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Samsung Galaxy S II vs iPhone: Key Differences

Guide 10-14195 · Updated · Step by step

The Samsung Galaxy S II and the Apple iPhone (specifically the iPhone 4S, its direct contemporary) differ fundamentally in operating system, design philosophy, and ecosystem. The Galaxy S II runs Android 2.3 Gingerbread with Samsung’s TouchWiz UI, while the iPhone 4S runs iOS 5; the former offers a larger screen, expandable storage, and a removable battery, while the latter provides a more integrated experience with longer software support and a tighter app ecosystem.

Release Context and Positioning

Both phones launched in 2011, a pivotal year for smartphones. The Samsung Galaxy S II was announced in February 2011 and released in May, while the Apple iPhone 4S was announced in October 2011. The Galaxy S II succeeded the original Galaxy S, aiming to compete with the iPhone 4. The iPhone 4S was the last iPhone released under Steve Jobs’ leadership and was essentially an incremental update over the iPhone 4, adding a faster processor, an improved camera, and Siri. These two devices represented the two dominant smartphone platforms of the era: Android (open, customizable, and hardware-varied) and iOS (closed, streamlined, and tightly controlled).

Hardware and Design

The Galaxy S II featured a 4.3-inch Super AMOLED Plus display with a resolution of 480×800 pixels, a 1.2GHz dual-core Exynos processor, 1GB of RAM, and either 16GB or 32GB of internal storage, expandable via microSD. It was remarkably thin at 8.5mm and weighed 116g. The iPhone 4S had a 3.5-inch Retina display (640×960), a dual-core Apple A5 chip, 512MB of RAM, and storage options of 16, 32, or 64GB with no expansion slot. It was thicker (9.3mm) and heavier (140g), with a glass-and-stainless-steel design. The Galaxy S II’s larger screen and lighter build appealed to those who wanted a bigger viewing area and a more plastic, replaceable back cover. The iPhone’s premium materials and smaller footprint appealed to those who preferred a more compact, dense feel.

Operating System and Software

The defining difference is the OS. The Galaxy S II ran Android 2.3 (Gingerbread) with Samsung’s TouchWiz 4.0 skin. Android offered widgets, live wallpapers, and the ability to change default apps and install APKs from outside the official Google Play Store (then called Android Market). Users could customize launchers, icon packs, and even flash custom ROMs. The iPhone 4S ran iOS 5, which introduced Notification Center, iMessage, and iCloud. iOS was (and remains) a closed ecosystem: apps only from the App Store, no file system access, and limited customization. iOS 5 also brought Siri, an early voice assistant, which was exclusive to the iPhone 4S at launch. Android’s openness allowed for more freedom, but iOS offered a more consistent, curated experience with fewer security risks.

Performance and Battery

In real-world use, the Galaxy S II’s Exynos processor was often faster in raw CPU benchmarks than the A5, but the iPhone’s tighter hardware-software integration made it feel equally smooth. Battery life was comparable, but the Galaxy S II had a removable 1650mAh battery, allowing users to carry a spare or replace it when it degraded. The iPhone had a non-removable 1432mAh battery, which meant users had to visit an Apple Store for replacement. The Galaxy S II also supported microSD cards, so storage was effectively unlimited; the iPhone’s storage was fixed at purchase. For heavy users, the Galaxy S II’s replaceable battery and expandable storage were practical advantages; for others, the iPhone’s optimized power management and standby time were sufficient.

Camera and Multimedia

Both phones had 8MP rear cameras, but with different characteristics. The Galaxy S II’s camera had a faster f/2.65 lens, LED flash, and could record 1080p video at 30fps. The iPhone 4S had an f/2.4 lens, also with an LED flash and 1080p video. In practice, the iPhone 4S often produced more accurate colors and better low-light performance, while the Galaxy S II sometimes oversaturated colors due to its AMOLED screen. The front cameras were similar (2MP on the Galaxy S II, VGA on the iPhone). For multimedia, the Galaxy S II’s larger screen and expandable storage made it a better video player, especially for content stored locally. The iPhone had a more polished media experience through iTunes and AirPlay, but required syncing via a computer.

Ecosystem and App Availability

By 2011, the App Store had more apps than Google Play, and iOS apps were generally better optimized due to the limited hardware configurations. The iPhone 4S also benefited from seamless integration with other Apple products: Mac, iPad, and later Apple Watch. Android’s ecosystem was more fragmented, but it offered deeper integration with Google services (Gmail, Maps, Drive) and allowed users to set default apps for email, browser, and navigation. For users heavily invested in Google services, the Galaxy S II was more natural; for those in the Apple ecosystem, the iPhone was a no-brainer. The Galaxy S II also supported Flash (though poorly), which was a big deal at the time for web video, while the iPhone famously did not.

Software Updates and Longevity

Apple provided iOS updates for the iPhone 4S for years (up to iOS 9 in 2015), ensuring security patches and new features. Samsung’s update track record was poorer: the Galaxy S II received Android 4.1.2 Jelly Bean in 2013, but then stopped. This meant the iPhone 4S remained usable and secure longer. For users who planned to keep a phone for more than two years, the iPhone was the safer choice. The Galaxy S II’s custom ROM community kept it alive, but that required technical know-how. This difference is a key factor in the long-term value of each device.

Frequently Asked Questions

Which phone was more popular?

The Galaxy S II was a commercial success, selling over 10 million units in its first few months, and was often called the “best Android phone� of 2011. The iPhone 4S broke pre-order records and sold over 4 million units in its first weekend. Both were top sellers, but the iPhone had a stronger brand loyalty and higher profit margins.

Can I still use these phones today?

Technically yes, but with limitations. The iPhone 4S can run many modern apps (though some require newer iOS), but its 3G-only data (no LTE) makes web browsing slow. The Galaxy S II can still make calls and use basic apps, but its outdated Android version means many apps no longer work, and it is vulnerable to security exploits. Neither is recommended for daily use in 2024.

Which one had better battery life?

In independent tests, the Galaxy S II often lasted slightly longer in talk time and web browsing, but the difference was small. The iPhone’s efficient software and smaller screen gave it comparable endurance. The Galaxy S II’s removable battery was a practical advantage for heavy users.

Did the Galaxy S II have any unique features?

Yes, it had a “Smart Stay� feature that kept the screen on while you looked at it, and a “Pocket Mode� that increased ringtone volume when the phone was in a pocket. These were early attempts at context-aware features that later became standard in Android phones.

Which was better for gaming?

For raw performance, the Galaxy S II’s Exynos chip was often faster, but the iPhone 4S had a more consistent frame rate due to better GPU and software optimization. Many popular games were released simultaneously, but iOS often got exclusive titles or earlier releases. The iPhone’s larger selection of optimized games made it the better gaming device for most users.

Is it worth buying either phone as a collectible?

Yes, both are iconic devices. The iPhone 4S is historically significant as the last with Steve Jobs’s involvement, and the Galaxy S II is remembered as the phone that proved Android could compete with the iPhone. In mint condition, they can fetch modest prices on auction sites, but they are not high-value collectibles compared to earlier models like the original iPhone.

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