A modern phone screen is a sandwich: a sheet of front glass, a thin layer of optical adhesive (OCA), and the OLED or LCD panel that actually makes the picture and reads your touch. When only the top layer breaks, replacing the whole sandwich means throwing away a perfectly good display.
Glass-only repair separates the cracked glass from the panel, cleans off the old adhesive, laminates a new sheet of glass with fresh OCA, and cures it. Done carefully, the result looks and feels exactly like the original, because underneath, it is the original. Brightness, color, touch response and Face ID all behave as they did before the drop.
A full screen replacement is the right call when the panel itself is damaged: lines, dead zones, black spots, a picture that flickers or doesn't appear at all. In that case the whole assembly comes out and a new one goes in. It's a faster job, but the quality of the replacement panel matters a lot, and on some models certain features behave differently with a non-original display.
We check which one you need during the free diagnostic. If the panel works, we'll usually recommend keeping it. If it doesn't, we'll quote a full replacement and tell you plainly what to expect. Either way, you approve the price before any work starts.