How can I distinguish two identical phones?

  1. Some phones don't update file dates properly.

  2. Not sure, but maybe the same thing happens in Windows Explorer and the phone just has a delay when doing some actions?

  3. MTP doesn't need ejecting. Once an operation says it is finished, it is finished.

Please start new threads for any other questions or follow-ups to these questions. This thread is about "How can I distinguish two identical phones?", so anything that doesn't fit that subject is better off in a thread of its own, please. Then people searching can find answers more easily, and we don't have to keep track of multiple parallel conversations in one thread. (And and all the other reasons mentioned here.)