Compare HTC U12 with 4040 devices. You can see which you should buy through this compiled table

Color:Black/Gray/Red/Rose Gold/Light Blue, Dimensions (width x height x thickness):3.0 inches (75.1 mm) x 6.2 inches (156.9 mm) x 0.3 inches (7.5 mm), Weight:169 oz (169 g), Display type:LTPS IPS LCD, Screen resolution (width x height):1080 x 2160, Pixel density:402 ppi, Display size:6 inch, OS:Android, Chipset:HiSilicon Kirin 960, CPU specs:2.4GHz+1.8GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3340 mAh, Rear-camera resolution:20 MP, Front-camera resolution:20 MP

Color:Iron Gray/Fine Gold/Oxford Blue, 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:198 oz (198 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:Mediatek MT6737, CPU specs:1.3GHz×4(Quad core), RAM size:3GB, Storage size:32GB, Battery capacity:5000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:Black Onyx/Silver Titanium/Gold Platinum/Coral Blue, Dimensions (width x height x thickness):2.9 inches (72.6 mm) x 5.9 inches (150.9 mm) x 0.3 inches (7.7 mm), Weight:157 oz (157 g), Display type:Super AMOLED, Screen resolution (width x height):1440 x 2560, Pixel density:534 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8996 Snapdragon 820, CPU specs:2.15GHz+1.6GHz×4(Quad core), RAM size:4GB, Storage size:32GB, Battery capacity:3600 mAh, Rear-camera resolution:12 MP, Front-camera resolution:5 MP

Color:Black/Warm Silver/Ice Blue, Dimensions (width x height x thickness):2.8 inches (72 mm) x 5.7 inches (146 mm) x 0.3 inches (8.1 mm), Weight:161 oz (161 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 MSM8996 Snapdragon 820, CPU specs:2.15GHz+1.6GHz×4(Quad core), RAM size:4GB, Storage size:64GB, Battery capacity:2900 mAh, Rear-camera resolution:19 MP, Front-camera resolution:13 MP

Color:White/Black/Gold/Pink, Dimensions (width x height x thickness):3.1 inches (79 mm) x 6.5 inches (165 mm) x 0.3 inches (8.1 mm), Weight:188 oz (188 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 1920, Pixel density:367 ppi, Display size:6 inch, OS:Android, Chipset:Mediatek MT6757 Helio P20, CPU specs:2.3GHz+1.6GHz×8(OctaCore), RAM size:4GB, Storage size:64GB, Battery capacity:2700 mAh, Rear-camera resolution:23 MP, Front-camera resolution:16 MP

Color:Mineral black/Platinum/Forest blue/Deep pink, Dimensions (width x height x thickness):2.8 inches (72 mm) x 5.7 inches (146 mm) x 0.3 inches (8.1 mm), Weight:161 oz (161 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 MSM8996 Snapdragon 820, CPU specs:2.15GHz+1.6GHz×4(Quad core), RAM size:3GB, Storage size:64GB, Battery capacity:2900 mAh, Rear-camera resolution:23 MP, Front-camera resolution:13 MP

Color:Black/White, Dimensions (width x height x thickness):3.1 inches (77.9 mm) x 6.0 inches (152.6 mm) x 0.3 inches (8.3 mm), Weight:162 oz (162 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:Cortex-A7, CPU specs:1.3GHz×4(Quad core), RAM size:1GB, Storage size:8GB, Battery capacity:2500 mAh, Rear-camera resolution:8 MP, Front-camera resolution:5 MP

Color:White+silver/gray/pink/soft orange/blue, Dimensions (width x height x thickness):2.8 inches (71.7 mm) x 5.7 inches (146 mm) x 0.3 inches (6.9 mm), Weight:129 oz (129 g), Display type:Super AMOLED, Screen resolution (width x height):720 x 1280, Pixel density:293 ppi, Display size:5 inch, OS:Android, Chipset:Qualcomm MSM8916 Snapdragon 410, CPU specs:1.2GHz×4(Quad core), RAM size:2GB, Storage size:32GB, Battery capacity:2300 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Black/White, Dimensions (width x height x thickness):3.0 inches (76.6 mm) x 6.1 inches (154.8 mm) x 0.3 inches (7.9 mm), Weight:165 oz (165 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 MSM8994 Snapdragon 810, CPU specs:2.0GHz+1.5GHz×8(OctaCore), RAM size:3GB, Storage size:16GB, Battery capacity:2900 mAh, Rear-camera resolution:16 MP, Front-camera resolution:8 MP

