About WillItSnap

WillItSnap answers the #1 question people ask when upgrading phones: "Will my old phone case fit my new phone?"

How It Works

Phone case compatibility is ultimately a phone-to-phone question, not a case-by-case question. If two phones have different dimensions, camera layouts, or button placements, then no case designed for one will properly fit the other — regardless of brand.

We compare exact manufacturer specifications across multiple dimensions:

• Height, width, and thickness — even 0.5mm matters with a snug-fitting case
• Camera module layout and size — the camera cutout must align precisely
• Button placement — volume, power, action buttons, and camera controls vary between models
• Port type — Lightning vs USB-C affects the bottom cutout

Our Scoring System

Every compatibility check returns a score from 0 to 100:

• 90-100: Perfect Fit — The case should fit with no issues
• 70-89: Partial Fit — The case might work but with noticeable issues
• 0-69: Won't Fit — The case will not fit properly

Our algorithm is fully deterministic — no AI guessing, just math based on real manufacturer specs.

Data Sources

All phone dimensions are sourced from official manufacturer specifications and verified against trusted review sources. We currently cover 40+ phone models from Apple, Samsung, and Google, with more being added regularly.

Affiliate Disclosure

When your old case doesn't fit, we recommend top-rated cases for your new phone through Amazon. As an Amazon Associate, WillItSnap earns from qualifying purchases. This doesn't affect our compatibility scores — those are purely based on phone dimensions.