Can I get some help with a screen sensitivity problem?

[Medly]

Screen sensitivity problems

I have a new Galaxy S6. I've noticed that screen does not seem anywhere near as sensitive as my old S4. I can't seem to use swype without making mistakes because the screen does not register properly a lot of the time. I have also noticed that if I put the phone down on a surface and try to operate the screen with one finger (without holding the phone) the screen becomes very unresponsive and registeres hardly any touches at all. Has anyone else noticed a similar thing?

Thanks