Compare Galaxy A21 with 4149 devices. You can see which you should buy through this compiled table

Color:Titan Silver, Dimensions (width x height x thickness):2.7 inches (68 mm) x 5.4 inches (136 mm) x 0.5 inches (11.5 mm), Weight:138 oz (138 g), Display type:Super AMOLED ( EL), Screen resolution (width x height):720 x 1280, Pixel density:312 ppi, Display size:4.7 inch, OS:Android, Chipset:OMAP4460, CPU specs:1.5GHz×2(Dual core), RAM size:1GB, Storage size:16GB, Battery capacity:1750 mAh, Rear-camera resolution:5.1 MP, Front-camera resolution:0 MP

Dimensions (width x height x thickness):2.8 inches (72.1 mm) x 5.7 inches (144.2 mm) x 0.4 inches (9.0 mm), Weight:148 oz (148 g), Display type:IPS, Screen resolution (width x height):720 x 1280, Pixel density:293 ppi, Display size:5 inch, OS:Windows, Chipset:Snapdragon 210 MSM8909, CPU specs:1.1GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2500 mAh, Rear-camera resolution:8 MP, Front-camera resolution:2 MP

Color:/, Dimensions (width x height x thickness):2.8 inches (70.9 mm) x 5.7 inches (143.6 mm) x 0.3 inches (7.7 mm), Weight:174 oz (174 g), Display type:True Tone HDR Super Retina HD, Screen resolution (width x height):1125 x 2436, Pixel density:462 ppi, Display size:5.8 inch, OS:IOS, Chipset:Apple A11, CPU specs:2.39GHz+2.39GHz×6(Hexacore), RAM size:3GB, Storage size:64GB, Battery capacity:2716 mAh, Rear-camera resolution:12 MP, Front-camera resolution:7 MP

Dimensions (width x height x thickness):2.9 inches (73.9 mm) x 6.2 inches (156.6 mm) x 0.4 inches (9.7 mm), Weight:188 oz (188 g), Display type:LCD 6, Screen resolution (width x height):1440 x 2880, Pixel density:536 ppi, Display size:6 inch, OS:Android, Chipset:Snapdragon 845 SDM845, CPU specs:2.8GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3500 mAh, Rear-camera resolution:16 MP, Front-camera resolution:8 MP

Color:Black, Dimensions (width x height x thickness):2.9 inches (74.4 mm) x 5.7 inches (146 mm) x 0.5 inches (12.6 mm), Weight:200 oz (200 g), Display type:TFT, Screen resolution (width x height):720 x 1280, Pixel density:312 ppi, Display size:4.7 inch, OS:Android, Chipset:Qualcomm MSM8909 Snapdragon 210, CPU specs:1.3GHz×4(Quad core), RAM size:2GB, Storage size:16GB, Battery capacity:4000 mAh, Rear-camera resolution:8 MP, Front-camera resolution:2 MP

Color:Black, Dimensions (width x height x thickness):3.0 inches (75.2 mm) x 5.9 inches (148.6 mm) x 0.3 inches (7.9 mm), Weight:140 oz (140 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1280, Pixel density:277 ppi, Display size:5.3 inch, OS:Android, Chipset:Qualcomm MSM8917 Snapdragon 425, CPU specs:1.4GHz×4(Quad core), RAM size:2GB, Storage size:32GB, Battery capacity:2700 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:Fine Gold/Venom Black, Dimensions (width x height x thickness):2.9 inches (73.7 mm) x 5.8 inches (147.9 mm) x 0.4 inches (9 mm), Weight:165 oz (165 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 1920, Pixel density:423 ppi, Display size:5.2 inch, OS:Android, Chipset:Mediatek MT6757 Helio P25, CPU specs:2.5GHz+1.4GHz×8(OctaCore), RAM size:4GB, Storage size:32GB, Battery capacity:4000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Iron Gray/Fine Gold, Dimensions (width x height x thickness):3.1 inches (77.5 mm) x 6.1 inches (155 mm) x 0.4 inches (9.6 mm), Weight:181 oz (181 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1280, Pixel density:267 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8920 Snapdragon 427, CPU specs:1.4GHz×4(Quad core), RAM size:2GB, Storage size:32GB, Battery capacity:5000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:Black/orchid grey/gold/blue, Dimensions (width x height x thickness):3.0 inches (75.7 mm) x 6.3 inches (159.9 mm) x 0.3 inches (8.3 mm), Weight:191 oz (191 g), Display type:Super AMOLED, Screen resolution (width x height):1080 x 2220, Pixel density:411 ppi, Display size:6 inch, OS:Android, Chipset:Exynos 7885, CPU specs:2.2GHz+1.6GHz×8(OctaCore), RAM size:6GB, Storage size:64GB, Battery capacity:3500 mAh, Rear-camera resolution:16 MP, Front-camera resolution:16 MP