Color:Gold/Dark Gray/Rose Gold/Metal Silver, Dimensions (width x height x thickness):3.0 inches (75.4 mm) x 6.1 inches (153.9 mm) x 0.3 inches (7 mm), Weight:149 oz (149 g), Display type:AMOLED, Screen resolution (width x height):1440 x 2560, Pixel density:534 ppi, Display size:5.5 inch, OS:Android, Chipset:Qualcomm MSM8976 Snapdragon 652, CPU specs:1.8GHz+1.4GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:3000 mAh, Rear-camera resolution:16 MP, Front-camera resolution:8 MP

Color:Black/Silver, Dimensions (width x height x thickness):3.0 inches (75.5 mm) x 6.1 inches (155 mm) x 0.3 inches (7.8 mm), Weight:199 oz (199 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 2246, Pixel density:401 ppi, Display size:6.2 inch, OS:Android, Chipset:Mediatek MT6771 Helio P60, CPU specs:2.0GHz+2.0GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3050 mAh, Rear-camera resolution:16 MP, Front-camera resolution:16 MP

Color:Radiant Mist/Emerald Green, Dimensions (width x height x thickness):2.9 inches (74.6 mm) x 6.2 inches (157.6 mm) x 0.3 inches (7.9 mm), Weight:183 oz (183 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:402 ppi, Display size:6.4 inch, OS:Android, Chipset:Qualcomm SDM710 Snapdragon 710, CPU specs:2.2GHz+1.7GHz×8(OctaCore), RAM size:8GB, Storage size:128GB, Battery capacity:3700 mAh, Rear-camera resolution:20 MP, Front-camera resolution:25 MP

Color:Midnight Black/Sky Blue/Sapphire Blue/White/Red, Dimensions (width x height x thickness):2.9 inches (73.6 mm) x 6.1 inches (154.8 mm) x 0.3 inches (8 mm), Weight:162 oz (162 g), Display type: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:13 MP, Front-camera resolution:24 MP

Color:Mirror Black/Mirror Teal/Mirror White/Carmine Red/New Aurora Black/New Moroccan Blue, Dimensions (width x height x thickness):3.0 inches (76.6 mm) x 6.1 inches (155.3 mm) x 0.3 inches (8 mm), Weight:181 oz (181 g), Display type:G-OLED, Screen resolution (width x height):1080 x 2248, Pixel density:401 ppi, Display size:6.21 inch, OS:Android, Chipset:Qualcomm SM8150 Snapdragon 855, CPU specs:2.84GHz+2.42GHz+1.78GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3550 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Aqua Blue/Burgundy Red, Dimensions (width x height x thickness):3.0 inches (76.8 mm) x 6.3 inches (159.4 mm) x 0.4 inches (8.9 mm), Weight:190.5 oz (190.5 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1544, Pixel density:268 ppi, Display size:6.35 inch, OS:Android, Chipset:Mediatek MT6762 Helio P22, CPU specs:2.0GHz×8(OctaCore), RAM size:4GB, Storage size:64GB, Battery capacity:5000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Extraordinary Purple/Modest Green, Dimensions (width x height x thickness):3.0 inches (75.9 mm) x 6.2 inches (156.6 mm) x 0.3 inches (8 mm), Weight:180 oz (180 g), Display type:OLED, Screen resolution (width x height):1080 x 2160, Pixel density:402 ppi, Display size:6 inch, OS:Android, Chipset:Qualcomm SDM710 Snapdragon 710, CPU specs:2.2GHz+1.7GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:3930 mAh, Rear-camera resolution:20 MP, Front-camera resolution:24 MP

Color:Jewelry Black/Jewelry Green/Jewelry Rose, Dimensions (width x height x thickness):3.0 inches (75.8 mm) x 6.5 inches (164.9 mm) x 0.3 inches (8.4 mm), Weight:178 oz (178 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1600, Pixel density:269 ppi, Display size:6.52 inch, OS:Android, Chipset:Mediatek MT6763V Helio P23, CPU specs:2.0GHz+1.5GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:4000 mAh, Rear-camera resolution:16 MP, Front-camera resolution:8 MP

