Samsung and others - What temperature should you use to peel off touch screens and LCDs

Hello, I have a window heater and I always have a problem when removing the LCD screen. It's going somehow, but "tediously"
I decided to buy a heat gun

Temperature range: 40-400 degrees C


I have a question about how to safely remove the LCD, e.g. in a Samsung S4.
How much should I spend on the heater and then at what temperature should I heat it from the bottom with a heat gun?
What is the approximate heating time?

And the second question, I would like to remove the touches properly, e.g. in LG, so that the original gasket - glue remains. Also, can I do it with just a heat gun?

A good heater, 70 degrees measured on the LCD and a cardboard playing card, and all Samsung models come off. And the seals and adhesives can be replaced with new ones. And this heat gun is a container. Buy a Makite or Steinel with smooth temperature and air flow control.

Hello, thanks, could you tell me in more detail how you do it? I read that the most optimal temperature is 90 degrees, but I don't know how much to set for the back of the phone frame.

@sagem90: pay attention to what misiekelk wrote - measure the temperature on the LCD and don't rely on what you have on the device

Multi_com do you have any thermometers?

There are some, but buy a regular probe and connect it to a meter - most of them can measure temperature and it will be the cheapest

I didn't even know, to sum it up. We can heat the entire LCD with a heater or heat gun from the bottom or top, as long as the temperature is around 70 degrees, right?

If you are talking about separating the LCD from the frame, it is best to use a separator - after bathing in chemicals (if it is AMOLED), first a heater, then a heat gun - the whole thing looks like here https://www.youtube.com/watch?v=GdY1Jx8ykmw