Color:Gunmetal Gray, Dimensions (width x height x thickness):2.8 inches (70.6 mm) x 5.8 inches (146.4 mm) x 0.4 inches (9.4 mm), Weight:160 oz (160 g), Display type:Super LCD3, Screen resolution (width x height):1080 x 1920, Pixel density:440 ppi, Display size:5 inch, OS:Windows, Chipset:Qualcomm MSM8974AB Snapdragon 801, CPU specs:2.3GHz×4(Quad core), RAM size:2GB, Storage size:32GB, Battery capacity:2600 mAh, Rear-camera resolution:4 MP, Front-camera resolution:5 MP

Color:White/Black, Dimensions (width x height x thickness):2.8 inches (70.7 mm) x 5.6 inches (141.5 mm) x 0.4 inches (11 mm), Weight:149 oz (149 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1280, Pixel density:293 ppi, Display size:5 inch, OS:Android, Chipset:Qualcomm MSM8226 Snapdragon 400, CPU specs:1.2GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2070 mAh, Rear-camera resolution:8 MP, Front-camera resolution:2 MP

Color:Angelic White/Mystic Blue, Dimensions (width x height x thickness):2.6 inches (67.3 mm) x 5.8 inches (146.3 mm) x 0.4 inches (9.7 mm), Weight:138 oz (138 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1280, Pixel density:312 ppi, Display size:4.7 inch, OS:Android, Chipset:Mediatek MT6592, CPU specs:1.7GHz×8(OctaCore), RAM size:2GB, Storage size:16GB, Battery capacity:2300 mAh, Rear-camera resolution:13 MP, Front-camera resolution:13 MP

Color:Black/white, Dimensions (width x height x thickness):2.8 inches (70.4 mm) x 5.6 inches (142.3 mm) x 0.2 inches (6.3 mm), Weight:140 oz (140 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1280, Pixel density:293 ppi, Display size:5 inch, OS:Android, Chipset:Qualcomm Snapdragon 400, CPU specs:1.6GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2410 mAh, Rear-camera resolution:8 MP, Front-camera resolution:5 MP

Color:Ocean Blue/Charcoal Black, Dimensions (width x height x thickness):3.0 inches (75.6 mm) x 6.1 inches (155.6 mm) x 0.3 inches (7.7 mm), Weight:163 oz (163 g), Display type:PLS TFT, Screen resolution (width x height):720 x 1520, Pixel density:270 ppi, Display size:6.22 inch, OS:Android, Chipset:Exynos 7870 Octa, CPU specs:1.6GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:3400 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:Red/Green, Dimensions (width x height x thickness):2.9 inches (74.3 mm) x 6.2 inches (156.6 mm) x 0.3 inches (7.9 mm), Weight:164 oz (164 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 2340, Pixel density:409 ppi, Display size:6.3 inch, OS:Android, Chipset:Qualcomm SDM710 Snapdragon 710, CPU specs:2.2GHz+1.7GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:4050 mAh, Rear-camera resolution:16 MP, Front-camera resolution:16 MP

Color:Night Blue/Blush Gold/Electro Bleen, Dimensions (width x height x thickness):3.0 inches (76.5 mm) x 6.3 inches (159 mm) x 0.3 inches (8.2 mm), Weight:178 oz (178 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1520, Pixel density:268 ppi, Display size:6.26 inch, OS:Android, Chipset:Mediatek MT6762WB Helio P22, CPU specs:2.0GHz×8(OctaCore), RAM size:3GB, Storage size:64GB, Battery capacity:4000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Anthracite Black/Metallic Blue/Metallic Gold/Metallic Rose, Dimensions (width x height x thickness):2.8 inches (72.2 mm) x 5.9 inches (149.1 mm) x 0.4 inches (8.9 mm), Weight:153.2 oz (153.2 g), Display type:IPS LCD, Screen resolution (width x height):480 x 960, Pixel density:195 ppi, Display size:5.5 inch, OS:Android, Chipset:Unisoc SC9863A, CPU specs:1.6GHz+1.2GHz×8(OctaCore), RAM size:3GB, Storage size:16GB, Battery capacity:2460 mAh, Rear-camera resolution:8 MP, Front-camera resolution:5 MP

