Apple phone released in 2011


Presentation of the iPhone 4S

The iPhone 4S released on October 3, 2011, follows the iPhone 4 and precedes the iPhone 5. The “S” refers to the intelligent personal assistant, Siri, which will be integrated into the smartphones of the following generations of the brand at Apple. This iPhone is completely revolutionary for the year 2011. It is the first smartphone to integrate a voice assistant. The iPhone 4S incorporates new features such as iCloud, iMessage and a notification center.

The characteristics of the iPhone 4S


The iPhone 4S has a 3.5-inch Retina display with a resolution of 960 x 640 pixels. The device has a jack plug located on the top left of the smartphone as well as a microphone, useful when you want to mute the sound during calls or during FaceTime.


The phone’s camera, also named iSight by Apple, has an 8-megapixel sensor on the back and can record videos with a resolution of 1180px. For comparison, the camera of the iPhone 4S is improved compared to the iPhone 4. In terms of clarity, there is an improvement of 30% and an improvement of 26% compared to the white balance as well as color accuracy. This improvement is explained by the integration of an additional lens, an infrared filter as well as its wider f / 2.4 aperture and its image signal processing processor.


The processor used is an ARM Cortex-A9 MPCore processor. It also includes a PowerVR SGX543MP2 graphics processor, which delivers graphics performance 7 times higher than the previous one.


The iPhone is equipped with Bluetooth 4.0 as well as Wi-Fi.


The device is equipped with an accelerometer, a proximity sensor as well as a magnetometer and a gyrometer.

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The design of the iPhone 4S simply takes the design of its predecessor. For the firm with the apple, the design must remain coherent and timeless. In comparison with the iPhone 3GS, which is equipped with a curved plastic shell, the iPhone 4S has a straight finish and a flat back.


The phone is available in 8 GB, 16 GB, 32 GB and 64 GB of storage capacity.


In terms of autonomy, the iPhone does not exceed 200 hours on standby, 8 hours in 3G communication, 6 hours in internet browsing with 3G and 9 hours in internet browsing via Wi-Fi.


The Cupertino company has always wanted to make its devices usable for everyone, with or without a disability. Siri voice assistance is therefore useful to be able to use various features of the iPhone 4S. The novelty of iOS 5, the Assistive Touch, is also present to facilitate the use of the iPhone 4S for people with physical and motor disabilities. With just one finger movement, you can perform multi-touch gestures and control iOS features.

Weight and dimensions

With a weight of 140g, the iPhone 4S is 115mm high and 58mm wide and 7.7mm thick.

IPhone 4S compatibility

Operating systems

The iPhone 4S runs on iOS 5, a functional, very ergonomic and ultra reliable operating system. This iPhone can be updated to iOS 9.


The iPhone 4S is compatible with several multimedia equipment. Its box includes an Apple charging cable and headphones.

Want to learn more about other iPhones?

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