Notice: Now is summer， the weather is very hot so this phone case shell color Red will turn yellow， color black shell will turn red， color purple shell will turn pink， color brown shell will turn green in the hot weather， don't worry， this is normal phenomenon in such hot summer. Please put the phone shell under ther air conditioner for one minutes or put it to the Refrigerator for 10 secondes， the color will restore the original color.Thank you for your supportting.<br /><br />If the phone shell does not change color， it is because the temperature is not high enough.<br />The temperature of the discoloration is above 31 degrees Celsius， the higher the temperature， the faster the discoloration， the darker the color!<br /><br />Features:<br />Anti-knock，scratch-resistant，shock-proof.<br />Ultra thin PU leather phone shell catoon fundas.<br />Special design，simple style， comfortable touch feeling.<br />Fashion and fascinating amusing phone full body protection. <br /><br />Color: Black(turn red)， Red(turn yellow)， Purple(turn pink)， Brown(turn green)<br /><br />Package:1pcs phone heat sensor case shell