Color:Pearl White/Aurora Blue/Onyx Grey, Dimensions (width x height x thickness):2.9 inches (74.5 mm) x 6.2 inches (156.8 mm) x 0.3 inches (8.7 mm), Weight:179 oz (179 g), Display type:Super AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:403 ppi, Display size:6.39 inch, OS:Android, Chipset:Qualcomm SDM710 Snapdragon 710, CPU specs:2.2GHz+1.7GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:4030 mAh, Rear-camera resolution:48 MP, Front-camera resolution:32 MP

Color:Stone Blue/Piano Black, Dimensions (width x height x thickness):2.9 inches (74.7 mm) x 6.2 inches (158.4 mm) x 0.3 inches (7.8 mm), Weight:169 oz (169 g), Display type:Super AMOLED, Screen resolution (width x height):720 x 1560, Pixel density:268 ppi, Display size:6.4 inch, OS:Android, Chipset:Exynos 7884B, CPU specs:1.6GHz+1.35GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:4000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Orange/Blue/Green, Dimensions (width x height x thickness):3.1 inches (78.2 mm) x 6.3 inches (159.6 mm) x 0.3 inches (8.3 mm), Weight:183 oz (183 g), Display type:Super AMOLED, Screen resolution (width x height):1080 x 2232, Pixel density:381 ppi, Display size:6.5 inch, OS:Android, Chipset:Qualcomm SM8150 Snapdragon 855, CPU specs:2.84GHz+2.42GHz+1.78GHz×8(OctaCore), RAM size:8GB, Storage size:256GB, Battery capacity:4500 mAh, Rear-camera resolution:12 MP, Front-camera resolution:16 MP

Color:Aurora Green/Glacier White/Midnight Black, Dimensions (width x height x thickness):2.9 inches (74.2 mm) x 6.2 inches (157.8 mm) x 0.4 inches (9.7 mm), Weight:208 oz (208 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:398 ppi, Display size:6.47 inch, OS:Android, Chipset:Qualcomm SDM730 Snapdragon 730G, CPU specs:2.2GHz+1.8GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:5260 mAh, Rear-camera resolution:108 MP, Front-camera resolution:32 MP

Color:Ice Jadeite/Opal White, Dimensions (width x height x thickness):3.1 inches (77.7 mm) x 6.4 inches (163.3 mm) x 0.4 inches (9.1 mm), Weight:203 oz (203 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 2340, Pixel density:390 ppi, Display size:6.6 inch, OS:Android, Chipset:Mediatek MT6765 Helio P35, CPU specs:2.35GHz+1.8GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:4000 mAh, Rear-camera resolution:48 MP, Front-camera resolution:32 MP

Color:Admiral Blue/Crystal White, Dimensions (width x height x thickness):2.9 inches (74.2 mm) x 6.3 inches (159 mm) x 0.3 inches (8.5 mm), Weight:176 oz (176 g), Display type:Super AMOLED, Screen resolution (width x height):1080 x 2400, Pixel density:408 ppi, Display size:6.44 inch, OS:Android, Chipset:Qualcomm SDM675 Snapdragon 675, CPU specs:2.0GHz+1.7GHz×8(OctaCore), RAM size:8GB, Storage size:256GB, Battery capacity:4500 mAh, Rear-camera resolution:48 MP, Front-camera resolution:32 MP

Color:White/Black, Dimensions (width x height x thickness):2.9 inches (73.3 mm) x 6.3 inches (159.6 mm) x 0.4 inches (8.9 mm), Weight:198 oz (198 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2376, Pixel density:397 ppi, Display size:6.56 inch, OS:Android, Chipset:Qualcomm SM8250 Snapdragon 865, CPU specs:2.84GHz+2.42GHz+1.8GHz×8(OctaCore), RAM size:12GB, Storage size:256GB, Battery capacity:4000 mAh, Rear-camera resolution:50 MP, Front-camera resolution:16 MP