Xiaomi Redmi 12 review

GSMArena Team, 3 July 2023.

Big LCD panel on the cheap

The Redmi 12 features a 6.79-inch IPS LCD with 90Hz refresh rate and 1080 x 2460px resolution. It's a somewhat big jump from the 6.5-inch panel on the Redmi 10. There are no fancy HDR-related features, but we didn't expect those in the first place in this price range.

Redmi 12 review

In our tests, the screen peaked at 540 nits, which is really close to the advertised 550 nits and there was no brightness boost in auto mode. We also didn't find a proper ambient light sensor, so we assume the brightness control relies on the front-facing camera, which is energy-consuming and unreliable way to control brightness. Also, 550 nits are not great for a comfortable viewing experience on a bright sunny day. The contrast is nice, though - 1:1507.

Max display brightness test

White test pattern, 75% fill (nits)

  • Manual mode
  • Auto mode
Realme C55 Realme C55
546
6.72" IPS LCD 1080 x 2400 px
Xiaomi Redmi 12 Xiaomi Redmi 12
541
6.79" IPS LCD 1080 x 2460 px
Galaxy A14 5G Galaxy A14 5G
519
6.6" PLS LCD 1080 x 2408 px
Redmi Note 12 4G Redmi Note 12 4G
474
6.67" AMOLED 1080 x 2400 px
Galaxy A24 4G Galaxy A24 4G
464
6.5" Super AMOLED 1080 x 2340 px
Xiaomi Redmi 10 Xiaomi Redmi 10
396
6.53" IPS LCD 1080 x 2400 px
Galaxy A24 4G Galaxy A24 4G
1012
6.5" Super AMOLED 1080 x 2340 px
Redmi Note 12 4G Redmi Note 12 4G
744
6.67" AMOLED 1080 x 2400 px
Realme C55 Realme C55
659
6.72" IPS LCD 1080 x 2400 px
Xiaomi Redmi 12 Xiaomi Redmi 12
541
6.79" IPS LCD 1080 x 2460 px
Galaxy A14 5G Galaxy A14 5G
519
6.6" PLS LCD 1080 x 2408 px
Xiaomi Redmi 10 Xiaomi Redmi 10
477
6.53" IPS LCD 1080 x 2400 px

But although not the best display ever the panel is still more than adequate for the price range. What we can't fail to mention is the absence of a hardware proximity sensor inexcusable. It makes the voice calling experience really bad because the screen often turns on during phone calls and accidental touches are unavoidable.

We were not expecting accurate color reproduction, but we were pleasantly surprised by the Standard color preset. We got dE2000 of just 1.6 and fixes the blue-ish whites and grays from the default color mode. However, this comes at a cost of about 50 nits of brightness. The display can only reach 501 nits in the color-accurate Standard preset.

Battery life

The Redmi 12 runs on a 5,000 mAh battery and the not-so-demanding Helio G88 SoC, so battery life is expectedly great. However, the overall endurance score is actually a bit lower than what the Redmi 10 managed. Looking past the 117h overall score we find some key nuances.

Xiaomi Redmi 12 review

Our battery tests were automated thanks to SmartViser, using its viSerDevice app. The endurance rating denotes how long the battery charge will last you if you use the device for an hour of telephony, web browsing, and video playback daily. More details can be found here.

For instance, the Redmi 12 posts significantly better video playback runtimes but a lower web browsing score. It also fails to impress in the standby and talk time scenarios. The only difference between the Redmi 10 and the Redmi 12 is the software - the latter runs on a more recent MIUI 14 based on Android 13. So we suspect that the current state of the software needs a little tweak.

Still, the overall score isn't bad by any means, it's just a bit lower than expected.

Charging speed

The Redmi 12 supports 18W charging over Power Delivery, which is pretty much what you'd expect from a phone in this price range. The bad news is that the handset doesn't ship with the appropriate charger and you get only a cable inside the box. The good news is that 18W chargers, even Power Delivery-compliant, are easy to come by.

Regarding actual charging speeds, the Redmi 12 performs on par with the competition and even trims a couple of minutes from the Redmi 10.

Charging speed

  • in 15 min
  • in 30 min
  • Time to full charge (from 0%)
Redmi Note 12 4G Redmi Note 12 4G
32%
5000 mAh 33W
Realme C55 Realme C55
27%
5000 mAh 33W SuperVOOC
Galaxy A24 4G Galaxy A24 4G
26%
5000 mAh 25W Samsung PD + PPS
Xiaomi Redmi 12 Xiaomi Redmi 12
16%
5000 mAh 18W PD
Galaxy A14 5G Galaxy A14 5G
15%
5000 mAh 25W Samsung PD + PPS
Redmi Note 12 4G Redmi Note 12 4G
55%
5000 mAh 33W
Realme C55 Realme C55
50%
5000 mAh 33W SuperVOOC
Galaxy A24 4G Galaxy A24 4G
46%
5000 mAh 25W Samsung PD + PPS
Galaxy A14 5G Galaxy A14 5G
30%
5000 mAh 25W Samsung PD + PPS
Xiaomi Redmi 12 Xiaomi Redmi 12
29%
5000 mAh 18W PD
Redmi 10 Redmi 10
26%
5000 mAh 18W
Realme C55 Realme C55
1:09h
5000 mAh 33W SuperVOOC
Redmi Note 12 4G Redmi Note 12 4G
1:11h
5000 mAh 33W
Galaxy A24 4G Galaxy A24 4G
1:29h
5000 mAh 25W Samsung PD + PPS
Xiaomi Redmi 12 Xiaomi Redmi 12
2:07h
5000 mAh 18W PD
Redmi 10 Redmi 10
2:13h
5000 mAh 18W
Galaxy A14 5G Galaxy A14 5G
2:22h
5000 mAh 25W Samsung PD + PPS

Speaker

The Redmi 12 offers a single, bottom-firing speaker - a downgrade from the Redmi 10's dual speaker setup. Not that Redmi 10's pieces were particularly great, but they were loud enough and the stereo setup was extremely hard to come by in this price range. We are sad to see it go in the Redmi 12.

Not only is the new loudspeaker unimpressive when it comes to loudness with an "Average" score of -29.9 LUFS, but the overall quality is not great either. Then again it's unrealistic to expect excellent sound quality from a sub-€200 device and those that care about quality should probably go for a decent pair of headphones anyway.

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.

Reader comments

  • kevin
  • 02 Mar 2024
  • trb

Redmi 12 sucks, at first glance the phone is so good but after few months of using it sucks as hell i hope redmi removed this phone from their company, like bro the phone cant even open the camera faster then a 5 years old samsung phone

  • Perry
  • 28 Feb 2024
  • AJj

Go ro the ear cleaner 😁

  • Jj
  • 08 Feb 2024
  • KZ8

This device have NFC support??