In the segment of affordable high-end smartphones, two names automatically come first, the Xiaomi Mi 9 and the OnePlus 7. For several years, these ranges have struggled to obtain the title of flagship killer. This year, the fight is very close. Using our detailed comparison, find out which of the two is the best smartphone.
If the ultra-premium is dominated by manufacturers like Apple, Samsung and Huawei, those who prefer smartphones more affordable but with few concessions can surely turn to OnePlus or Xiaomi. They will find smartphones that have long been called “flagship killers“, able to compete with the biggest names in many areas.
In 2019, the two smartphones that meet this definition are the OnePlus 7 and the Xiaomi Mi 9. But which one to choose?
What is the best smartphone between the OnePlus 7 and the Xiaomi Mi 9? Design, performance, photo, autonomy … Discover our detailed comparison between the two smartphones!
Comparative Data sheets: OnePlus 7 vs Xiaomi Mi 9
|Model||OnePlus 7||Xiaomi Mi 9|
|OS version||Android 9.0||Android 9.0|
|Screen size||6.41 inches||6.39 inches|
|Definition||2340 x 1080 pixels||2340 x 1080 pixels|
|Pixel density||402 dpi||403 dpi|
|SoC||Snapdragon 855||Snapdragon 855|
|Graphics Chip (GPU)||Adreno 640||Adreno 640|
|RAM memory||6 GB, 8 GB||6 GB|
|Internal memory (flash)||128 GB, 256 GB||64 GB, 128 GB|
|Camera (backpack)||Sensor 1: 48 MP|
Sensor 2: 5 MP
|Sensor 1: 48 MP|
Sensor 2: 16 MP
Sensor 3: 12 MP
|Camera (front)||16 MP||20 MP|
|Wireless||Wi-Fi 5 (ac)||Wi-Fi 5 (ac)|
|Bluetooth||5.0 + A2DP + LE||5.0 + A2DP + LE|
|networks||LTE, HSPA, GSM||LTE, HSPA, GSM|
|Supported bands||2100 MHz (B1), 800 MHz (B20), 1800 MHz (B3), 2600 MHz (B7), 700 MHz (B28)||2100 MHz (B1), 800 MHz (B20), 1800 MHz (B3), 2600 MHz (B7), 700 MHz (B28)|
|Ports (Inputs / Outputs)||USB Type-C||USB Type-C|
|Drums||3700 mAh||3300 mAh|
|Dimensions||74.8 x 157.7 x 8.2mm||74.7 x 157.5 x 7.6mm|
|Weight||182 grams||173 grams|
|Colors||Gray, Red||Black, Blue, Purple|
Performance: Snapdragon 855 at its best
OnePlus 7 and Xiaomi Mi 9 are equipped with the Snapdragon 855, the most powerful chip available at the moment, and 6 GB of RAM (even 8 GB for the most powerful version of OnePlus 7).
|OnePlus 7||Xiaomi Mi 9||OnePlus 6T||Honor View 20|
|AnTuTu 7.x||354,812||370,355||297 132||277,167|
|3DMark Slingshot Extreme||5,439||5,499||4,738||3,665|
|3DMark Slingshot Extreme Graphics||6,053||6,355||5,257||3,737|
|3DMark Slingshot Extreme Physics||4,015||3,737||3,521||3,766|
|GFXBench Aztec Vulkan High||23/16 FPS||23/16 FPS||NC||NC|
|GFXBench Car Chase (onscreen / offscreen)||33/40 FPS||36/42 FPS||32/35 FPS||29/31 FPS|
|GFXBench Manhattan 3.0 (onscreen / offscreen)||59/89 FPS||60/101 FPS||59/83 FPS||59/43 FPS|
|Sequential read / write||1429/380 MB / s||796/189 MB / s||736/202 MB / s||852/252 MB / s|
|Random read / write||40.1k / 75.7k MB / s||37.1k / 37.1k IOPS||35.4k / 5.6k IOPS||43.6k / 38.9k IOPS|
In the benchmarks, the two smartphones are very close to each other, and it is the same in everyday life, whether on a standard use or greedy needs such as video games. On this point, OP7 and Mi 9 make no concessions.
Which is the best Smartphone?
OnePlus 7 and Xiaomi Mi 9 are excellent smartphones that offer a good general quality for a price of around 550 euros at their release. While the two cameras are almost identical in many respects, the Xiaomi Mi 9’s versatile camera and wireless charging compatibility finally give it a head start over its competitor, especially since it’s cheaper.
In this duel for the price-quality ratio of the “flagship killer” segment, it is therefore the Xiaomi Mi 9 that wins.
Price and availability
The OnePlus 7 is available from $509.99 at Amazon.