Lenovo K9
#4012
Xiaomi Mi 4i
#4040Category Breakdown
Lenovo K9
Xiaomi Mi 4i
Performance
60.360.3
Camera
42.442.4
Display
70.570.5
Battery
43.543.5
Build
79.879.8
Overall
57.357.3
Summary
- The Lenovo K9 features a 5.7-inch IPS LCD display with a resolution of 720 x 1440 pixels, while the Xiaomi Mi 4i has a smaller 5.0-inch IPS LCD with a higher resolution of 1080 x 1920 pixels, resulting in a significantly sharper image.
- In terms of performance, the K9 is powered by a Mediatek Helio P22 chipset, whereas the Mi 4i uses a Qualcomm Snapdragon 615, which offers better multitasking capabilities.
- Both phones have a 13 MP rear camera, but the Mi 4i includes a more advanced autofocus system and a 5 MP selfie camera compared to the K9's lack of a front camera.
- The K9 has a 3000 mAh battery, slightly less than the Mi 4i's 3120 mAh, but both support 10W charging.
- Build quality favors the Mi 4i with Gorilla Glass on the front, while the K9 has a glass front but lacks this protection.
- Lastly, the K9 runs on Android 8.1 Oreo, providing a more recent software experience compared to the Mi 4i's Android 5.0.2 Lollipop with MIUI 8.2.
Side-by-side Specification Comparison
Lenovo K9
Xiaomi Mi 4i
General
Release Date
2018
2015
Announced
2018
2015
Description
N/A
N/A
Display
Size
5.7"
5"
Type
IPS LCD
IPS LCD
Resolution
720 x 1440 pixels, 18:9 ratio (~282 ppi density)
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
PPI
720
1080
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
N/A
Corning scratch-resistant glass
Performance
Chipset
Mediatek MT6762 Helio P22 (12 nm)
Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU
Octa-core 2.0 GHz Cortex-A53
Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU
PowerVR GE8320
Adreno 405
Memory
32GB 3GB RAM
16GB 2GB RAM, 32GB 2GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (uses shared SIM slot)
No
Camera
Main Camera
13 MP
13 MP
Main Camera Details
13 MP, f/2.2, 1/3.1", 1.12µm, PDAF5 MP, f/2.4, (depth)
13 MP, f/2.0, AF
Front Camera
N/A
5 MP
Front Camera Details
N/A
5 MP, f/1.8
Video Recording
1080p@30/60fps
1080p@30fps, 480p@120fps
Selfie Video
1080p@30/60fps
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
3000 mAh
3120 mAh
Battery Details
Li-Ion 3000 mAh, non-removable
Li-Ion 3120 mAh, non-removable
Charging Details
10W wired
10W wired, QC1
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
153.8 x 72.9 x 8 mm (6.06 x 2.87 x 0.31 in)
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)
Weight
155 g
130 g
Materials
Glass front, plastic back, plastic frame
Glass front (Gorilla Glass), plastic back, plastic frame
Water Resistance
N/A
N/A
Colors
Black, Blue
Dark Gray, Black, White, Yellow, Blue, Pink
Foldable
✗
✗
Connectivity
SIM
Nano-SIM + Nano-SIM
Dual SIM (Micro-SIM, dual stand-by)
Network
GSM / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps
HSPA, LTE Cat4 150/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth
4.1, A2DP, LE
4.1, A2DP
NFC
✗
✗
USB
USB Type-C 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GLONASS, BDS
Software
Operating System
Android 8.1 (Oreo)
Android 5.0.2 (Lollipop), MIUI 8.2
OS Version
Android 8.1 (Oreo)
Android 5.0.2 (Lollipop), MIUI 8.2
Security
Fingerprint
✓
✗
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, proximity
Accelerometer, gyro, proximity, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes