Is Replacement of Only G3 Touch Digitizer is possible?

I have an issue with my Lg G3 LS990 touch screen digitizer glass. The glass popped up from left bottom and can see the light clearly. So, thought of replacing the glass. I saw in aliexpress that Touch screen digitizers are available. So is only glass replacement is possible in G3 ? Display is very fine. I happened to see in youtube videos that only LCD replacement is done but not Glass digitizer replacement. Could anyone clear my doubt? had anyone replaced their only glass and using it without any issues?

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