Cellular connectivity over the mobile phone network offers an alternative to a WiFi connection, when a fixed line is unavailable. These routers contain a SIM card slot, similar to a smart phone and provide coverage and speeds consistent with the SIM card installed - with 3G, 4G or 5G.
Some are portable devices whilst others are standard household WiFi routers with the additional cellular connectivity. Please note any SIM card used will be subject to a standard contract from your provider.
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