Compare vivo Y51 with 4149 devices. You can see which you should buy through this compiled table

Color:/, Dimensions (width x height x thickness):2.6 inches (67 mm) x 5.4 inches (138 mm) x 0.4 inches (10.9 mm), Weight:153 oz (153 g), Display type:EL, Screen resolution (width x height):720 x 1280, Pixel density:326 ppi, Display size:4.5 inch, OS:Android, Chipset:Qualcomm Snapdragon 400 MSM8926, CPU specs:1.2GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2500 mAh, Rear-camera resolution:8 MP, Front-camera resolution:1.3 MP

Color:Black|Brown, Dimensions (width x height x thickness):2.8 inches (71.2 mm) x 5.6 inches (143.2 mm) x 0.3 inches (8.4 mm), Weight:141 oz (141 g), Display type:IPS, Screen resolution (width x height):1080 x 1920, Pixel density:440 ppi, Display size:5 inch, OS:Android, Chipset:MediaTek 6735P, CPU specs:1.0GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2500 mAh, Rear-camera resolution:8 MP, Front-camera resolution:5 MP

Color:Midnight Black/Titanium Gray, Dimensions (width x height x thickness):2.9 inches (74 mm) x 6.2 inches (158 mm) x 0.4 inches (8.9 mm), Weight:187 oz (187 g), Display type:Super AMOLED, Screen resolution (width x height):1440 x 2960, Pixel density:530 ppi, Display size:6.2 inch, OS:Android, Chipset:Snapdragon 845 SDM845, CPU specs:2.8GHz×8(OctaCore), RAM size:6GB, Storage size:64GB, Battery capacity:3500 mAh, Rear-camera resolution:12.2 MP, Front-camera resolution:8 MP

Color:Brilliant Black/Cosmetic Pink/Ice White/Sapphire Blue, Dimensions (width x height x thickness):3.1 inches (79.8 mm) x 6.4 inches (162.4 mm) x 0.3 inches (8 mm), Weight:170 oz (170 g), Display type:Super LCD5, Screen resolution (width x height):1440 x 2560, Pixel density:515 ppi, Display size:5.7 inch, OS:Android, Chipset:Qualcomm MSM8996 Snapdragon 821, CPU specs:2.15GHz+1.6GHz×4(Quad core), RAM size:4GB, Storage size:128GB, Battery capacity:3000 mAh, Rear-camera resolution:12 MP, Front-camera resolution:16 MP

Color:White, Dimensions (width x height x thickness):2.5 inches (64 mm) x 4.9 inches (124 mm) x 0.4 inches (10.3 mm), Weight:129 oz (129 g), Screen resolution (width x height):480 x 800, Pixel density:233 ppi, Display size:4 inch, OS:Android, CPU specs:1.2GHz×4(Quad core), RAM size:1GB, Storage size:4GB, Battery capacity:1500 mAh, Rear-camera resolution:5 MP

Color:Black/orchid grey/gold/blue, Dimensions (width x height x thickness):2.8 inches (70.6 mm) x 5.9 inches (149.2 mm) x 0.3 inches (8.4 mm), Weight:172 oz (172 g), Display type:Super AMOLED, Screen resolution (width x height):1080 x 2220, Pixel density:440 ppi, Display size:5.6 inch, OS:Android, Chipset:Exynos 7885, CPU specs:2.2GHz+1.6GHz×8(OctaCore), RAM size:4GB, Storage size:64GB, Battery capacity:3000 mAh, Rear-camera resolution:16 MP, Front-camera resolution:16 MP

Color:Black, Dimensions (width x height x thickness):3.1 inches (79.5 mm) x 6.0 inches (152 mm) x 0.7 inches (18 mm), Weight:335 oz (335 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 1920, Pixel density:440 ppi, Display size:5 inch, OS:Android, Chipset:Qualcomm SDM630 Snapdragon 630, CPU specs:2.2GHz×8(OctaCore), RAM size:4GB, Storage size:64GB, Battery capacity:4900 mAh, Rear-camera resolution:12 MP, Front-camera resolution:8 MP

Color:Chrome/Black/Gold/Pink, Dimensions (width x height x thickness):3.0 inches (75.8 mm) x 6.1 inches (154.4 mm) x 0.3 inches (7.8 mm), Weight:180 oz (180 g), Display type:IPS LCD, Screen resolution (width x height):2160 x 3840, Pixel density:801 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8994 Snapdragon 810, CPU specs:2.0GHz+1.5GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:3430 mAh, Rear-camera resolution:23 MP, Front-camera resolution:1 MP

