A 4G LTE-Advanced Mobile WiFi device, commonly called a MiFi, is a portable wireless router that uses a mobile network (4G or 5G) to create a personal WiFi hotspot.
Instead of relying on fixed broadband, the device connects to a cellular network via a SIM card—just like a smartphone—and then shares that internet connection with multiple devices such as phones, laptops, tablets, or smart TVs.
Key Features:
• Portable internet: Small and battery-powered, so you can carry it anywhere.
• Multiple connections: Supports several devices at once (typically 5–30 depending on the model).
• High-speed connectivity:
• 4G LTE-Advanced offers faster speeds than standard 4G by combining multiple signals (carrier aggregation).
• 5G MiFi provides even faster speeds, lower