Mobile Check-in is a convenient feature that allows travelers to check in for their flights using a smartphone or tablet. Instead of waiting in long lines at the airport, passengers can complete the check-in process from anywhere, often starting 24 hours before their flight. This process typically involves entering personal information and selecting seats. Once checked in, travelers receive a digital boarding pass, which can be saved on their device or sent via email. This eliminates the need for paper tickets and speeds up the boarding process, making travel more efficient and user-friendly.