Test Apple iPhone 8: success without forcing


Apple's iPhone 8 takes up the main lines of the iPhone 7. It features a 4.7-inch (11.9 cm) IPS HD panel (1,334 x 750 px) screen, with a design whose only evolution is the appearance of a glass back instead of metal. Like every year, Apple is evolving the insides of its smartphone and switching to an A11 Bionic chip, more powerful and tailored to the emerging uses of augmented reality and artificial intelligence. RAM is still limited to 2 GB, while the choice is left between 64 and 256 GB for storage - still an important choice, as microSD is still not making its entrance. On the photo side, Apple continues to rely on a 12MP sensor on the back, topped with a stabilized optics opening at f/1.8. The double module remains this year again reserved for the Plus version. The selfies are left to the care of a 7 Mpx sensor. Of course, iOS 11 is used on the software side and a battery of 1,821 mAh powers the whole system. In terms of connectivity, Wi-Fi, Bluetooth 5.0 and 4G LTE are present, NFIt is also present, but it remains locked in the use of Apple Pay.

design of the iPhone 8 has not changed much.

For get an iPhone 8, it costs 809 € for the 64GB version and 979 € for the 256GB version.

Ergonomics and design

iPhone 8 is the 4th generation of Apple smartphones to take up the same design: a rare immobility in an extremely dynamic market. The novelty has been reserved for the iPhone X, which introduces a design with a screen occupying a large part of the front panel. The iPhone 8 remains one of the least optimized smartphones on this point, with an occupancy rate of less than 66%. At a time when manufacturers are advertising with more than 80%, this is a blot on the face of the screen.

The back of the iPhone 8 is now made of glass.

Cependant, the wide edges of the iPhone 8 are much less disabling than those of the 8 Plus. The small size of the iPhone can still be used perfectly with one hand and does not clutter the pocket of its owner. While the general lines of the terminal remain the same, there is still a small change. The shell of the iPhone 8 is no longer a single piece of metal. The back of the device is now dressed in glass, a choice linked to the introduction of induction charging. Aesthetically speaking, it is up to each person to make up his own mind, but in terms of grip, glass is much less slippery than metal. Good news for the clumsy.

Pas of 3.5 mm jack.

fingerprint reader on the iPhone 8 is always integrated into the button on the front. It works without a hitch and is still one of the most powerful on the market. For those who haven't experienced this new button on the iPhone 7, it should be noted that it is no longer a physical button that sticks into the terminal, but a touch-sensitive button linked to theTaptic Engine.

Toujours a single photo module on the back.

iPhone 8 has the advantage of being IP67 certified, i.e. it is dustproof and waterproof (up to 1 m deep for 30 min). On the other hand, there is still no 3.5mm headphone jack output. You will need to use wireless headphones or the supplied adapter.


iPhone 8 doesn't taste the joys of an Oled screen and must once again be content with an IPS slab. With a contrast ratio of 1,617:1, it is at the top of the basket for LCD technology, but well below the almost infinite contrast of Samsung's Amoled tile types. With a maximum brightness of 590 cd/m² and a light reflection rate of 8%, however, the iPhone 8 has no problem remaining perfectly readable in bright sunlight. The 1,334 x 750 px resolution of the display allows it to be thin enough for most uses.

Côté colorimetry, the iPhone 8 shows a small decrease compared to its predecessor. Beware however, it is far from sliding on the wrong side of the barrier and remains very good in the field. We measured a delta E at 2.7, compared to 1.4 on the iPhone 7. Not a scandal, an untrained eye won't be able to tell the difference at all. The color temperature, at 6,900 K, is quite close to the norm (6,500 K). Just like its big brother, the iPhone 8 is equipped with True Tone technology, which adapts the temperature to the lighting environment.

Question reactivity, the iPhone 8 appears as an almost perfect clone of its predecessor. We found a touch delay of 42 ms, one of the best on the market, and a persistence of 16 ms, which is satisfactory for an LCD screen.


iPhone 8, like the 8 Plus, comes with the new Apple A11 Bionic chip, promised to deliver ever higher performance scores. In practice, nothing seems to be able to slow down the beast, which swallows all uses without batting an eyelid. Even augmented reality, which makes its appearance on iOS 11, works without any slowing down problem. The iPhone 8 is further proof that a smartphone can still run like clockwork with only 2 GB of RAM.

