A portable 4G/5G WiFi router can serve as a backup internet option when a fixed broadband connection experiences an outage. If a compatible mobile network remains available, users may be able to continue checking emails, accessing online documents, attending meetings, or completing other essential tasks. This can be especially useful for people working from home or managing online businesses. The router's performance will depend on mobile coverage, network congestion, data allowances, and the device's capabilities. Users should test reception indoors before relying on it as a backup and consider the cost of maintaining an appropriate data plan. Although it cannot guarantee uninterrupted connectivity, it can provide an additional option when the primary connection fails.