required beforehand: a prerequisite fund of knowledge. something prerequisite: A visa is still a prerequisite for travel in many countries.
This can get a little pricey -- an iPhone 6 screen repair kit costs about $150 -- but it is cheaper than buying a new phone altogether. Of course, not all of us have the skills or time to fix our own phone screens.
A screen replacement by Samsung may not cost you anything if your screen has malfunctioned randomly and needs to be repaired. The standard warranty on the phone is one year. However, if the screen is damaged due to accident or something not related to manufacturing, you are not covered.