Category Breakdown
Oppo RX17 Neo
vivo X21 UD
Performance
77.979.6
Camera
28.419.1
Display
82.882.8
Battery
26.925.7
Build
67.976.2
Connectivity
51.259.3
Audio
8.98.9
Overall
46.846.8
Summary
- The Oppo RX17 Neo features a 6.41-inch Super AMOLED display with a resolution of 1080 x 2340 pixels, while the vivo X21 UD has a slightly smaller 6.28-inch Super AMOLED display at 1080 x 2280 pixels, both offering similar pixel densities.
- In terms of performance, both devices utilize the Qualcomm Snapdragon 660 chipset, but the X21 UD has a slightly faster CPU clock speed and more RAM at 6GB compared to the RX17 Neo's 4GB.
- The RX17 Neo's rear camera setup includes a 16 MP main sensor, while the X21 UD has a 12 MP main sensor but features a higher-resolution 5 MP depth sensor.
- Battery capacity is higher in the RX17 Neo at 3600 mAh compared to the X21 UD's 3200 mAh, although the latter supports faster charging at 18W.
- Both phones run Android 8.1, but the RX17 Neo uses ColorOS 5.2, while the X21 UD operates on Funtouch 4, offering different software experiences.
- Build quality differs as well, with the RX17 Neo having a glass front and plastic back, whereas the X21 UD features Gorilla Glass 3 on the front and an aluminum back and frame.
Side-by-side Specification Comparison
Oppo RX17 Neo
vivo X21 UD
General
Release Date
2018
2018
Announced
2018
2018
Description
N/A
N/A
Display
Size
6.41"
6.28"
Type
Super AMOLED
Super AMOLED
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~402 ppi density)
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
Corning Gorilla Glass 3
Performance
Chipset
Qualcomm SDM660 Snapdragon 660 (14 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Adreno 512
Adreno 512
Memory
128GB 4GB RAM
128GB 6GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
16 MP, f/1.8, 1/2.8", 1.12µm, PDAF2 MP, f/2.4, (depth)
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF5 MP, f/2.4, (depth)
Main Camera Features
LED flash, HDR, panorama
LED flash, HDR, panorama
Front Camera
25 MP, f/2.0, 1/2.8", 0.9µm
12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Front Camera Features
HDR
N/A
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
1080p@30fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3600 mAh
3200 mAh
Battery Details
Li-Ion 3600 mAh, non-removable
Li-Ion 3200 mAh, non-removable
Charging Details
10W wired
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
158.3 x 75.5 x 7.4 mm (6.23 x 2.97 x 0.29 in)
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight
156 g
156.2 g
Materials
Glass front, plastic back, plastic frame
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Colors
Mocha Red, Astral Blue
Black, Ruby Red
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / HSPA / LTE
GSM / CDMA / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat12 600/150 Mbps
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 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
Bluetooth
5.0, A2DP, LE
5.0, A2DP, LE
NFC
✗
✗
USB
microUSB 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GLONASS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 8.1 (Oreo), ColorOS 5.2
Android 8.1 (Oreo), Funtouch 4
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (under display, optical), accelerometer, proximity, compass
Fingerprint (under display, optical), accelerometer, proximity, compass