Color:Slate Blue, Dimensions (width x height x thickness):2.8 inches (72.1 mm) x 5.7 inches (145.6 mm) x 0.4 inches (9.2 mm), Weight:169 oz (169 g), Display type:IPS LCD, Screen resolution (width x height):480 x 854, Pixel density:195 ppi, Display size:5 inch, OS:Android, Chipset:Qualcomm MSM8909 Snapdragon 210, CPU specs:1.1GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2200 mAh, Rear-camera resolution:5 MP, Front-camera resolution:2 MP

Color:Black/White, Dimensions (width x height x thickness):3.0 inches (75 mm) x 5.9 inches (150.6 mm) x 0.4 inches (9.5 mm), Weight:152 oz (152 g), Display type:LTPS IPS LCD, Screen resolution (width x height):1080 x 1920, Pixel density:400 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8274AB Snapdragon 800, CPU specs:2.2GHz×4(Quad core), RAM size:3GB, Storage size:32GB, Battery capacity:2500 mAh, Rear-camera resolution:16 MP, Front-camera resolution:8 MP

Color:Crimson/Pearl White/Graphite Grey, Dimensions (width x height x thickness):2.8 inches (70 mm) x 5.6 inches (142 mm) x 0.3 inches (7.3 mm), Weight:145 oz (145 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 1920, Pixel density:440 ppi, Display size:5 inch, OS:Android, Chipset:Qualcomm MSM8939 Snapdragon 615, CPU specs:1.7GHz+1.0GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:3000 mAh, Rear-camera resolution:16 MP, Front-camera resolution:8 MP

Color:Golden, Dimensions (width x height x thickness):3.0 inches (76.7 mm) x 5.7 inches (146 mm) x 0.3 inches (7.9 mm), Weight:146 oz (146 g), Screen resolution (width x height):720 x 1280, Pixel density:277 ppi, Display size:5.3 inch, OS:Android, Chipset:Mediatek MT6592M, CPU specs:1.4GHz×8(OctaCore), RAM size:2GB, Storage size:16GB, Battery capacity:2000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:White/Black, Dimensions (width x height x thickness):3.0 inches (76.5 mm) x 6.1 inches (154 mm) x 0.4 inches (9.3 mm), Weight:175 oz (175 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 1920, Pixel density:400 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8992 Snapdragon 808, CPU specs:1.8GHz+1.4GHz×6(Hexacore), RAM size:3GB, Storage size:64GB, Battery capacity:3500 mAh, Rear-camera resolution:21 MP, Front-camera resolution:8 MP

Color:Black/White/Copper/Silver Green/Purple, Dimensions (width x height x thickness):2.8 inches (72 mm) x 5.7 inches (146 mm) x 0.3 inches (7.3 mm), Weight:152 oz (152 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:Qualcomm MSM8974AC Snapdragon 801, CPU specs:2.5GHz×4(Quad core), RAM size:3GB, Storage size:32GB, Battery capacity:3100 mAh, Rear-camera resolution:7 MP, Front-camera resolution:2 MP

Color:Black/Red/Yellow/Blue/Coral/White, Dimensions (width x height x thickness):3.0 inches (75.7 mm) x 5.9 inches (150.9 mm) x 0.3 inches (8.3 mm), Weight:194 oz (194 g), Display type:Liquid Retina IPS LCD, Screen resolution (width x height):828 x 1792, Pixel density:323 ppi, Display size:6.1 inch, OS:IOS, Chipset:Apple A12 Bionic, CPU specs:2.5GHz+1.6GHz×6(Hexacore), RAM size:3GB, Storage size:256GB, Battery capacity:2942 mAh, Rear-camera resolution:12 MP, Front-camera resolution:7 MP

