When Patrick tells Lisbon to redial O'Laughlin's phone; she press one button. The phone he uses is an iPhone 4 and there isn't any one button redial. We can also clearly see the phone is on lock mode when she is talking to Red John.
As Red John feigns reading a newspaper, other sections of the paper rest folded on the table in front of him. Long before Patrick Jane sits down, the barrel of a gun is clearly visible inside the folded newspaper ready to threaten him, spoiling the surprise of the moment. Re-framing and cropping the shot would have concealed barrel while establishing the paper until the proper reveal.