As you are walking by, run across a hooded figure. Quickly comes over to you and gives you a box.
And without warning he gives you a package.
Kid, this is me, you from an alternate universe who was more sucessfull in life.
This phone is a device powered by a quantum shifter. It has the capability to alter reality. It is also a highly advanced AI. Tell it what it wants and it will grant you that choice.
Choose wizely kid.
Your Alternate Self