Category Breakdown
Nokia 6.1 Plus (Nokia X6)
vivo X21 UD
Performance
66.979.6
Camera
53.019.1
Display
58.982.8
Battery
25.225.7
Build
76.476.2
Connectivity
56.759.3
Audio
8.98.9
Overall
45.146.8
Summary
- The Nokia 6.1 Plus features a compact build with Gorilla Glass on both front and back, while the vivo X21 UD offers a slightly larger size with a similar glass front but an aluminum back.
- Display-wise, the Nokia has a 5.8-inch IPS LCD with a resolution of 1080 x 2280 pixels, whereas the vivo sports a 6.28-inch Super AMOLED display with the same resolution, providing richer colors.
- In terms of performance, the Nokia is powered by a Snapdragon 636 chipset, while the vivo uses a Snapdragon 660, with the latter having more RAM and storage options.
- Camera specifications show the Nokia with a 16 MP rear camera capable of 4K video, compared to the vivo's 12 MP rear camera limited to 1080p.
- Both devices have similar battery capacities, with the vivo slightly ahead at 3200 mAh, and both run Android 8.1, although the Nokia is part of the Android One program, ensuring a more streamlined software experience.
Side-by-side Specification Comparison
Nokia 6.1 Plus (Nokia X6)
vivo X21 UD
General
Release Date
2018, August 21
2018
Announced
2018, July 23
2018
Description
Versions: Nokia 6.1 Plus (Global); Nokia X6 (China)
N/A
Display
Size
5.8"
6.28"
Type
IPS LCD
Super AMOLED
Resolution
1080 x 2280 pixels, 19:9 ratio (~432 ppi density)
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Corning Gorilla Glass 3
Corning Gorilla Glass 3
Performance
Chipset
Qualcomm SDM636 Snapdragon 636 (14 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core (4x1.8 GHz Kryo 260 Gold & 4x1.6 GHz Kryo 260 Silver)
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Adreno 509
Adreno 512
Memory
32GB 4GB RAM, 64GB 4GB RAM, 64GB 6GB RAM
128GB 6GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (uses shared SIM slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
16 MP, f/2.0, 1.0µm, PDAF5 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
Dual-LED dual-tone flash, panorama, HDR
LED flash, HDR, panorama
Front Camera
16 MP, f/2.0, 1/3.06", 1.0µm
12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Front Camera Features
N/A
N/A
Video Recording
4K@30fps, 1080p@30fps (gyro-EIS)
1080p@30fps
Selfie Video
1080p@30fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3060 mAh
3200 mAh
Battery Details
Li-Ion 3060 mAh, non-removable
Li-Ion 3200 mAh, non-removable
Charging Details
18W wired, QC3
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
147.2 x 71 x 8 mm (5.80 x 2.80 x 0.31 in)
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight
151 g
156.2 g
Materials
Glass front (Gorilla Glass 3), glass back (Gorilla Glass 3), aluminum frame
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Colors
Black, Blue, White
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 Cat4 150/50 Mbps
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, 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
USB Type-C 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS
GPS, GLONASS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 8.1 (Oreo), upgradable to Android 10, Android One
Android 8.1 (Oreo), Funtouch 4
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (under display, optical), accelerometer, proximity, compass

