Category Breakdown
OnePlus 7T
vivo V21
Performance
89.685.8
Camera
96.277.4
Display
87.884.2
Battery
27.128.1
Build
80.565.8
Connectivity
73.753.5
Audio
87.68.9
Overall
69.260.1
Summary
- The OnePlus 7T features a more premium build with Gorilla Glass 5 on both front and back, while the vivo V21 uses plastic for its back and frame, resulting in a lighter device.
- Both smartphones have a 90Hz AMOLED display, but the V21 has a slightly smaller 6.44-inch screen with a higher pixel density of ~409 ppi compared to the 7T's 6.55-inch display at ~402 ppi.
- In terms of performance, the OnePlus 7T is powered by the Snapdragon 855+, offering superior processing capabilities over the Mediatek Dimensity 800U in the V21.
- The camera setup on the V21 boasts a higher resolution rear camera at 64 MP and a 44 MP selfie camera, compared to the 7T's 48 MP rear and 16 MP front cameras.
- The V21 also has a slightly larger 4000 mAh battery with faster 33W charging, while the 7T has a 3800 mAh battery with 30W charging.
- Software-wise, the OnePlus 7T runs on OxygenOS based on Android 10, upgradable to Android 12, while the V21 operates on Android 11 with Funtouch OS.
Side-by-side Specification Comparison
OnePlus 7T
vivo V21
General
Release Date
2019, September 26
2021, April 27
Announced
2019, September 26
2021, April 27
Description
N/A
Not to be confused with vivo V21 5G
Display
Size
6.55"
6.44"
Type
Fluid AMOLED, 90Hz, HDR10+
AMOLED, 90Hz, HDR10+, 500 nits (typ)
Resolution
1080 x 2400 pixels, 20:9 ratio (~402 ppi density)
1080 x 2400 pixels, 20:9 ratio (~409 ppi density)
PPI
1080
1080
Refresh Rate
90Hz
90Hz
HDR Support
✓
✓
Protection
Corning Gorilla Glass 5
N/A
Performance
Chipset
Qualcomm SM8150 Snapdragon 855+ (7 nm)
Mediatek Dimensity 800U (7 nm)
CPU
Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
Adreno 640 (700 MHz)
Mali-G57 MC3
Memory
128GB 8GB RAM, 256GB 8GB RAM
128GB 8GB RAM, 256GB 8GB RAM
Expandable Storage
✗
✗
Card Slot
No
microSDXC (uses shared SIM slot)
Camera
Main Camera
48 MP, f/1.6, 26mm (wide), 1/2.0", 0.8µm, PDAF, OIS12 MP, f/2.2, 51mm (telephoto), 1.0µm, PDAF, 2x optical zoom16 MP, f/2.2, 17mm (ultrawide), AF
64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF, OIS8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm2 MP, f/2.4, (macro)
Main Camera Features
Dual-LED flash, HDR, panorama
LED flash, HDR, panorama
Front Camera
16 MP, f/2.0, 25mm (wide), 1/3.06", 1.0µm
44 MP, f/2.0, (wide), AF, OIS
Front Camera Features
HDR
Dual-LED flash, HDR
Video Recording
4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, Auto HDR, gyro-EIS
4K@30fps (no OIS), 1080p@30/60fps
Selfie Video
1080p@30fps, gyro-EIS
4K@30fps (no OIS), 1080p@30fps
Optical Stabilization
✓
✓
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3800 mAh
4000 mAh
Battery Details
Li-Po 3800 mAh, non-removable
4000 mAh
Charging Details
30W wired
33W wired, 63% in 30 min
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
160.9 x 74.4 x 8.1 mm (6.33 x 2.93 x 0.32 in)
159.7 x 73.9 x 7.3 mm (6.29 x 2.91 x 0.29 in)
Weight
190 g
176 g
Materials
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Glass front, plastic frame, plastic back
Colors
Frosted Silver, Glacier Blue, White
Dusk Blue, Sunset Dazzle
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / CDMA / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 Mbps
HSPA, LTE
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE, aptX HD
5.1, A2DP, LE
NFC
✓
✗
USB
USB Type-C 3.1, OTG
USB Type-C 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✗
✗
Radio
✗
✗
Positioning
GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
GPS, GLONASS, GALILEO, BDS
Audio
Stereo Speakers
✓
✗
Loudspeaker
Yes, with stereo speakers
Yes
Audio Jack
No
No
Software & Security
Operating System
Android 10, upgradable to Android 12, OxygenOS 12.1
Android 11, Funtouch 11.1
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (under display, optical), accelerometer, gyro, compass
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

