Redmi K40

Redmi K40
(Poco F3; Xiaomi Mi 11X in India)
Redmi K40 Pro
Redmi K40 Pro+
(Xiaomi Mi 11i; Xiaomi Mi 11X Pro in India)
Redmi K40 Gaming
(Poco F3 GT in India)
Redmi K40S
Poco F4
Redmi K40 in color Sunny Snow
BrandRedmi
Poco
Xiaomi
ManufacturerXiaomi
TypePhablet
SloganPoco F3: The Real Beast
Mi 11i: The Star Performer
Mi 11X/Pro: Cut Above The Best
Poco F3 GT: Switch It Up!
Poco F4: All the strengths
SeriesRedmi K
Poco F
Mi
First releasedK40/Pro/Pro+: 4 March 2021 (2021-03-04)
Poco F3: 27 March 2021 (2021-03-27)
Mi 11i: April 2021 (2021-04)
Mi 11X/Pro: 27 April 2021 (2021-04-27)
K40 Gaming: 30 April 2021 (2021-04-30)
Poco F3 GT: 23 July 2021 (2021-07-23)
K40S: 17 March 2022 (2022-03-17)
Poco F4: 23 June 2022 (2022-06-23)
PredecessorRedmi K30
Redmi K30 Pro
Redmi K30S Ultra
SuccessorRedmi K50
Xiaomi 12X
RelatedPoco F4 GT
Compatible networks2G, 3G, 4G, 4G LTE, 5G
Form factorSlate
Dimensions
  • K40/Pro/Pro+/Poco F3: 163.7 mm × 76.4 mm × 7.8 mm (6.44 in × 3.01 in × 0.31 in)
  • K40 Gaming: 161.9 mm × 71.9 mm × 8.3 mm (6.37 in × 2.83 in × 0.33 in)
  • K40S/Poco F4: 163.2 mm × 76 mm × 7.7 mm (6.43 in × 2.99 in × 0.30 in)
Weight
  • K40/Pro/Pro+/Poco F3: 196 g (6.9 oz)* K40 Gaming: 205 g (7.2 oz)* K40S/Poco F4: 195 g (6.9 oz)
Operating system
  • Original:
    • K40/Pro/Pro+: MIUI 12 based on Android 11
    • Poco F3: MIUI 12 for Poco based on Android 11
    • K40 Gaming: MIUI 12.5 based on Android 11
    • Poco F3 GT: MIUI 12.5 for Poco based on Android 11
    • K40S: MIUI 13 based on Android 12
    • Poco F4: MIUI 13 for Poco based on Android 12
  • Current:
System-on-chip
CPUOcta-core
  • K40/40S/Poco F3/F4: (1x 3.2 GHz Kryo 585 Prime – Cortex-A77 derivative + 3x 2.42 GHz Kryo 585 Gold – Cortex-A77 derivative + 4x 1.8 GHz Kryo 585 Silver – Cortex-A55 derivative)
  • K40 Pro/Pro+: (1x 2.84 GHz Kryo 680 Prime – Cortex-X1 derivative + 3x 2.42 GHz Kryo 680 Gold – Cortex-A78 derivative + 4x 1.8 GHz Kryo 680 Silver – Cortex-A55 derivative)
  • K40 Gaming: (1x 3.0 GHz Cortex-A78 + 3x 2.6 GHz Cortex-A78 + 4x 2.0 GHz Cortex-A55)
GPU
  • K40/40S/Poco F3/F4: Adreno 650
  • K40 Pro/Pro+: Adreno 660
  • K40 Gaming: Mali-G77 MC9
Memory
  • K40/Pro/Gaming/40S/Poco F3: 6, 8 or 12 GB RAM LPDDR5
  • Poco F3/Mi 11X/Poco F4: 6 or 8 GB RAM LPDDR5
  • K40 Pro+: 12 GB RAM LPDDR5
  • Mi 11i/11X Pro: 8 GB RAM LPDDR5
  • K40 Gaming: 6, 8 or 12 GB RAM LPDDR4X
  • Poco F3 GT: 6 or 8 GB RAM LPDDR4X
Storage128 or 256 GB UFS 3.1
Removable storageNone
Battery
  • K40/Pro/Pro+/Poco F3: 4520 mAh
  • K40 Gaming: 5065 mAh
  • K40S/Poco F4: 4500 mAh
Rear camera
  • Wide:
    • K40/40S/Poco F3: 48 MP (f/1.8, 26 mm, 1/2", 0.8 μm)
    • K40 Pro: 64 MP (f/1.9, 26 mm, 1/1.7", 0.8 μm)
    • K40 Pro+: 108 MP (f/1.8, 26 mm, 1/1.52", 0.7 μm)
    • K40 Gaming: 64 MP (f/1.7, 26 mm, 1/2.0", 0.7 μm)
    • Poco F4: 64 MP (f/1.8, 26 mm, 0.7 μm)
  • Ultrawide:
    • K40/Pro/Pro+/40S/Poco F3/F4: 8 MP (f/2.2, 119°)
    • K40 Gaming: 8 MP (f/2.2, 120°)
  • Macro:
    • K40/Pro/Pro+/Poco F3: 5 MP (f/2.4, 50mm, 1/5", 1.12 μm)
    • K40 Gaming/40S/Poco F4: 2 MP (f/2.4)
  • K40/Poco F3: 4K@30fps, 1080p@30/60/120/240/960fps, PDAF, gyro-EIS
  • K40 Pro/Pro+: 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, PDAF, gyro-EIS, HDR10+
  • K40 Gaming: 4K@30fps, 1080p@30/60/120fps, 720p@960fps, PDAF, gyro-EIS
  • K40S/Poco F4: 4K@30fps, 1080p@30/60/120fps, 720p@960fps, PDAF, OIS, gyro-EIS
Front camera20 MP, (f/2.2, 27mm, 1/3.4", 0.8 μm)
HDR, 1080p@30fps, 720p@120fps
Display6.67 in (169 mm) AMOLED capacitive touchscreen, 1080p 1080 × 2400 pixels (2.5 MP), 20:9 aspect ratio (395 ppi), 120 Hz refresh rate, HDR10+
SoundStereo loudspeakers
ConnectivityWi-Fi 802.11a/b/g/n/6/6e (2.4 & 5GHz), dual-band, WiFi Direct, DLNA, hotspot Bluetooth V5.1/5.2, A2DP, Low-energy, aptX-HD, NFC, USB 2.0 Type-C, Infrared Blaster, GNSS (A-GPS, GLONASS, GALILEO, BDS, QZSS, NAVIC)
Data inputs
CodenameK40/Poco F3: alioth
Mi 11X: aliothin
K40 Pro: haydn
K40 Pro+/Mi 11i: haydn/haydnpro
Mi 11X Pro: haydnin
K40 Gaming/Poco F3 GT: ares
K40S/Poco F4: munch

The Redmi K40 is a line of Android-based smartphones manufactured by Xiaomi and marketed under its Redmi sub-brand. There are several models, the K40, K40 Pro, K40 Pro+, K40 Gaming and K40S. In the global market the Redmi K40 was launched as Poco F3 and the Redmi K40 Pro+ was launched as Xiaomi Mi 11i. In April 2021 the Redmi K40 and K40 Pro+ were released in India as Xiaomi Mi 11X and Mi 11X Pro. In July 2021 the Redmi K40 Gaming was released globally as Poco F3 GT. The Redmi K40S was released globally as Poco F4 but with improved specs.