Phone Comparison - Realme C21 vs Oppo A77 vs Oppo Reno8

Price Comparison (India) -

general General Info

Manufacturer realme Oppo Oppo
Announced 2021, March 05 June 2022 July 2022
Status Available. Released 2021, March 05 Coming Soon - June 2022 Coming Soon - July 2022
Price Rs. 8,999 ($0.00) [Similarly Priced] - Rs. 29,999 ($0.00) [Similarly Priced]
Colors Cross Black, Cross Blue Ocean Blue, Midnight Black Shimmer Gold, Shimmer Black
Form Factor Candybar Candybar Candybar
Dimension 165.2 x 76.4 x 8.9 mm
(6.5 x 3.01 x 0.35 in)
163.8 x 75.1 x 8 mm
(6.45 x 2.96 x 0.31 in)
160.6 x 73.4 x 7.7 mm
(6.32 x 2.89 x 0.3 in)
Weight 190 g (6.7 oz) 190 g (6.7 oz) 179 g (6.31 oz)
SIM Type Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 66 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41
5G Network - 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA
Messaging
Build Features - Fingerprint Sensor (rear-mounted)
- Fingerprint Sensor (side-mounted)
IPX4 water resistant
- Fingerprint Sensor (under display, optical)

hardware Hardware and OS

OS Android 10 Android 12 Android 12
User Interface Realme UI 1.0 ColorOS 12.1 ColorOS 12.1
Processor Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), MediaTek Helio G35 (12 nm) Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), MediaTek MT6833P Dimensity 810 (6 nm) Octa-core (1x3.0 GHz Cortex-A78 & 3x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55), MediaTek Dimensity 1300 (6 nm)
GPU PowerVR GE8320 Mali-G57 MC2 Mali-G77 MC9
RAM 4 GB 6 GB 8 GB
Internal Memory 64 GB 128 GB 256 GB
External Memory microSDXC (dedicated slot) microSDXC No

display Display

Type HD+ IPS LCD Screen HD+ IPS LCD Screen
90Hz Refresh Rate
480 nits (typ), 600 nits (HBM)
FHD+ AMOLED Screen
90Hz Refresh Rate
430 nits (typ), 600 nits (HBM), 800 nits (peak)
Corning Gorilla Glass 5
Colors 16M Colour 16M Colors 16M Colors
Size 6.5 inches 6.56 inches 6.4 inches
Resolution 720 x 1600 pixels (270 ppi) 720 x 1612 pixels (269 ppi) 1080 x 2400 pixels (411 ppi)
Screen-to-Body Ratio 80.78% 84.12% 83.98%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes no
Radio FM radio No No
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes

camera Camera

Rear Camera 13 MP + 2 MP + 2 MP 48 MP + 2 MP 50 MP + 8 MP + 2 MP
Flash LED Flash LED Flash Dual-LED Flash
Features 13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF
2 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)
HDR, panorama
48 MP, f/1.7, 26mm (wide), PDAF
2 MP, f/2.4, (depth)
HDR, Panorama
50 MP, f/1.8, 23mm (wide), 1/1.56", 1.0µm, multi-directional PDAF
8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro)
HDR, Panorama
Video 1080p@30fps 1080p@30fps 4K@30fps, 1080p@30/60/120fps, gyro-EIS
Front Camera 5 MP, f/2.2, (wide), 1/5.0", 1.12µm
HDR
1080p@30fps [Similar]
8 MP, f/2.0, 26mm (wide)
Panorama
1080p@30fps [Similar]
32 MP, f/2.4, 23mm (wide), 1/2.74", 0.8µm
Panorama, HDR
1080p@30fps, gyro-EIS [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE HSPA 42.2/5.76 Mbps, LTE, 5G HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G
Bluetooth 5.1, A2DP, LE 5.3, A2DP, LE, aptX HD 5.3, A2DP, LE, aptX HD
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot
USB microUSB 2.0, USB On-The-Go USB Type-C 2.0, USB On-The-Go USB Type-C 2.0, USB On-The-Go
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS
Browser Yes Yes Yes

memory User Memory

Internal 64 GB, 4 GB RAM or 32 GB, 3 GB RAM eMMC 5.1 128 GB, 6 GB RAM UFS 2.2 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1
Expandable Storage microSDXC (dedicated slot) microSDXC No
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
Gyroscope Sensor gyroscope sensor not present gyroscope sensor not present gyroscope sensor present
NFC NFC not supported NFC supported NFC supported

battery Battery

Type Non-removable Li-Po Battery
Battery Charging 10W
Non-removable Li-Po Battery
Fast battery Charging 33W, 53% in 30 min (advertised)
Non-removable Li-Po Battery
Fast charging 80W, 1-50% in 11 min, 1-100% in 28 min (advertised)
Reverse charging
Capacity 5000 mAh 5000 mAh 4500 mAh
Stand by - - -
Talk Time - - -