The size/weight of each model is as follows.
iPhone 12 mini | 68.5 x 135.5 x 10.5 mm / 24g
iPhone 12/12 Pro | 75.5 × 150 × 10.5 mm / 30g
iPhone 12 Pro Max | 82.5 x 165 x 11 mm / 34g
iPhone 11/XR | 78.5 x 150 × 10.5 mm / 25g
iPhone 11 Pro | 74.5 × 146.5 × 11 mm / 28g
iPhone 11 Pro Max | 80.5 x 160 × 11 mm / 31 g
iPhone 6/7/8/SE | 69 × 140 × 11 mm / 25g
iPhone X/Xs | 72.5 x 145 × 10.5 mm / 25g
iPhone 6 Plus/6s Plus /7 Plus/8 Plus | 80 × 160.5 × 11 mm / 31 g
iPhone Xs Max | 80.5 x 160 × 11 mm / 33g