Common Phone Screen Replacement Problem

Among all the phone screens that we’ve replaced in the past a few years, there are at least 3 out of 10 replaced screens still have the protective film on (blue plastic on of the screen shown below). This is a frequently seen bad phone screen replacement.

It takes only a few seconds for this protective plastic to be removed. But why there is a high percentage of replaced screens still have them on? I think the reason might be a large number of technicians don’t know what the plastic is for.

Heat dissipation is essential for a phone to operate properly, in that Electronic components can only work under specific temperature not too high or low. If a phone is overheated, it will reboot or power down or freeze. To help heat dissipation, specific material is used. You can see there is a thin black material under the blue plastic, which is made from graphite and graphite is efficient heat conductive material. 

The blue plastic is used to protect the heat conduct material from being damaged before a screen is fitted on a phone. But what will happen if it’s not removed? It may don’t cause any issues in days or weeks, even months. But because it prevent heat from dissipating, temperature inside the phone will get higher than it is designed to accept, especially when you are playing games or run high CPU utilisation rate apps. Long term of high temperature around electronic components can accelerate ageing and increase the fault rate of a phone considerably.

It’s always good to know how a technician repair your phone, and if you are a phone repair technician who happens to see this post, please remove the protective plastic before fitting the screen on.

bad screen replacement

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