Compare Devices
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Brand | oppo | oppo | vivo |
Model | oppo a3s | oppo a1k | vivo v21 5g |
Announced | 2018 July 13 | 2019 April | 2021 April 27 |
Status | Available. Released 2018 July | Available. Released 2019 May | Available. Released 2021 May 06 |
Device Body | glass front ( gorilla glass 3 ) | plastic back | plastic frame | glass front | plastic frame | plastic back | |
Dimensions | 156.2 x 75.6 x 8.2 mm ( 6.15 x 2.98 x 0.32 in ) | 154.5 x 73.8 x 8.4 mm ( 6.08 x 2.91 x 0.33 in ) | 159.7 x 73.9 x 7.3 mm ( 6.29 x 2.91 x 0.29 in ) |
Weight in gram | 168 | 170 | 176 |
SIM card | dual SIM ( Nano-SIM | dual stand-by ) | dual SIM ( Nano-SIM | dual stand-by ) | Hybrid dual SIM ( Nano-SIM | dual stand-by ) |
Water Resistance | No | No | |
Display type | IPS LCD | IPS LCD | AMOLED | 90hz | hdr10+ | 500 Luminance units ( typ ) |
Display resolution | 720 x 1520 pixels | 19 : 9 ratio ( ~271 pixel per inch density ) | 720 x 1560 pixels | 19.5 : 9 ratio ( ~282 pixel per inch density ) | 1080 x 2400 pixels | 20 : 9 ratio ( ~409 pixel per inch density ) |
Display size | 6.2 inches | 95.9 cm2 ( ~81.2% screen to body ratio ) | 6.1 inches | 91.3 cm2 ( ~80.1% screen to body ratio ) | 6.44 inches | 100.1 cm2 ( ~84.8% screen to body ratio ) |
Display Protection | corning gorilla glass 3 | ||
Operating System | android 8.1 ( oreo ) | coloros 5.1 | android 9.0 ( pie ) | coloros 6 | android 11 | funtouch 11.1 |
CPU | Octa-core 1.8 GHz cortex-a53 | Octa-core 2.0 GHz cortex-a53 | Octa-core ( 2x2.4 GHz cortex-a76 & 6x2.0 GHz cortex-a55 ) |
Chipset | Qualcomm sdm450 snapdragon 450 ( 14 nm ) | mediatek mt6762 helio p22 ( 12 nm ) | mediatek mt6853 dimensity 800u ( 7 nm ) |
GPU | adreno 506 | powervr ge8320 | mali-g57 mc3 |
Memory card | microsdxc ( dedicated slot ) | microsdxc ( uses shared sim slot ) | |
Memory v1 | 16gb 2gb RAM | 32gb 2gb RAM | 128gb 8gb RAM |
Memory v2 | 32gb 3gb RAM | 64gb 4gb RAM | 256gb 8gb RAM | |
Primary camera | 13 megapixel| lens aperture2.2 | Auto focus 2 megapixel| lens aperture2.4 | ( depth ) | 8 megapixel| lens aperture2.2 | 1/3.2" | 1.4µm | Auto focus | 64 megapixel| lens aperture1.8 | 26mm ( wide ) | 1/1.72" | 0.8µm | phase detection autofocus | OIS 8 megapixel| lens aperture2.2 | 120˚ | 16mm ( ultrawide ) | 1/4.0" | 1.12µm 2 megapixel| lens aperture2.4 | ( macro ) |
Secondary camera | 8 megapixel| lens aperture2.2 | 5 megapixel| lens aperture2.0 | 1/5" | 1.12µm | 44 megapixel| lens aperture2.0 | ( wide ) | Auto focus | OIS |
Loud speaker | Yes | Yes | Yes |
Audio jack | Yes | Yes | No |
WLAN | Wi-Fi 802.11 b/g/n | Wi-Fi Direct | hotspot | Wi-Fi 802.11 b/g/n | hotspot | Wi-Fi 802.11 a/b/g/n/ac | dual-band | Wi-Fi Direct |
Bluetooth | 4.2 | a2dp | le | 4.2 | a2dp | le | 5.1.0 | a2dp | le |
GPS | Yes with a-gps | Yes with a-gps glonass bds | |
NFC | No | No | Yes ( market/region dependent ) |
Radio | FM Radio | FM Radio | No |
USB | microusb 2.0 | USB on-the-go | microusb 2.0 | USB on-the-go | USB Type-C 2.0 | USB on-the-go |
Sensors | accelerometer | gyroscope | proximity | compass | accelerometer | proximity | compass | fingerprint ( under display | optical ) | accelerometer | gyroscope | proximity | compass |
Battery | Li-lon 4230 mAh | Non-removable | li-po 4000 mAh | Non-removable | li-po 4000 mAh | Non-removable |
Battery Charge | 33w wired | 63% in 30 min ( advertised ) | ||
Colors | red, purple color gradations | black, red | blue color gradations, sunset color color gradations, white color gradations |
Network technology | gsm / hspa / lte | gsm / hspa / lte | gsm / hspa / lte / 5g |
5G bands | 78 sub6 - india | ||
Network speed | hspa 42.2/5.76 mbps lte-a (2ca) cat6 300/50 mbps | hspa 42.2/5.76 mbps lte-a | hspa lte-a 5g |
GPRS | |||
EDGE | |||
Approx price |
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110 GBP
133 EUR
1200 NOK
1300 SEK
7800 RUB
130 USD
650 BRL
180 AUD
170000 KRW
17000 JPY
170 SGD
550 MYR
460 AED
2100 ZAR
