Iphone 5S/5 BLACK SCREEN iphone possible solution

I have two iphone 5 both have black screen, the light is working, pc recognises the phone. I found the same problem on a iphone 5s. no solution that i know.

Now im working on a 5s, I Reheated the pcb near lcd/touch connectors, the screen was back alive for 2 seconds, than dead again

Today Samsung mobile phones are very famous around the globe , owing to large sale of Samsung its common that cell phones got firmware problems , in most of the cases its recommended to upgrade the firmware or replace it with stock firmware . On net there are plenty of reputed companies which provide Samsung firmware but most of them charges some handsome money to let you download the desired firmware , here we are introducing some well reputed website which have large collection of Samsung firmware . you may follow this link to find you desired firmware . they also provided some contact form where you may do request , not only for Samsung but all other famous brand firmware. Our Said site is developed by professionals of cellphone tech field , they have one special section which is about Samsung phone flashing with different methods . feel free to use this firmware source confidently .