Smartphone touchscreen not responding

[neku]

I have noticed that the smartphone touchscreen is not responding for one of my smartphones. Is there any way to test the touchscreen whether it is malfunctioning due to hardware, or if there is a software, malware problem?

 

[gwolf666]

In my experience, when a smartphone's touchscreen becomes unresponsive, the first thing I would recommend is running a basic test to determine if the problem is hardware or software-related. A simple way to do this is to restart the phone in safe mode, since only system applications run in this mode, which helps rule out any apps causing the conflict. If the screen works correctly in safe mode, the problem is likely caused by an installed application or malware. You can also try calibrating the screen if your device allows it, or perform a factory reset as a last resort, but be sure to back up your data first. If the screen remains unresponsive in safe mode, then the problem is clearly hardware-related, and in that case, it's best to take it to a qualified technician to have the screen or digitizer checked.