Realme U1
#3073
Xiaomi Mi 4i
#3766Category Breakdown
Realme U1
Xiaomi Mi 4i
Performance
70.857.3
Camera
44.535.1
Display
58.958.9
Battery
26.625.5
Build
71.888.9
Connectivity
52.453.6
Audio
8.98.9
Overall
44.038.7
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
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, f/2.2, AF2 MP, f/2.4, (depth)
13 MP, f/2.0, AF
Main Camera Features
LED flash, HDR, panorama
Dual-LED dual-tone flash, panorama, HDR
Front Camera
25 MP, f/2.0, 1/2.8", 0.9µm
5 MP, f/1.8
Front Camera Features
HDR
N/A
Video Recording
1080p@30fps, 720p@90fps
1080p@30fps, 480p@120fps
Selfie Video
1080p@30fps
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo 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 & Safety
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
Colors
Ambitious Black, Brave Blue, Fiery Gold
Dark Gray, Black, White, Yellow, Blue, Pink
Foldable
✗
✗
SAR
N/A
0.51 W/kg (head) 0.60 W/kg (body)
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
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 8.1 (Oreo), upgradable to Android 9.0 (Pie), ColorOS 6
Android 5.0.2 (Lollipop), MIUI 8.2
Fingerprint
✓
✗
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
Accelerometer, gyro, proximity, compass