Températures during CPU/iGPU load.

In In terms of heat emission, the behavior of the iPhone 8 is very close to that of the 8 Plus. When its CPU and iGPU are heavily loaded, its surface temperature reaches just over 39°C over a small area. Recording a 10-minute video after capturing 10 photos is a little more forgiving, with a maximum of 35 °C measured outside on a small area surrounding the photo module. Nothing to get stuck in the camera.

Températures in photo + video use.

For the video game, Apple's home-made iGPU is also excellent. All the games in the App Store can be launched on the iPhone 8 without fear of encountering lags or slowdowns. Even the most demanding 3D games run smoothly. The iPhone 8 is an excellent pocket-sized console.


Pas of 3.5 mm jack to put under the tooth of our analyzer. The audio performance of the iPhone 8 is therefore based on the adapter provided by Apple or on the quality of the Bluetooth headset associated with it. The former still ensures a good experience, with comfortable power and distortion-free sound. The dynamic range is in the average of what we measure on smartphones and the stereo image offers a satisfactory width.

Comme for the Plus version, the iPhone 8 has two speakers for multimedia. One is located on the lower edge, while the second is located at the top, on the front. That's enough to provide stereo, but it's not necessarily enough for comfortable music listening. Not surprisingly, the bass is absent from the reproduced signal and this system will be much more suitable for voices.


This year, Apple has chosen not to make any substantial changes to its photo recipe on the iPhone 8. The back-end module is based on a 12MP sensor and a stabilized optics opening at f/1.8, similar to what is found on the iPhone 7. The novelty is more subtle, since it is hidden in the image processing applied to the pictures. There is a progression in the quality of the images produced by the iPhone, with better management of micro-contrast and a warmer white balance. Compared to the result of anHTC U11, the iPhone is lagging behind in terms of stitching. When there is enough light, iPhone 8 produces good quality photos. The responsiveness of the camera remains a sure thing, and Apple's device can take a succession of pictures without faltering.

iPhone also progresses in low light conditions. Image processing leaves a little more room for electronic noise, but loses less detail when smoothing. However, it should be noted that to achieve this result, the iPhone 8 chooses to trigger at 1/4 s and ISO 320. A relatively slow speed which, freehand, does not guarantee perfect image sharpness. Here again, the HTC U11 achieves a more satisfactory result by capturing more light and offering moderate smoothing, an interesting performance, since it releases at 1/10 s and ISO 2,210. Of all the competitors in the high-end segment, the iPhone 8 is the slowest shutter release.

Côté video, the iPhone 8 is positioned as a very good ally. UHD movie capture is among the best on the market, and the iPhone manages to capture beautiful images without any visible slowdown. Focus tracking is very efficient, as are exposure measurements.

7MP front photo sensor is pretty good too. Without completely revolutionizing the world of self-portraits, it also remains a sure value. The exposure management is almost always right, while the smoothing remains moderate.


L'autonomy has never been the strong point of the "small version" of the iPhone. Contrary to the iPhone 8 Plus, which is really strong on this part, the iPhone 8 is well below the expectations that we have for a smartphone. This year, the American manufacturer chose to reduce the size of the battery, promising that it would still provide endurance similar to that of the iPhone 7. The iPhone 8 scored very close to its predecessor in our Netflix reading test. However, this score is not very representative of the reality of daily use and the iPhone 8 is much less durable than its Netflix results suggest.

In In practice, the iPhone 8 is able to make it to the evening in intensive use and to last a little longer, until the morning of the second day, in more standard use. A performance similar to the one we noticed on the iPhone 7, which at the time showed a positive evolution compared to the previous version. We can still regret that with a definition only HD, Apple is not able to offer us better.

For recharging, the problem remains the same as for the iPhone 8 Plus. The iPhone 8 is compatible with fast charging, but Apple does not provide a charger capable of activating it in the box. With the supplied charger, it takes about 1 hour and a half to fully recharge.