm’s sixth-generation AI Engine.
20. Does Snapdragon 888 support advanced gaming features?
Yes. Qualcomm lists Snapdragon Elite Gaming, Variable Rate Shading and Game Quick Touch for the platform.
Display
21. How large is the screen?
6.2 inches measured across the full rectangle.
22. Is the screen flat or curved?
Flat.
23. What panel technology does it use?
Dynamic AMOLED 2X Infinity-O Display.
24. What is the resolution?
2400 × 1080 FHD+.
25. What is the pixel density?
421 PPI.
26. What refresh rate does it support?
An adaptive 48–120Hz refresh range.
27. Is 120Hz always active?
No. Samsung dynamically adjusts the refresh rate according to displayed content.
28. Does the display support HDR10+?
Yes. It is officially HDR10+ certified.
29. How bright can it get?
Samsung advertises up to 1300 nits peak brightness.
30. What contrast ratio does Samsung advertise?
Up to 2,000,000:1.
Display quality & protection
31. Does it support DCI-P3 color?
Samsung says the display achieved 100% Mobile Color Volume in the DCI-P3 color range under its certification criteria.
32. What is Eye Comfort Shield?
It is Samsung’s blue-light-management feature designed to reduce eye strain.
33. Does the S21 support Always-On Display?
Yes. Your existing specification is consistent with the S21 platform.
34. What glass protects the front?
Corning Gorilla Glass Victus.
35. Does the S21 have Gorilla Glass Victus on the rear?
No. The base Galaxy S21 uses a high-strength polymer rear rather than a glass rear. Samsung describes the rear as a high-strength polymer with matte finish.
36. What is the correct rear material?
A high-strength polymer rear panel with matte/haze finish.
37. Does it have a metal frame?
Yes. Samsung specifically describes the Contour Cut camera design as blending into the device’s metal frame.
38. Is Phantom Gray glossy?
Samsung describes the S21 colors as using a haze/matte finish.
39. Is the ~87.2% screen-to-body ratio on MyWorldPhone an official Samsung value?
No official Samsung Hong Kong specification reviewed here gives that percentage. It appears to be third-party/calculated data.
40. What should the retail page do with that ratio?
Either remove it or clearly label it as an approximate calculated figure rather than a Samsung-published specification.
Camera system
41. How many rear cameras are there?
Three.
42. What are the three cameras?
A 12MP wide + 64MP telephoto + 12MP ultrawide system.
43. What is the main camera resolution?
12MP.
44. What is the main camera aperture?
f/1.8.
45. Does the main camera have OIS?
Yes.
46. Does the main camera use Dual Pixel autofocus?
Yes.
47. What is the telephoto camera resolution?
64MP.
48. What is its aperture?
f/2.0.
49. Does the telephoto camera have OIS?
Yes. Samsung’s official specification lists OIS on the 64MP tele camera.
50. What zoom terminology does Samsung use?
3× Hybrid Optic Zoom plus up to 30× Space Zoom.
Ultrawide, selfie & zoom
51. What is the ultrawide camera resolution?
12MP.
52. What is the ultrawide aperture?
f/2.2.
53. What is its field of view?
120°.
54. What pixel size does Samsung give for the ultrawide?
1.4µm.
55. What is the front camera resolution?
10MP.
56. What is the front camera aperture?
f/2.2.
57. Does the selfie camera autofocus?
Yes. Samsung specifies Dual Pixel AF.
58. What is the front-camera field of view?
Approximately 80°.
59. What is the selfie pixel size?
1.22µm.
60. Does 30× Space Zoom mean 30× optical zoom?
No. Samsung states that Space Zoom combines the 3× Hybrid Optic Zoom with digital/super-resolution processing up to 30×.
Video
61. What is the maximum video recording resolution?
8K at 24fps.
62. Does it support 4K60?
Yes.
63. Does it support 1080p240 slow motion?
Yes. Samsung lists 240fps at FHD.
64. Does it support 960fps Super Slow-mo?
Yes, Samsung lists 960fps at HD.
65. What is 8K Snap?
It lets users extract high-resolution still images from recorded 8K footage. Samsung marketed roughly 33MP still extraction from 8K video.
