First, please understand that only iphone LCD has bezel frame on the glass, so this article is special for iphone LCD refurbishing, not for samsung.
The cold press framed glass got very popular from 1 year ago, it was a new technology for making iphone's LCD refurbishing more faster, the glass come with a frame laminated with cold glue, the advantage of the cold glue is that it won't deteriorate after few months and lose viscidity (most of the hot glue laminated frame got easily separated from the glass after few months ).
Why did this happen?
Hot glue is a special glue need heat and become viscidity, but over heat can damage the chemical property of the hot glue, in fact hot glue is not bad, the problem is that we can't control the temperature very well when we heat up the hot glue (though we have the high accuracy temperature controller), because the hot glue is very sensitive with temperature. If temperature is too high, it will damage the glue, if temperature is too low, it won't melt the glue very well, the perfect temperature for hot glue melting is about 120C/248F degrees.
What is the trending of cold press framed glass for iphone?
Honestly speaking, i really loved the cold presse framed glass when i reapir a iphone cracked LCD, because it really save my time, what i need to do is just to put a polarizer film and OCA glue on the LCD by the film laminator such as OM-F1, this F1 developed with a universal mold for all iphone, and it has a flex cable protection design, make sure the flex cable always is safe. this F1 also don't make bubbles after OCA film or poalrizer film installed on the LCD.
After polarizer film and OCA film installed, we need a alignment mold to regulate the framed glass on the LCD, we highly recommend you buy the mold from OCAmaster together with framed glass, because of our mold designed with same size as our framed glass, so it is high accuracy.
The final step is to laminate it, we have a special developed lamiantion mold for iphone 4.7 and 5.5 inches LCD, it has the flex cable protection as well, which is really high security when you refurbishing iphone LCD.