
Following their successful Redmi K20 (Mi 9T) sub- and value-flagships earlier this year, Xiaomi’s followups have just launched featuring high-refresh displays but also some downgrades.
Xiaomi‘s value-oriented brand Redmi launched their excellent debut sub-flagship and its near-identical value-flagship Redmi K20 and K20 Pro, known globally as the Xiaomi Mi 9T and 9T Pro, in only May this year, featuring just about all the specs and features you could want from a phone at incredibly low prices.
Even in only these last six months, though, the mobile industry has found a new obsession; high refresh displays. While most displays on TVs, computers, laptops, and phones run at the standard 60hz (60 updates per second), the last year has seen a dramatic uptick in the number of smartphones offering 90hz and even 120hz displays. Growing from only expensive Razer and Asus ROG offering high-refresh phones in 2018, 2019 has seen phones as low as that value-flagship bracket offering the technology.
Not to be outdone by their keen Realme imitators and competition with their Realme X2 Pro offering a 90hz AMOLED amongst other value-flagship specs, Xiaomi has now updated their sub-flagship brand with their own high-refresh display – but unfortunately, they seem to have sacrificed other particulars of the phone in order to achieve this. The wonderfully low price remains intact though:
Redmi K20 (Mi 9T) | Redmi K20 Pro (Mi 9T Pro) | Redmi K30 | Redmi K30 5G | |
Display | 6.4″ 1080x2340p 19.5:9 AMOLED | 6.4″ 1080x2340p 19.5:9 AMOLED | 120hz 6.67″ 1080x2400p 20:9 IPS | 120hz 6.67″ 1080x2400p 20:9 IPS |
Processor | Snapdragon 730 (2 x 2.2Ghz A76 + 6 x 1.8Ghz A55) with Adreno 618 GPU |
Snapdragon 855 (1 x 2.84Ghz A76 + 3 x 2.42Ghz A76 + 4 x 1.80Ghz A55) with Aredno 640 GPU |
Snapdragon 730G (2 x 2.2Ghz A76 + 6 x 1.8Ghz A55) with Adreno 618 GPU (overclocked) |
Snapdragon 765G (1 x 2.4Ghz A76 + 1 x 2.2Ghz A76 + 6 x 1.8Ghz A55) with Adreno 620 GPU |
RAM | 6/8GB LPDDR4x | 6/8GB LPDDR4x | 6/8GB LPDDR4x | 6/8GB LPDDR4x |
ROM | 64/128/256GB UFS2.1 | 64/128/256GB UFS2.1 | 64/128/256GB UFS2.1 | 64/128/256GB UFS2.1 |
Rear Cameras | 48MP (binned 12MP) F/1.8 26mm (standard) 1/2″ 0.8µm with PDAF autofocus 13MP F/2.4 12mm (0.5x ultrawide) 1/3″ 1.12µm 8MP F/2.4 53mm (2x zoom) 1/4″ 1.12µm with PDAF autofocus Up to 4k30, 1080p960 (interpolated), 1080p240, 720p960 video |
48MP (binned 12MP) F/1.8 26mm (standard) 1/2″ 0.8µm with PDAF autofocus, OIS 13MP F/2.4 12mm (0.5x ultrawide) 1/3″ 1.12µm 8MP F/2.4 53mm (2x zoom) 1/4″ 1.12µm with PDAF autofocus Up to 4k60, 1080p960 video |
64MP (binned 16MP) F/1.9 26mm (standard) 1/1.7″ 0.8µm with PDAF autofocus 8MP F/2.2 13mm (0.6x ultrawide) 1/4″ 1.12µm 2MP F/2.4 (macro) 1/5″ 1.75µm 2MP F/2.4 (RGB depth) 1/5″ 1.75µm Up to 4k30, 1080p960 (interpolated), 1080p240, 720p960 video |
64MP (binned 16MP) F/1.9 26mm (standard) 1/1.7″ 0.8µm with PDAF autofocus 8MP F/2.2 13mm (0.6x ultrawide) 1/4″ 1.12µm 2MP F/2.4 (macro) 1/5″ 1.75µm 2MP F/2.4 (RGB depth) 1/5″ 1.75µm Up to 4k30, 1080p960 (interpolated), 1080p240, 720p960 video |
Front Camera(s) | Motorized pop-up 20MP (4MP binned) F/2.2 0.8µm | Motorized pop-up 20MP (4MP binned) F/2.2 0.8µm | Dual notched 20 MP (5MP binned) F/2.2 27mm (standard), 1/3.4″ 0.8µm 2MP F/2.4 (RGB depth) 1/5″ 1.75µm |
Dual notched 20 MP (5MP binned) F/2.2 27mm (standard), 1/3.4″ 0.8µm 2MP F/2.4 (RGB depth) 1/5″ 1.75µm |
Battery | 4000mAh with 18W USB-PD/Quick Charge 4 fast charging | 4000mAh with 27W USB-PD/Quick Charge 4+ fast charging | 4500mAh with 27W USB-PD/Quick Charge 4+ fast charging | 4500mAh with 27W USB-PD/Quick Charge 4+ fast charging |
