When it comes to design, each smartphone has distinct features. The iPhone 15 sports a sleek design with photo sensors organized in a square at the top left. Available in pink, yellow, green, blue and black, it stands out with its aluminum frame and flat profile. The iPhone 15 is one of the most compact with its 147.6 mm height, 71.6 mm width and 7.8 mm thickness for a weight of 171 grams, making it one of the most compact light. The Samsung Galaxy A55, for its part, offers a minimalist style with photo sensors appearing to be placed on the back cover, and it is available in blue, dark blue, lilac and lime. Its glass back and slightly curved profiles add a touch of sophistication. The Samsung Galaxy A55 is the largest with a height of 161.1mm, width of 77.4mm and thickness of 8.2mm. It weighs 213 grams, which also makes it the heaviest. The Galaxy A15 shares the minimalism of its big brother, with sensors also placed on the rear shell. It is available in midnight blue, light blue and lime, with a matte finish.
The Samsung Galaxy A15, slightly smaller than the Galaxy A55, measures 160.1mm in height, 76.8mm in width and 8.4mm in thickness, with a weight of 200 grams. The Xiaomi Redmi Note 13 Pro stands out for its flat profiles and photo sensors installed on a colored plate that fits harmoniously into the back. It is offered in black, purple and blue. The Xiaomi Redmi Note 13 Pro, with 161.2 mm in height, 74.24 mm in width and 8 mm in thickness, weighs 187 grams, placing it between the two Samsung models in terms of dimensions and weight.
Finally, the Google Pixel 7a, with its sensors integrated into a crossbar at the back, comes in blue, gray, coral and white. Its glass frame and ergonomic design ensure a good grip. Google’s mobile is 152 mm high, 72.9 mm wide and 9 mm thick, weighs 193.5 grams, placing it as an intermediate option in terms of size and weight.
Which is the most powerful and which is the best screen?
In terms of power, the iPhone 15 is equipped with the Apple A16 processor with 6 GB of RAM, delivering remarkable performance. The Xiaomi Redmi Note 13 Pro follows with a Snapdragon 7s Gen 2 and 8 or 12 GB of RAM, making it very powerful as well. The Samsung Galaxy A55 uses an Exynos 1480 with 8GB of RAM, and the Galaxy A15 uses a MediaTek Dimensity 6100+ with 4GB of RAM, positioning them as solid but less capable choices. The Google Pixel 7a, with its Tensor G2 processor and 8 GB of RAM, completes this list, offering intermediate power. In terms of storage, all models except the iPhone 15 and Pixel 7a allow expansion via micro SD.
For screens, the iPhone 15 has a 6.1-inch AMOLED with a maximum brightness of 2000 cd/m², followed by the Redmi Note 13 Pro with a 6.67-inch AMOLED screen and a brightness of 1800 cd/m². m². The Galaxy A55 and A15 have 6.6-inch and 6.5-inch AMOLED displays, respectively, while the Pixel 7a has a 6.1-inch AMOLED display. In terms of refresh rate, the Galaxy A55 and Redmi Note 13 Pro stand out with 120Hz, providing superior fluidity.
What configurations for photos and what connectivity?
For photography, the Xiaomi Redmi Note 13 Pro is impressive with a 200 megapixel main sensor, followed by the iPhone 15 with a 48 megapixel optically stabilized sensor but which renders much more qualitative photos thanks to its image processing and the power of its processor. The Galaxy A55 and A15 offer 50-megapixel sensors, while the Pixel 7a falls in between with a 64-megapixel sensor but also offers better quality photos. It comes second behind the iPhone while the Galaxy A55 offers consistent photos, like the Xiaomi Redmi Note 13 Pro while the Galaxy A15 brings up the rear in this area.
In terms of connectivity, all smartphones are 5G compatible and integrate NFC and Bluetooth 5.x. However, only the Galaxy A15 and Redmi Note 13 Pro offer a jack. In terms of waterproof certification, the iPhone 15 is the most durable with an IP68 certification, followed by the Galaxy A55 and Pixel 7a with IP67. The Redmi Note 13 Pro, with IP54 certification, is less resistant to water and dust. Finally, note that the fingerprint reader is positioned under the screen for the Galaxy A55, Redmi Note 13 Pro and Pixel 7a, while it is absent on the iPhone 15. The Galaxy A15 has a reader on the profile, a practical alternative.
Finally, battery capacity is a crucial criterion for autonomy. The Xiaomi Redmi Note 13 Pro stands out with a 5100 mAh battery, followed by the Samsung Galaxy A55 and A15, each equipped with a 5000 mAh battery. The Google Pixel 7a offers a 4400 mAh battery, while the iPhone 15 has the smallest battery, with a capacity of 3349 mAh. In terms of charging speed, the Redmi Note 13 Pro is the best performer with a power of 67 watts, followed by the Galaxy A55 and A15 at 25 watts each. The Pixel 7a supports 20 watts of charging. The iPhone 15, although not displaying specific charging power, offers wireless charging and reverse charging, a significant advantage.
