- The reason no one used a cell phone is because cell phones only work on a plane that is flying under 10,000 and under 155 mph, that's why there were only two momentary cell phone calls on 9/11. Cell towers only send/receive from modestly above the horizon and can only "handshake" phones that aren't moving too quickly relative to their position. There is still a remote possibility of nothing more than a handshake from a passing phone, however - the cell tower would then log into its metadata the time/date that the phone was in its coverage area. But different regions have different rules and practices on storing metadata, some delete it after only a few days.
- The pilot and co-pilot did not ask to fly together, so it would have been a random assignment for each to work with the other that day.
- 370's engines reported cruising at 45,000 feet for some time; this is the service ceiling of the 777 and no sane pilot would attempt it, as controls would become very vague and there would be a very real possibility of a stall. Cabin pressure would have been essentially unaffected, however the pilot does have the option of depressurizing the cabin (and the crew can actually disable the oxygen masks that fall from above the seats), which would result in certain death for everyone behind the cockpit door in short order.
- After cruising at the service ceiling, the engines then reported a sudden plummet in altitude to 23,000 feet in the space of a minute, however it is in question if this is physically possible for the 777 at all. If not, it means the engines were sending ersatz data most likely resulting from the software having been deliberately turned off and then rebooted. So if the data is right, it's suspect. If it's wrong, it's suspect.