Answer to "iPhone won't turn on after screen replacement?"When it just makes just a chime the LCD is under some kind of stress. This is caused from the back metal bracket out of alignment creating upward pressure. Try realigning it to test it remove it. WOW! it now boots up but only if you remove and re-install the battery connection. Now for all you Red and Blue screen people out there your motherboard is damaged with the wrong screw installed or over tightened! No google result will fix a bad trace on a motherboard so stop looking and consult a professional board repair specialist.
Answer to "iPhone 6 touch not working after applying OCA."I am working on it as-well. I was loosing total touch in the beginning running standard settings on the Vacuum lamination machine and then the autoclave. I now run the lamination at 1.2 on the gauge instead of the standard 2.7-3 and the plate drops extremely slow. Also I run it manually, I have the plate drop "watching it" and only let it laminate for 1-2 seconds then hit the "red stop". Now for the Autoclave I have turned it down to 2.7 from the preset 4.2 even though all the info available says 6.2 is OK. its way to high for the 6 from my findings. This is as far as i have got and am not losing touch anymore. But its not perfect and i still think the polarizer need some looking into. Touch still works with this method. I hope to find the exact problem and solution soon. I only know what it is not. its not the conductive glue, its not the glass or OCA because some are perfect and others are not with the same material 50+ units tested. I encourage you guys to test at every stage, seek out the best quality...