New in Stiftung Warentest's mobile phone test: ?38 current smartphones. Among them are three top models from Samsung: the ?Samsung Galaxy S21 Ultra 5G, the ?Samsung Galaxy S21 5G and the ?Samsung Galaxy S21+ 5G. From Huawei, the likewise high-priced ?Huawei Mate 40 Pro has been added...
OPPO Reno4 Z
128 GB, Dew White, 6.57", Dual SIM, 48 Mpx, 5GProduct details
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- slim design, very high quality and stable despite a lot of plastic
- LCD with very good display including 120 Hertz
- Mediatek SoC delivers good performance and connectivity
- Main optics with very good photo quality
- great speech quality
- Protective cover and display foil included

Oppo is also a serious contender in the lucrative mid-range segment and is entering the race with the Reno 4Z, an affordable 5G smartphone. Like the competition, Oppo delivers a buttery-smooth LCD with 120 hertz. Inside, a Mediatek Dimensity 800 with 8 GBytes sets the pace. Compared to the competition, Oppo is a little more economical with the 4000 mAh battery...

Oppo is also a serious contender in the lucrative mid-range segment and is entering the race with the Reno 4Z, an affordable 5G smartphone. Like the competition, Oppo delivers a buttery-smooth LCD with 120 hertz. Inside, a Mediatek Dimensity 800 with 8 GB RAM sets the pace. Compared to the competition, Oppo is a little more economical with the 4000 mAh battery...
- 120 Hz display
- Good front camera
- Battery with a lot of endurance
- Quick
- Night mode quasi night vision mode
- Swipe gestures are prone to incorrect input

- Display
- Camera
- Chipset
- Haptics
- Loudspeaker
Oppo's Reno 4 is arguably one of the price/performance winners in the mid-range segment in 2020. It's not for nothing that the device made it into our Top 100 (caution, spoilers!). Solid camera setup, good display and an upper class chipset - not to mention face recognition and under-glass fingerprint scanner: 5 stars.