Is there difference in reward for reciting the Qur'aan Shareef from the Mushaf and from a smartphone?

Answer

Most certainly it is preferable and more rewarding to recite the Qur'aan Majeed from the Mushaf. Reciting from smartphones, etc. should be the last resort. In fact it is more rewarding for even a Haafiz of the Qur'aan to recite from the Mushaf.