66. What is Director’s View?
It lets users preview and switch between camera perspectives while recording.
67. What is Vlogger View?
It allows simultaneous front-and-rear-camera video capture.
68. Does Super Steady support 60fps?
Yes. Samsung specifically advertised improved 60fps Super Steady, with Super Steady limited to FHD.
69. Does it support Single Take?
Yes. Samsung introduced Single Take 2.0 with this generation.
70. Does it support HDR10+ video?
The Galaxy S21 platform supports HDR10+ video functionality.
Memory & storage
71. How much RAM does this exact phone have?
8GB LPDDR5.
72. How much internal storage?
128GB.
73. What storage standard does it use?
UFS 3.1. Your current page’s storage technology is appropriate for the S21 platform.
74. Does it support microSD?
No. Samsung Hong Kong explicitly states microSD not supported.
75. Is there also a 256GB version?
Yes. Samsung Hong Kong offered both 128GB and 256GB versions with 8GB RAM.
76. Should the exact 128GB page list both variants?
You can mention that another storage configuration existed, but the main specification should clearly identify this exact SKU as 8GB/128GB.
77. Is all 128GB available to users?
No. Samsung notes that operating-system and preloaded software reduce available user storage.
78. Does the lack of microSD matter?
For users with heavy 8K/video storage requirements, yes. Cloud or external USB storage may be useful.
79. Can USB storage devices be connected?
USB OTG functionality is supported on the Galaxy S21 platform.
80. Does it support Samsung Smart Switch?
Yes. Samsung officially lists Smart Switch support for the Galaxy S21 family.
Battery & charging
81. What battery capacity does the Galaxy S21 have?
4000mAh typical.
82. What is its minimum/rated capacity?
Samsung’s official U.S. launch specification gives 3880mAh rated minimum.
83. Is the battery removable?
No.
84. What is the maximum wired charging rate?
25W Super Fast Charging.
85. Which wired charging protocol does Samsung specify?
USB Power Delivery 3.0 with PPS, with compatibility for Samsung AFC and QC2.0.
86. Does it support wireless charging?
Yes.
87. What is the maximum wireless charging rate?
15W Fast Wireless Charging.
88. Does it support reverse wireless charging?
Yes. Samsung calls the feature Wireless PowerShare.
89. Should the listing use exactly “4.5W reverse wireless charging”?
For manufacturer-grounded copy, I would simply use Wireless PowerShare because Samsung Hong Kong confirms the feature but does not publish a wattage in its exact G9910 specification.
90. Can the 15W wireless charging pad on MyWorldPhone stay?
Yes. Unlike several recent phones we reviewed, the Galaxy S21 genuinely supports 15W wireless charging.
Connectivity, software & durability
91. What Wi-Fi does the SM-G9910 support?
Samsung Hong Kong lists Wi-Fi 6 / 802.11ax on 2.4GHz and 5GHz, with MIMO and Wi-Fi Direct.
92. What Bluetooth version?
Bluetooth 5.0.
93. Does it support NFC?
Yes.
94. What navigation systems are supported?
Samsung Hong Kong lists GPS/A-GPS, GLONASS, BeiDou and Galileo.
95. What USB connection does it use?
USB Type-C; Samsung’s S21 family documentation identifies USB 3.2 Gen 1 on supported S21 variants.
96. Does it support video output over USB-C?
Yes. Samsung’s official S21 specification states that wired DisplayPort video output can reach 4K UHD at 60fps with a compatible HDMI/USB-C adapter.
97. Does it support Samsung DeX?
Yes. Samsung Hong Kong currently lists the Galaxy S21 among supported DeX smartphones.
98. What IP rating does it have?
IP68. Samsung tested the S21 under conditions of up to 1.5m of freshwater for up to 30 minutes.
99. What software did it launch with?
It launched with Android 11 / One UI 3.1.
100. How far did official software support progress?
Samsung Hong Kong’s current SM-G9910 support resources include an Android 15 user guide, and Samsung’s current regional support information identifies SM-G9910 with Android 15. Therefore, the clean retail wording is “launched with Android 11; official Samsung support extends through Android 15 for this regional model.”