Now the most important thing to think about is this:
Will Zoya use her phone and inform her wonderful Mr Khan that she is in fact locked in and is unable to come out...
... Or will she choose to be silly and forget about the invention of mobile phones during crucial moments like this so that unnecessary misunderstandings can occur?
Looking at how Zoya has chosen to make use of this wonderful mobile phone invention thus far despite her apparent love for technology...
Could've called Asad and tell him to stop Najma's wedding but didn't.
Could've called Asad for help as soon as Ayaan collapsed but didn't.
... I'm gonna go with the second option. What do you guys think? :p