Car Seat Back Support Stand Purpose and use: A rearseat device holder that attaches to the back of a car seat to hold a phone or tablet. It provides a stable, hands viewing option for passengers. Compatibility: Supports devices with screen sizes from 4.7 inches to 12.9 inches. Why you need it: Keeps screens at a comfortable viewing height for passengers, freeing hands and reducing the need to hold devices during travel. Provides a dependable platform for entertainment, navigation, or video calls on the move. Key attributes: function is to hold a phone or tablet on the back of a car seat; compatible with 4.712.9 inch devices; designed for travel use with durable construction. Use scenarios: Family road trips: rearseat passengers watch movies or use apps on tablets or large phones. Carpool or rides with passengers: rearseat video streaming or video calls without holding the device. Commuting with backseat passengers: navigation, maps, or media playback for those in the back seats. Maintenance and care: clean with a soft, damp cloth as needed; ensure the device fits securely before use. Notes: consistent with the product name Car Seat Back Support Stand and its stated device size range for compatibility.