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Brand | asus | realme | |
Model | asus zenfone ar zs571kl | realme c21y | |
Announced | 2017 January | 2021 June 21 | |
Status | Available. Released 2017 June | Available. Released 2021 July 02 | |
Device Body | glass front | plastic back | plastic frame | ||
Dimensions | 158.7 x 77.7 x 9 mm ( 6.25 x 3.06 x 0.35 in ) | 164.5 x 76 x 9.1 mm ( 6.48 x 2.99 x 0.36 in ) | |
Weight in gram | 170 | 200 | |
SIM card | Hybrid dual SIM ( Nano-SIM | dual stand-by ) | dual SIM ( Nano-SIM | dual stand-by ) | |
Water Resistance | No | ||
Display type | Super AMOLED capacitive touchscreen | 16millioncolors | IPS LCD | 400 Luminance units ( typ ) | |
Display resolution | 1440 x 2560 pixels | 16 : 9 ratio ( ~515 pixel per inch density ) | 720 x 1600 pixels | 20 : 9 ratio ( ~270 pixel per inch density ) | |
Display size | 5.7 inches | 89.6 cm2 ( ~72.6% screen to body ratio ) | 6.5 inches | 102.0 cm2 ( ~81.6% screen to body ratio ) | |
Display Protection | |||
Operating System | android 7 ( nougat ) | zenui 3 | android 10/ android 11 | |
CPU | Quad-core ( 2x2.35 GHz kryo & 2x1.6 GHz kryo ) | Octa-core ( 2x1.8 GHz cortex-a75 & 6x1.8 GHz cortex-a55 ) | |
Chipset | Qualcomm msm8996 snapdragon 821 ( 14 nm ) | unisoc t610 ( 12 nm ) | |
GPU | adreno 530 | mali-g52 mp2 | |
Memory card | microsdxc ( uses shared sim slot ) | microsdxc ( dedicated slot ) | |
Memory v1 | 64gb 6gb RAM | 32gb 3gb RAM | |
Memory v2 | 128gb 6gb RAM | 256gb 8gb RAM | 64gb 4gb RAM | |
Primary camera | 23 megapixel| lens aperture2.0 | 1/2.6" | 1.0µm | phase detection autofocus | 4-axis OIS | depth & motion tracking sensors | 13 megapixel| lens aperture2.2 | 26mm ( wide ) | 1/3.06" | 1.12µm | phase detection autofocus 2 megapixel| lens aperture2.4 | ( macro ) -- | |
Secondary camera | 8 megapixel| lens aperture2.0 | 5 megapixel| lens aperture2.2 | ( wide ) | 1/5.0" | 1.12µm | |
Loud speaker | Yes | Yes | |
Audio jack | Yes | Yes | |
WLAN | Wi-Fi 802.11 a/b/g/n/ac | dual-band | Wi-Fi Direct | hotspot | Wi-Fi 802.11 b/g/n | hotspot | |
Bluetooth | 4.2 | a2dp | le | 5.0 | a2dp | le | |
GPS | Yes with a-gps glonass bds | ||
NFC | No | ||
Radio | FM Radio | unspecified | |
USB | 2.0 | Type-C 1.0.0 reversible connector | USB on-the-go | microusb 2.0 | USB on-the-go | |
Sensors | fingerprint ( front-mounted ) | accelerometer | gyroscope | proximity | compass | barometer | fingerprint ( rear-mounted ) | accelerometer | proximity | compass | |
Battery | Non-removable Li-lon 3300 mAh battery | li-po 5000 mAh | Non-removable | |
Battery Charge | reverse wired | ||
Colors | black | black color gradations, blue color gradations | |
Network technology | gsm / hspa / lte | gsm / hspa / lte | |
5G bands | |||
Network speed | hspa 42.2/5.76 mbps lte-a (3ca) cat12 600/75 mbps | hspa lte | |
GPRS | |||
EDGE | |||
Approx price |
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310 GBP
373 EUR
3660 NOK
3900 SEK
23600 RUB
380 USD
1990 BRL
550 AUD
500000 KRW
51000 JPY
520 SGD
1680 MYR
1380 AED
6400 ZAR
