N.P.
I think it's a hard phase just before they learn to sit up on their own. It's hard for them to entertain themselves. My 4 month old..almost five is a smiley happy, giggly baby when he is being held. Put him down and he is ornery! He always wants to be held and walked around..played with, talked to. My first was the same. He grew out of it when he could sit up on his own, see the world around him and play. Then it got better with each step..crawling, walking, etc.
At this point these babies can still get overstimulated too. Sometimes they just want to cuddle and walk around and not have toys and noise flying in their face too much. At least that is how my kids were/are.