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.
Apple retail stores now repair iPhone 5 displays while you wait. Fixing a screen costs $149, down from $229 for a replacement. Reports say the change is first of more in-store repairs planned.