Color:Matte Black/Glossy Black, Dimensions (width x height x thickness):3.1 inches (77.6 mm) x 6.7 inches (171 mm) x 0.4 inches (9.5 mm), Weight:240 oz (240 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:391 ppi, Display size:6.59 inch, OS:Android, Chipset:Qualcomm SM8150 Snapdragon 855+, CPU specs:2.96GHz+2.42GHz+1.78GHz×8(OctaCore), RAM size:12GB, Storage size:1024GB, Battery capacity:6000 mAh, Rear-camera resolution:48 MP, Front-camera resolution:24 MP

Color:Coral Red/Jade Green, Dimensions (width x height x thickness):3.0 inches (76.8 mm) x 6.3 inches (159.4 mm) x 0.4 inches (8.9 mm), Weight:190.5 oz (190.5 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1544, Pixel density:268 ppi, Display size:6.35 inch, OS:Android, Chipset:Qualcomm SDM439 Snapdragon 439, CPU specs:1.95GHz+1.45GHz×8(OctaCore), RAM size:3GB, Storage size:32GB, Battery capacity:5000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Dark Grey, Dimensions (width x height x thickness):3.2 inches (82 mm) x 6.7 inches (171 mm) x 0.3 inches (8.8 mm), Weight:191.6 oz (191.6 g), Display type:IPS LCD, Screen resolution (width x height):640 x 1352, Pixel density:219 ppi, Display size:6.8 inch, OS:Android, Chipset:Mediatek MT6739, CPU specs:1.3GHz×4(Quad core), RAM size:2GB, Storage size:32GB, Battery capacity:3500 mAh, Rear-camera resolution:13 MP, Front-camera resolution:8 MP

Color:Cosmic Grey/Cosmic Black, Dimensions (width x height x thickness):3.0 inches (76 mm) x 6.6 inches (166.9 mm) x 0.3 inches (8.8 mm), Weight:220 oz (220 g), Display type:Dynamic AMOLED 2X, Screen resolution (width x height):1440 x 3200, Pixel density:508 ppi, Display size:6.9 inch, OS:Android, Chipset:Exynos 990 ,Qualcomm SM8250 Snapdragon 865, CPU specs:2.73GHz+2.5GHz+2.0GHz×8(OctaCore), RAM size:12GB, Storage size:128GB, Battery capacity:5000 mAh, Rear-camera resolution:108 MP, Front-camera resolution:40 MP

Color:Blue/Black, Weight:161 oz (161 g), Display type:IPS LCD, Screen resolution (width x height):720 x 1520, Pixel density:276 ppi, Display size:6.09 inch, OS:Android, Chipset:Unisoc SC9863A, CPU specs:1.6GHz+1.2GHz×8(OctaCore), Battery capacity:4000 mAh, Rear-camera resolution:13 MP, Front-camera resolution:5 MP

Color:Tropical Green/Glacier White/Interstellar Gray, Dimensions (width x height x thickness):3.0 inches (76.7 mm) x 6.5 inches (165.8 mm) x 0.3 inches (8.8 mm), Weight:209 oz (209 g), Display type:IPS LCD, Screen resolution (width x height):1080 x 2400, Pixel density:394 ppi, Display size:6.67 inch, OS:Android, Chipset:Qualcomm SM7125 Snapdragon 720G, CPU specs:2.3GHz+1.8GHz×8(OctaCore), RAM size:6GB, Storage size:128GB, Battery capacity:5020 mAh, Rear-camera resolution:64 MP, Front-camera resolution:16 MP

Color:Nebula Blue/Jade Black, Dimensions (width x height x thickness):3.0 inches (75.2 mm) x 6.3 inches (159.3 mm) x 0.3 inches (8.7 mm), Weight:186.7 oz (186.7 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:403 ppi, Display size:6.38 inch, OS:Android, Chipset:Qualcomm SDM665 Snapdragon 665, CPU specs:2.0GHz+1.8GHz×8(OctaCore), RAM size:8GB, Storage size:128GB, Battery capacity:4500 mAh, Rear-camera resolution:48 MP, Front-camera resolution:16 MP