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What should I do if the internet light is off or there is an error message “ WAN Port Unplugged” on the TP-Link router page?
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![How to troubleshoot if I have low speed with TP-Link Wireless 4G LTE Router working as 3G 4G Router Mode How to troubleshoot if I have low speed with TP-Link Wireless 4G LTE Router working as 3G 4G Router Mode](https://static.tp-link.com/image-20210628112709-6_1624850976779b.png)
How to troubleshoot if I have low speed with TP-Link Wireless 4G LTE Router working as 3G 4G Router Mode
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