Touch screen works only when touching the phone or charging
I have problem with my iPhone 5. After replacing the screen the touch works normally only when I hold it, touch the housing or when it's connected to the charger. It doesn't respond to touch when the phone lies on table and I try to operate just with the finger touching the screen.
I guess that this is some kind of problem with grounding but i'm not sure about it. Did anybody encouter this kind of problem?
The pins on the connector look perfectly fine, i've tried different battery and blowing connectors with compressed air. It has to be the screen's fault because everything works fine when I connect the old screen. Unfortunately I can't send it for replacement because i have already taken off the protectors.
If anybody has any idea what might be the problem, I would be greatful if you could tell me something about this.
Sorry for my bad english and thanks in advance.
Is this a good question?