While waiting for Josh at the bar, Liza fixates on the "3 dots" at the bottom of the text message conversation, which implies that she and Josh are both using iMessage. In the next scene, when Liza shows her phone to Maggie, the text messaging conversation bubbles were green and gray (as opposed to blue and gray for iMessage), which means that Josh either does not have an iPhone, or that he did not have iMessage turned on. It is not feasible that Josh would have intermittently turned iMessage on and off while texting with Liza, which means that Liza either should not have seen the 3 dots at the bottom, or the text bubbles should have been blue and gray.