Introduction:

The iPhone 12 and Samsung Galaxy S21 are two premium smartphones that offer different experiences for users who prefer Apple’s iOS or Samsung’s Android ecosystem. Although both phones belong to older flagship generations, they still have features that may appeal to buyers looking for a capable smartphone at a lower price.

Apple launched the iPhone 12 in 2020 with the A14 Bionic chip, an OLED display, a dual-camera system, and 5G connectivity. Samsung introduced the Galaxy S21 in 2021 with a high-refresh-rate AMOLED display, a versatile triple-camera setup, and a powerful processor for its generation.

The iPhone 12 focuses on a compact design, smooth iOS experience, and consistent video recording. The Galaxy S21 offers a 120Hz display, a dedicated telephoto camera, and more flexibility through Android.

Choosing between these devices depends on your priorities. If you prefer iOS, Apple’s ecosystem, and a lightweight phone, the iPhone 12 deserves consideration. If you want a smoother display and more camera options, the Samsung Galaxy S21 may be a better fit.

Before buying either device in India, check its condition, battery health, software support, and seller warranty, especially if you are purchasing a refurbished or used phone.

iPhone 12 vs Samsung Galaxy S21: Specifications

Specifications may vary by market and model variant. Battery capacities are nominal figures, and actual performance depends on device condition and usage.

Price in India

Both smartphones originally launched at premium prices in India. These figures are historical launch prices, not current selling prices.

Current prices can differ significantly because both phones are older models. New retail stock may be limited, while used and refurbished units can have different prices depending on storage, battery health, physical condition, and warranty.

1. Display and Design

The iPhone 12 features a 6.1-inch Super Retina XDR OLED display with sharp resolution, deep blacks, and vibrant colours. Its flat edges and glass back give it a premium appearance. The phone is also relatively lightweight, making it comfortable to carry and use with one hand.

Samsung’s Galaxy S21 has a slightly larger 6.2-inch Dynamic AMOLED 2X display. Its biggest advantage is the refresh rate of up to 120Hz, which makes scrolling, animations, and supported games feel smoother than on the iPhone 12’s 60Hz screen.

Both displays are suitable for watching videos, browsing websites, and using social media. The iPhone offers excellent image quality, while Samsung provides a more fluid viewing experience.

Display winner: Samsung Galaxy S21 because of its 120Hz refresh rate.

2. Camera Comparison

The iPhone 12 has a dual-camera system consisting of a 12MP main camera and a 12MP ultrawide camera. It captures detailed photos, produces natural-looking colours, and performs well in many everyday photography situations. Apple’s video recording is another strong point, particularly for people who create social media content.

The Galaxy S21 includes three rear cameras: a 12MP main camera, a 12MP ultrawide camera, and a 64MP telephoto camera used for zoom-related photography. This setup provides more flexibility when photographing distant subjects or capturing different compositions.

Both phones offer night photography features, portrait modes, and 4K video recording capabilities. Results will depend on lighting, settings, and the condition of the individual device.

For users who mainly record videos and prefer consistent processing, the iPhone 12 is a strong option. For users who want a dedicated telephoto camera and additional shooting flexibility, the Galaxy S21 has an advantage.

Camera winner: Samsung Galaxy S21 for versatility; iPhone 12 for users who prioritise Apple’s video experience.

3. Performance and Gaming

The iPhone 12 uses Apple’s A14 Bionic processor, which was a powerful flagship chip at launch. It handles everyday apps, browsing, video editing, and many games smoothly when the device is in good condition.

Samsung equipped the Galaxy S21 with either the Exynos 2100 or Snapdragon 888, depending on the market. Both were flagship processors designed for demanding applications, multitasking, and gaming.

The Galaxy S21’s 120Hz screen can make supported games and general navigation appear smoother. The iPhone 12, however, benefits from Apple’s hardware and software integration, and many applications run efficiently on the A14 Bionic.

Neither phone should be judged on its original performance alone. Battery degradation, overheating, storage capacity, and software compatibility can affect a used device’s performance today.

Performance winner: Both remain capable for everyday tasks, with the best choice depending on the apps and games you use.

4. Battery Life and Charging

The iPhone 12 has a relatively small battery compared with many modern smartphones. Its battery life was adequate for many users when new, but a second-hand unit may have reduced capacity after several years of use.

The Galaxy S21 has a 4,000mAh battery, providing a larger nominal capacity. However, its 120Hz display and other hardware features can consume additional power, so battery life depends on settings and usage.

The iPhone 12 supports MagSafe wireless charging and Qi charging. Samsung supports Qi wireless charging and wired fast charging. Neither model includes a charging adapter in every retail package, so check the contents before purchasing.

For used devices, battery health is especially important. On an iPhone, check Battery Health in Settings. For a Galaxy S21, test battery performance and inspect the phone for signs of battery swelling or unusual heating.

Battery winner: Samsung Galaxy S21 on nominal capacity, but the condition of a used unit matters more than the original specification.

