Realme U1
#4031
Xiaomi Mi 4i
#4040Category Breakdown
Realme U1
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 Realme U1 features a larger 6.3-inch IPS LCD display with a resolution of 1080 x 2340 pixels, compared to the Xiaomi Mi 4i's 5.0-inch display at 1080 x 1920 pixels, providing a higher pixel density.
- In terms of performance, the U1 is powered by the Mediatek Helio P70 chipset, offering better processing capabilities than the Snapdragon 615 in the Mi 4i.
- Both phones have a 13 MP rear camera, but the U1 has a superior 25 MP front camera for selfies.
- The U1 also has a larger 3500 mAh battery compared to the Mi 4i's 3120 mAh, both supporting 10W charging.
- In terms of software, the U1 runs on Android 8.1 with ColorOS 6, while the Mi 4i operates on an older Android 5.0.2 with MIUI 8.2, indicating a more modern software experience on the U1.
- Build quality is comparable with both featuring Gorilla Glass on the front and plastic backs, but the U1 is slightly heavier at 168g versus the Mi 4i's 130g.
Side-by-side Specification Comparison
Realme U1
Xiaomi Mi 4i
General
Release Date
2018
2015
Announced
2018
2015
Description
Versions: RMX1831, RMX1833
N/A
Display
Size
6.3"
5"
Type
IPS LCD
IPS LCD
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
Corning Gorilla Glass 3
Corning scratch-resistant glass
Performance
Chipset
Mediatek MT6771 Helio P70 (12 nm)
Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU
Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU
Mali-G72 MP3
Adreno 405
Memory
32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM
16GB 2GB RAM, 32GB 2GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
No
Camera
Main Camera
13 MP
13 MP
Main Camera Details
13 MP, f/2.2, AF2 MP, f/2.4, (depth)
13 MP, f/2.0, AF
Front Camera
25 MP
5 MP
Front Camera Details
25 MP, f/2.0, 1/2.8", 0.9µm
5 MP, f/1.8
Video Recording
1080p@30fps, 720p@90fps
1080p@30fps, 480p@120fps
Selfie Video
1080p@30fps
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
3500 mAh
3120 mAh
Battery Details
Li-Ion 3500 mAh, non-removable
Li-Ion 3120 mAh, non-removable
Charging Details
10W wired
10W wired, QC1
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
157 x 74 x 8 mm (6.18 x 2.91 x 0.31 in)
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)
Weight
168 g
130 g
Materials
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front (Gorilla Glass), plastic back, plastic frame
Water Resistance
N/A
N/A
Colors
Ambitious Black, Brave Blue, Fiery Gold
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
4.2, A2DP, LE
4.1, A2DP
NFC
✗
✗
USB
microUSB 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS
GPS, GLONASS, BDS
Software
Operating System
Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), ColorOS 6
Android 5.0.2 (Lollipop), MIUI 8.2
OS Version
Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), ColorOS 6
Android 5.0.2 (Lollipop), MIUI 8.2
Security
Fingerprint
✓
✗
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
Accelerometer, gyro, proximity, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes