Your mobile? Guess it depends on the honesty of the cleaning crew or whether another passenger saw it and picked it up and kept it. Wouldn't count on seeing it again though.

Your baggage? I've found this depends on whether Emirates handle the baggage locally or it's managed by a third-party on their behalf. Emirates once lost one of my bags from LHR to SYD via DXB and I didn't see it for 3 days... their local agent in Sydney was useless and I could never get anyone to call me back to check on it's status. I'd advise talking to the Emirates Dubai call centre instead - I ranted at Skywards in Dubai and my bag miraculously appeared within 30 mins (about the time it would take to put it in a van at the airport and drive to my house).