14
Troubleshooting
Solutions to common problems during setup or use are provided here for reference. Follow the steps and the provided link below to diagnose and solve
problems you might experience with your Deco.
If problems still exist, contact us: https://www.tp-link.com/support
Q1. What should I do if I fail to connect to the internet over the mobile connection?
• Verify that your SIM card is an NR or LTE card.
• Make sure that the nano SIM card is inserted correctly into Deco and the Deco is operating in 4G/5G Router mode.
• Check with your ISP to ensure that your SIM card is in your ISP’s service area.
• Check with your ISP to ensure that your 4G/5G mobile plan is available.
• Move your Deco to a dierent location such as closer to the window or door to see whether it gets better signal strength.
• Launch the Deco app, go to More > Data Settings to verify if the Total/Monthly Used exceeds the Total/Monthly Data Usage Limit. If it does, set Total/
Monthly Data Usage Limit to 0(zero), or disable Total/Monthly Data Usage Limit.
• Launch the Deco app, go to More > Internet to verify Mobile Data is enabled.
• Conrm with your ISP if you are in a roaming service area. If you are, go to Advanced > Internet in the Deco app to verify Data Roaming is enabled.
Q2. What should I do if I fail to congure the satellite Deco and get stuck on “We couldn't nd another Deco”?
• For Deco which is operating in 4G/5G Router mode and set as the main Deco, disconnect the Ethernet cable (if any) connected to the front-end
router with DHCP Server function from the Deco’s Ethernet port and try again. If it doesn't work, try the following guide.
• Refer to the guide https://www.tp-link.com/support/faq/1447/ or video https://youtu.be/iVgDzoo16T4
Q3. What should I do if I fail to congure the main Deco and get stuck on “Testing Internet Connection”?
• Refer to the video https://youtu.be/OSUrGdWH-i0
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