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The phone started acting day before. It stopped recognizing touch, but the phone still functions (get message, get phone call, screen show no defect). Do I need to replace the screen?

Hi @acgg , It appears as though the digitizer is faulty but you will have to replace the LCD screen as well as they are a complete assembly. Here’s the ifixit LG G6 Screen Replacement guide which may help. Replacement assemblies are available online. Just search for LG G6 LCD + digitizer replacement to get results for suppliers