The car Payman drives is a Fisker Karma that is electric unless it runs out of battery, every shot of this car has an exhaust note!! Maybe they never charged it.
When the phones are copied the list of files is shown containing dll files. dll files are used on Windows operating Systems, the telephone runs an Android Operating system.
Faraz arrives at the party and Tamar escapes upstairs while having no pants on. Faraz leaves and we see Tamar coming back downstairs while having pants. She was listening to Faraz and Peyman talking to each other the whole time.