Answer:
Here we have the question:
Do you want to upgrade your phone?
And the answer depends on at least two things, we can think of those options.
1) The conditions of the upgrading.
What does Tony need to do?
He needs to know the conditions before saying yes, for example, the price of this upgrade, when he will receive the upgrade, etc.
2) The benefits of upgrading:
In which way this upgrade benefits Tony?
If the upgrade does not befit Tony in any way, he may not accept the upgrade (for example if the upgrade only has a better camera, and Tony never takes pictures, then the upgrade does not benefit Tony), then he needs to know all the possible benefits of the upgrade in order to give an answer.