Sam Rutherford for Engadget 88 100 Expert Score Best flagship foldable phone Samsung Galaxy Z Fold 7 Read our full Samsung Galaxy Z Fold 7 review Full screen size: 8 inches | Folded screen size: 6.5 inches | Storage capacity: Up to 1TB | Weight: 215 grams | Max battery life: Up to 24 hours One of the biggest issues with foldable phones is the added size and weight that often comes with the inclusion of a flexible display.