Fit limitations
We base the match on screen diagonal and width. Three traits can skew that picture — we're working on adding them to the database. Until then, check them on the customer's model.
Curved screen
When the phone's front wraps over the side edges, flat glass won't sit flush at the sides — air bands remain, dirt builds up under them, and the glass is easy to pry off by accident. Such a model usually needs full-cover glass, glued across the whole surface.
Notch (cutout)
Models with a large notch (e.g. iPhone X, Huawei P20) often use glass with a dedicated cutout — standard glass may not match the shape at the top. Small pill-style cutouts are usually fine.
Physical buttons
Older models with a physical Home button (Samsung Galaxy S3–S7, Note7, Huawei P20) used glass with a cutout for the button. Affects few models, but worth checking.