Oppo Reno15 review

Display

The Oppo Reno15 offers a 6.59-inch AMOLED display with 1,256 x 2,760 pixels (460ppi), 10-bit color depth, 120Hz refresh rate, and HDR10+ support.

Gorilla Glass 7i sheet handles protection.

Oppo advertises 600nits of typical and 1,200nits of maximum automatic brightness. And our display measurements confirm those numbers - we captured 592 nits of maximum typical and 1,188nits of maximum automatic brightness.

The minimum brightness we measured on a white screen was 2 nits.

The peak brightness at 10% white patch was 1,300 nits, and there is no brightness boost in the Gallery app, so even though there is objectively nothing wrong with the screen here, it will prevent HDR photos and videos from displaying properly.

Refresh rate

There are three Refresh Rate modes as part of the Display Settings of the Reno15 - Auto, Standard (fixed 60Hz), and High.

Auto and High do mostly the same - 60Hz for idle screen and video playback, 90Hz for web browsers and some system apps, 60Hz for video streaming apps, and, finally, 120Hz for UI, games, and benchmarks.

When you opt for High, you will be granted access to the App Specific Refresh Rate menu, where you can force a higher refresh rate than the automatically chosen refresh rate (if supported). For example, you can choose 120Hz for Chrome, and 90Hz or 120Hz for Netflix.

HDR and streaming

The screen supports HDR10 and HDR10+, and all streaming apps successfully recognize it, Netflix included.

The Reno15 supports the Android Ultra HDR standard for displaying HDR photos with enhanced tone mapping and a brightness boost for highlights, but as we discovered, the max brightness, even with small patches of white, is not stellar.

Battery life

The Oppo Reno15 is powered by a pretty large battery with a capacity of 6,500mAh - the same as the larger Reno15 Pro Max.

Update, 04 Feb: We've updated the battery results below after further testing. The Endurance score went up from the originally published one.

The Reno15 scored an Active Use Rating of 16:23 hours, which is a great score and just about what we've been seeing from its similarly-equipped competitors.

Charging speed

The Oppo Reno15 supports up to 80W SuperVOOC wired charging, and our review unit came bundled with the appropriate power adapter.

We've completed our charging test with the said adapter and the bundled 8A USB cable.

The Reno15's battery recharged from 1% to 40% in just 15 minutes. We captured 68% of the charge on the 30min mark. And a full charge took 57 minutes, which is roughly in the ballpark of the promised 50min from Oppo.

Note that Oppo's charging settings include the Smart Rapid Charging option, which we used for our testing.

Some of the other notable charging features include Smart charging and a charging limit. Those are recommended options for those wanting to extend the lifespan of the battery.

Bypass charging is available as well, which will come in handy if you are gaming, as charging usually causes the phone to heat up and may cripple the performance.

Speakers - loudness and quality

The Oppo Reno15 Pro offers a familiar dual speaker setup where the earpiece also doubles as a speaker. ColorOS offers one extra step of loudness above the maximum marked as 300%. This step allows for a minor boost in the loudness at the expense of sound quality - meaning high-pitched sounds and poorer vocals.

The setup scored a Very Good mark for loudness when set at 300% volume, thanks to some high-pitched sounds. At the regular 100%, it scored a Good score with -27LUFS.

The sound quality at 100% is very good - with deep and rich output - we can hear bass, the vocals are nice, and so are the high frequencies.

Use the Playback controls to listen to the phone sample recordings (best use headphones). We measure the average loudness of the speakers in LUFS. A lower absolute value means a louder sound. A look at the frequency response chart will tell you how far off the ideal "0db" flat line is the reproduction of the bass, treble, and mid frequencies. You can add more phones to compare how they differ. The scores and ratings are not comparable with our older loudspeaker test. Learn more about how we test here.