Samsung Galaxy S21 leads
by 12 points on overall. The category breakdown below shows where the gap comes from.
Galaxy S21 leads overall versus Galaxy A18 4G. Build: 47.3 vs 84.
Scoring profile: balanced
Samsung Galaxy A18 4G
Best for users who prioritize battery and software.
Samsung Galaxy S21
Best for users who prioritize performance and camera.
This is MyTechAdvisor's own independently compiled analysis, not the manufacturer's — it's provided for informational purposes only and isn't guaranteed to be complete or error-free. See our editorial policy.
Spec table
Start with the key differences, then expand a section to check the full specifications.
Visible rows
66
Meaningful differences
39
Layout
Full side-by-side mode
Display Size
Key differenceResolution
Key differenceRefresh Rate
Key differencePeak Brightness
Key differencePixel Density
Key differenceHDR Support
Key differenceDisplay Protection
Key differencePanel Type
| Specification | Samsung Galaxy A18 4G | Samsung Galaxy S21 |
|---|---|---|
Display Size Samsung Galaxy A18 4G leads | 6.7"Better | 6.2" |
Resolution Samsung Galaxy S21 leads | 1080 x 2340 | 1080 x 2400Better |
Refresh Rate Samsung Galaxy S21 leads | 90Hz | 120HzBetter |
Peak Brightness Samsung Galaxy S21 leads | 775 nits | 1300 nitsBetter |
Pixel Density Samsung Galaxy S21 leads | 385 ppi | 424 ppiBetter |
Panel Type Close match | OLED | OLED |
HDR Support Samsung Galaxy S21 leads | No | YesBetter |
Display Protection Samsung Galaxy S21 leads | Corning Gorilla Glass 3 | Corning Gorilla Glass VictusBetter |
RAM
Key differenceGeekbench (Single)
Key differenceGeekbench (Multi)
Key differenceStorage Type
Key differenceChipset
Key differenceRAM Type
CPU Clock
CPU Cores
CPU Cluster Speeds
AnTuTu Score
Storage
GPU
| Specification | Samsung Galaxy A18 4G | Samsung Galaxy S21 |
|---|---|---|
RAM Samsung Galaxy S21 leads | 4GB | 8GBBetter |
RAM Type Different | LPDDR4X | LPDDR5 |
CPU Clock Different | 2.4GHz | 2.9GHz |
CPU Cores Close match | 8 | 8 |
CPU Cluster Speeds Different | 2x2.4GHz + 6x2.0GHz | 1x2.9GHz + 3x2.80GHz + 4x2.2GHz |
AnTuTu Score Different | 609489 | 584055 |
Geekbench (Single) Samsung Galaxy S21 leads | 980 | 1100Better |
Geekbench (Multi) Samsung Galaxy S21 leads | 2144 | 3400Better |
Storage Close match | 256GB | 256GB |
Storage Type Samsung Galaxy S21 leads | UFS 2.2 | UFS 3.1Better |
Chipset Samsung Galaxy S21 leads | Exynos 1610 | Exynos 2100 (5 nm) - International; Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/ChinaBetter |
GPU Different | Mali-G68 | Mali-G78 MP14 - International; Adreno 660 - USA/China |
Rear Camera
Key differenceRear Camera (All Lenses)
Key differenceRear Sensor Size
Key differenceOptical Zoom
Key differenceOptical Image Stabilization
Key differenceMax Video Resolution
Key differenceFront Camera
Key differenceFront Aperture
Key differenceFront Video Resolution
Key differenceRear Aperture
Digital Zoom
Front Sensor
Camera Features
| Specification | Samsung Galaxy A18 4G | Samsung Galaxy S21 |
|---|---|---|
Rear Camera Samsung Galaxy A18 4G leads | 50MPBetter | 12MP |
Rear Camera (All Lenses) Samsung Galaxy S21 leads | 50MP + 5MP + 2MP | 64MP + 12MP + 12MPBetter |
Rear Sensor Size Samsung Galaxy S21 leads | 1/2.76 | 1/1.76Better |
Rear Aperture Close match | f/1.8 | f/1.8 |
Optical Zoom Samsung Galaxy S21 leads | None (no telephoto) | 1.1xBetter |
Digital Zoom Different | 10x | 30x |
Optical Image Stabilization Samsung Galaxy S21 leads | No | YesBetter |
Max Video Resolution Samsung Galaxy S21 leads | 1080p@30fps | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EISBetter |
Front Camera Samsung Galaxy A18 4G leads | 13MPBetter | 10MP |
Front Sensor Different | 13MP 1/3.1" front camera | 10MP 1/3.24" front camera |
Front Aperture Samsung Galaxy A18 4G leads | f/2.0Better | f/2.2 |
Front Video Resolution Samsung Galaxy S21 leads | 1080p@30fps | 4K@30/60fps, 1080p@30fpsBetter |
Camera Features Different | LED flash, panorama, HDR | LED flash, auto-HDR, panorama |
Generating honest comparison...
Galaxy S21 generally outperforms Galaxy A18 4G across key categories. Chipset: Exynos 2100 (5 nm) - International; Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China vs Exynos 1610 This makes Galaxy S21 the better choice for most users, though Galaxy A18 4G may excel in specific areas.
Best for users who need long battery life. Galaxy A18 4G provides extended usage with strong software.
Best for users who prioritize performance and camera. Galaxy S21 excels in processing power and multitasking.
Non-PTA
PTA
| Price | Samsung Galaxy A18 4G | Samsung Galaxy S21 |
|---|---|---|
| Non-PTA | -- | ≈ Rs 45,920 |
| PTA | -- | -- |
≈ Converted from a fetched price. Store offers, when available, are listed separately.
Choosing between Samsung Galaxy A18 4G and Samsung Galaxy S21 can be tough. This comparison breaks down performance, camera, battery, and listed pricing so you can decide faster.
We focus on practical differences that impact daily use, not just spec sheet noise.
Samsung Galaxy S21 scores higher overall once each category is weighted, making it the safer all‑round pick.
Samsung Galaxy S21 is the better choice overall, winning in 4 key categories.
The top differences are: Display Size (Samsung Galaxy A18 4G advantage), Resolution (Samsung Galaxy S21 advantage), Refresh Rate (Samsung Galaxy S21 advantage), Peak Brightness (Samsung Galaxy S21 advantage), Pixel Density (Samsung Galaxy S21 advantage).
Samsung Galaxy S21 delivers better camera performance overall.
Samsung Galaxy A18 4G offers better battery endurance for heavy use.
Samsung Galaxy A18 4G: non-PTA not available; PTA not entered. Samsung Galaxy S21: non-PTA approximately Rs 45,920; PTA not entered. These are phone reference prices, not optional store offers.
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