Hi feiyang74,
Checking out the compatibility section of an iPhone 11 Silicone case, it lists "iPhone 11" as the only compatible model.
The technical specifications page for iPhone 11 at iPhone 11 lists these dimensions:
- "Width: 2.98 inches (75.7 mm)
- Height: 5.94 inches (150.9 mm)
- Depth: 0.33 inch (8.3 mm)"
The page for iPhone X at iPhone X provides those dimensions as:
- "Height: 5.65 inches (143.6 mm)
- Width: 2.79 inches (70.9 mm)
- Depth: 0.30 inch (7.7 mm)"
The iPhone 11 is .29 inches taller, .19 inches wider, and .03 inches deeper. It would not be expected that an iPhone 11 case would fit well onto an iPhone X.
Regards.