Is it rude to be on my phone during a Dubai escort date?

Yes. Put your phone away. You are paying for companionship and the companion is giving you her undivided attention. Checking your phone signals disinterest and is disrespectful to her time. A brief check for an urgent message is understandable but scrolling through emails or social media during dinner is rude. If you must take a call, apologise and keep it brief. The companion deserves the same courtesy you would give any date.