Color:Black, Dimensions (width x height x thickness):2.9 inches (73 mm) x 5.5 inches (140.9 mm) x 0.3 inches (7.5 mm), Weight:177 oz (177 g), Display type:P-OLED, Screen resolution (width x height):1440 x 2560, Pixel density:534 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8998 Snapdragon 835, CPU specs:2.5GHz+1.8GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3260 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:Prism White/Prism Black/Prism Green/Prism Blue/Canary Yellow/Flamingo Pink/Cardinal Red/Smoke Blue, Dimensions (width x height x thickness):2.8 inches (70.4 mm) x 5.9 inches (149.9 mm) x 0.3 inches (7.8 mm), Weight:157 oz (157 g), Display type:Dynamic AMOLED, Screen resolution (width x height):1440 x 3040, Pixel density:551 ppi, Display size:6.1 inch, OS:Android, Chipset:Exynos 9820, CPU specs:2.73GHz+2.31GHz+1.95GHz×8(OctaCore), RAM size:8GB, Storage size:512GB, Battery capacity:3400 mAh, Rear-camera resolution:16 MP, Front-camera resolution:10 MP

Color:Red/Black/Gold/Green, Dimensions (width x height x thickness):3.0 inches (75.4 mm) x 6.1 inches (155.9 mm) x 0.3 inches (8.2 mm), Weight:170 oz (170 g), Display type:S-IPS LCD, Screen resolution (width x height):720 x 1520, Pixel density:271 ppi, Display size:6.2 inch, OS:Android, Chipset:Mediatek MT6765 Helio P35, CPU specs:2.3GHz+1.8GHz×8(OctaCore), RAM size:4GB, Storage size:64GB, Battery capacity:4230 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Aurora Blue/Nebula Blue/Phantom Black/Coral Red, Dimensions (width x height x thickness):2.9 inches (73.4 mm) x 6.1 inches (155.2 mm) x 0.3 inches (8 mm), Weight:160 oz (160 g), Display type:LTPS IPS LCD, Screen resolution (width x height):1080 x 2340, Pixel density:415 ppi, Display size:6.21 inch, OS:Android, Chipset:Hisilicon Kirin 710, CPU specs:2.2GHz+1.7GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3400 mAh, Rear-camera resolution:24 MP, Front-camera resolution:8 MP

Color:Carbon black/Red flame/Glacier blue/Pearl White, Dimensions (width x height x thickness):2.9 inches (74.3 mm) x 6.2 inches (156.7 mm) x 0.3 inches (8.8 mm), Weight:191 oz (191 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 SDM730 Snapdragon 730, CPU specs:2.2GHz+1.8GHz×8(OctaCore), RAM size:8GB, Storage size:256GB, Battery capacity:4000 mAh, Rear-camera resolution:48 MP, Front-camera resolution:20 MP

Color:Blue/Black, Dimensions (width x height x thickness):2.9 inches (74.8 mm) x 6.1 inches (156.2 mm) x 0.3 inches (8.5 mm), Weight:170 oz (170 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1520, Pixel density:271 ppi, Display size:6.2 inch, OS:Android, Chipset:Mediatek MT6762 Helio P22, CPU specs:2.0GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:3850 mAh, Rear-camera resolution:13 MP, Front-camera resolution:16 MP

Color:Smoke Black/Capri Blue, Dimensions (width x height x thickness):3.0 inches (75.8 mm) x 6.1 inches (156 mm) x 0.4 inches (9.6 mm), Weight:197 oz (197 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 2300, Pixel density:397 ppi, Display size:6.4 inch, OS:Android, Chipset:Qualcomm SDM665 Snapdragon 665, CPU specs:2.0GHz+1.8GHz×8(OctaCore), RAM size:4GB, Storage size:64GB, Battery capacity:5000 mAh, Rear-camera resolution:16 MP, Front-camera resolution:16 MP

Color:Glacial Green/Ultramarine Blue/Onyx Black, Dimensions (width x height x thickness):2.9 inches (74.4 mm) x 6.5 inches (165.3 mm) x 0.3 inches (8.5 mm), Weight:199 oz (199 g), Display type:Fluid AMOLED, Screen resolution (width x height):1440 x 3168, Pixel density:513 ppi, Display size:6.78 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:4510 mAh, Rear-camera resolution:48 MP, Front-camera resolution:16 MP

Color:Dark Blue/Light Blue, Dimensions (width x height x thickness):2.9 inches (72.8 mm) x 6.2 inches (158.5 mm) x 0.3 inches (8 mm), Weight:181.5 oz (181.5 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 SDM765 Snapdragon 765G, CPU specs:2.4GHz+2.2GHz+1.8GHz×8(OctaCore), RAM size:8GB, Storage size:256GB, Battery capacity:4315 mAh, Rear-camera resolution:48 MP, Front-camera resolution:32 MP