I really think he would be able to chuck a phone pretty far. Anywhere around that dam is not out of his league.
It is no good basing the throw on what an average "us" would do. This guy was a former (?) footy player, young and lean, and probably desperate (adrenalin coursing through his body) when he threw the phone.
Decent 13-15 year old football players in the US are expected to be able to throw a football 35-40 yards (32-36m).
Decent 16+ year olds are expected to be able to throw about 50 yards (45m).
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imo