Software | MIUI 11 on Android 10 | MIUI 11 on Android 10 | MIUI 11 on Android 10 | MIUI 11 on Android 10 |
Connectivity | USB 2.0 Type-C, WiFi 802.11 a/b/n/ac, Bluetooth 5.0, NFC, Radio, 3.5mm headphone jack | USB 2.0 Type-C, WiFi 802.11 a/b/n/ac, Bluetooth 5.0, NFC, Radio, 3.5mm headphone jack | USB 2.0 Type-C, WiFi 802.11 a/b/n/ac, Bluetooth 5.0, NFC, Radio, 3.5mm headphone jack | USB 2.0 Type-C, WiFi 802.11 a/b/n/ac, Bluetooth 5.0, NFC, Radio, 3.5mm headphone jack |
Sensors | Under-display fingerprint, GPS, Accelerometer, Gyro, Proximity, Compass | Under-display fingerprint, GPS (dual band), Accelerometer, Gyro, Proximity, Compass | Under-display fingerprint, GPS, Accelerometer, Gyro, Proximity, Compass | Under-display fingerprint, GPS (dual band), Accelerometer, Gyro, Proximity, Compass |
Dimensions | 156.7 x 74.3 x 8.8mm or 6.17 x 2.93 x 0.35 inches |
156.7 x 74.3 x 8.8mm or 6.17 x 2.93 x 0.35 inches |
165.3 x 76.6 x 8.8 mm or 6.51 x 3.02 x 0.35 inches |
165.3 x 76.6 x 8.8 mm or 6.51 x 3.02 x 0.35 inches |
Weight | 191g or 6.74oz | 191g or 6.74oz | 208g or 7.34oz | 208g or 7.34oz |
Colours | Carbon black, Flame red, Glacier Blue | Carbon black, Flame red, Glacier Blue | Blue, Red, Purple, White | Blue, Red, Purple, White |
Prices | Starts at CNY2000/$300US/$400AU/€250 for 6GB RAM and 64GB ROM | Starts at CNY2500/$400US/$550AU/€3500 for 6GB RAM and 64GB ROM | Starts at CNY1600/$250US/$350AU/€200 for 6GB RAM and 64GB ROM | Starts at CNY2000/$300US/$400AU/€250 for 6GB RAM and 64GB ROM |
As you can see (I bolded the notable differences), the Redmi K30 offers a slightly better processor, 120hz, and a few other small improvements over its Redmi K20 older brother, however it does sacrifice quite a bit to achieve this.

The two most notable and poignant downgrades are the change to an inferior IPS display type over the absolutely excellent sAMOLED display of the K20 generation, meaning a dimmer, less-contrasted, and more power-hungry panel for the gain of 120hz. The other most notable downgrade is in the cameras; not only does the Redmi K30 lose the (debateably useful) zoom camera, but it downgrades the ultrawide sensor significantly while also switching to Samsung‘s 64MP GW1 sensor which has been repeatedly tested to be somewhat inferior to the previous 48MP Sony IMX582.
Also notable, but less important, is the switch from the fancy but vulnerable pop-up camera to a dual-cutout camera; a choice which I do not fancy from a visual perspective, but which is inarguably more functional. Even less important, but still interesting, is the fact that the progenitor K20 had a slightly higher screen:body ratio, is more compact overall, and will likely maintain a battery life lead despite the K30’s marginal battery size increase due to the new IPS panel and its 120hz refresh rate.
Of course, that cost in some (important) specs is for the potentially significant gain of high-refresh technology, and even 5G on the incredibly priced Redmi K30 5G – speaking of price, and the Redmi K30 may suffer a few downgrades but it also somehow manages to downgrade the price as well, while the 5G variant is only equivalent to the original 4G Redmi K20 in price; an incredible consumer achievement (even if the 5G network is pretty wonky at the moment).
With all that said, and the K30’s flaws and strengths covered, I see the K30 line as more of a companion family to the K20 rather than a true successor – especially given its lower pricing; and in that task, it succeeds spectacularly.
That $300 5G though
Source: NDTV