5. Software and Features

The iPhone 12 runs Apple’s iOS platform and integrates with services such as iCloud, AirDrop, FaceTime, and other Apple devices. Its interface is straightforward, and it can be a convenient choice for users who already own an iPad, Mac, or Apple Watch.

The Galaxy S21 runs Android with Samsung’s One UI interface. It provides more home-screen customisation, flexible file management, and Android-specific features. Samsung’s interface also supports a range of productivity and multitasking options.

Software support is an important consideration in 2026. These phones launched several years ago, and their remaining update eligibility differs. Check the latest official support information for the exact model and region before buying, particularly if security updates are important to you.

The Galaxy S21 and iPhone 12 also differ in charging connectors: the iPhone uses Lightning, while Samsung uses USB-C. This may influence which cables and accessories you can reuse.

Software winner: Choose iPhone 12 for the Apple ecosystem or Galaxy S21 for Android flexibility.

Pros and Cons

Apple iPhone 12

Pros

• Premium OLED display with sharp resolution.
• Powerful A14 Bionic processor for its generation.
• Reliable video recording and capable cameras.
• MagSafe wireless charging support.
• Compact and lightweight design.
• Integration with Apple’s ecosystem.

Cons

• Display is limited to 60Hz.
• No dedicated telephoto camera.
• Lightning connector instead of USB-C.
• Battery condition is a major concern on used units.
• Older hardware compared with current flagship phones.

Samsung Galaxy S21

Pros

• Smooth 120Hz AMOLED display.
• Triple rear-camera system with telephoto capability.
• USB-C charging port.
• Android customisation and flexible file management.
• Under-display fingerprint sensor.
• Larger nominal battery capacity than the iPhone 12.

Cons

• Battery life depends heavily on usage and device condition.
• Processor differs between regional variants.
• Older model with limited remaining software-support life.
• Used units may have display, battery, or repair-related issues.
• No microSD card slot.

Which Phone Should You Buy in India?

The iPhone 12 and Samsung Galaxy S21 can still be useful for everyday tasks, but neither should be purchased without checking its condition and current market price.

Choose the iPhone 12 if you prefer iOS, want a compact phone, record plenty of videos, or already use Apple products. It can be a sensible option if you find a well-maintained unit at a reasonable price.

Choose the Samsung Galaxy S21 if you prefer Android, want a 120Hz display, need a dedicated telephoto camera, and value USB-C connectivity. It offers more flexibility in display refresh rate and rear-camera options.

For buyers purchasing a used phone in India, inspect the screen for burn-in or replacement issues, test the cameras and charging port, check network connectivity, and confirm that the IMEI is valid. Also verify the device’s battery condition and whether any warranty is available.

If both phones cost approximately the same, make your decision based on operating system preference, battery condition, and software-support requirements rather than launch specifications alone.

Frequently Asked Questions

1. Which is better, iPhone 12 or Samsung Galaxy S21?

The Galaxy S21 offers a 120Hz display and a more versatile rear-camera system. The iPhone 12 is a strong option for people who prefer iOS, Apple’s ecosystem, and video recording. The better choice depends on your priorities and the condition of the device.

2. Which phone has the better display?

The Samsung Galaxy S21 has the advantage in smoothness because its display supports up to 120Hz. The iPhone 12 has a sharp OLED display but is limited to 60Hz.

3. Is the iPhone 12 good for gaming?

Yes, the A14 Bionic can handle many games. However, performance, battery life, and thermal behaviour depend on the game’s requirements and the phone’s condition.

4. Does the Samsung Galaxy S21 support 5G?

Yes, the Galaxy S21 supports 5G, but available bands and network compatibility depend on the specific regional variant and mobile carrier.

5. Which phone has a better camera?

The Galaxy S21 offers more camera versatility because it includes a dedicated telephoto camera. The iPhone 12 remains a capable option for photos and video recording.

6. Which phone has better battery life?

The Galaxy S21 has a larger nominal battery, but real-world battery life varies with settings, usage, and battery degradation. Check the battery condition before buying either phone second-hand.

7. Are the iPhone 12 and Galaxy S21 worth buying in 2026?

They may be worth considering if priced appropriately and sold in good condition. However, buyers should compare them with newer budget and mid-range phones and check current software-support status before making a decision.

Conclusion

The iPhone 12 vs Samsung Galaxy S21 comparison shows that both phones have distinct advantages. Apple’s iPhone 12 offers a compact design, a capable processor, strong video features, and integration with iOS. Samsung’s Galaxy S21 delivers a smoother 120Hz display, a dedicated telephoto camera, and the flexibility of Android.

For users who value display smoothness and camera versatility, the Samsung Galaxy S21 is an appealing choice. For users who prefer iOS and Apple’s ecosystem, the iPhone 12 remains worth considering.

Ultimately, the best purchase depends on the current price, battery health, physical condition, and remaining software support. Compare these factors carefully before choosing either smartphone in India.