OneNZ Deco X805G drops out daily on 5G

BenNZ

Yesterday

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Registered: 2025-10-14

OneNZ Deco X805G drops out daily on 5G

Yesterday

Tags: #Network Connectivity

Model: Deco X80-5G

Hardware Version: V1

Firmware Version: 1.0.6 Build 20241212 Rel. 39475

Hello!

I’m using a TP-Link Deco X80-5G router with One NZ on the 4G/5G broadband unlimited plan. The connection works, but I experience dropouts roughly every 24 hours after it has been connected.

When it drops out, the internet seems to time out, for example, on Discord, the call will spike to 5000 ping, then the modem light turns red. The only way to fix it is to wait about 5 minutes until it reconnects on its own, or to go into the Deco app and switch from 5G Preferred to 4G, then back to 5G Preferred, which instantly restores the connection.

When I check the cellular section in the Deco app during the dropout, it still shows strong signal bars and good dBm values, as if it’s still connected to the tower, but there’s no internet.

I really want to use 5G because I get lower (better) RSRP dBm, full bars, and very fast, stable speeds compared to fewer bars and slower speeds on 4G. The internet works perfectly on 5G until it drops out once a day.

2 Reply

HelpFixDecoApp

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Yesterday

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Re:OneNZ Deco X805G drops out daily on 5G

Yesterday

@BenNZ

Thanks for reaching out. I understand that you are using a Deco Mesh 4G/5G model with a One NZ SIM card, and while your 5G connection works well most of the time, you experience daily dropouts where the internet stops working for several minutes before reconnecting, or you have to manually switch between 4G and 5G to restore the connection.

Here are some steps you can follow to troubleshoot this issue:

1. Check SIM Card Compatibility:
• Make sure your SIM card works properly in another device, such as a smartphone or another 4G/5G router.
• Confirm with your SIM card provider (One NZ) that your SIM card is allowed to be used in third-party routers, not just in phones or specific carrier devices.

2. Network Compatibility:
• Verify that your Deco Mesh model supports the same 4G/5G bands and network types as your SIM card. You can find the supported bands for your Deco model on the official TP-Link website (for example, Deco X50-5G specifications: https://www.tp-link.com/en/home-networking/deco/deco-x50-5g/#specifications). Compare these with the information from your SIM provider.

3. Additional Troubleshooting:
• If you are using the Deco in "Wireless Router Mode" (with Ethernet as the internet source), please refer to the regular Deco troubleshooting guide: https://www.tp-link.com/support/faq/3665/
• If the issue only happens on 5G and not on 4G, it may be related to network stability or compatibility between the Deco and your carrier's 5G service. Sometimes, carriers may have restrictions or require specific APN settings for third-party routers.
• Try updating your Deco firmware to the latest version via the Deco app, as firmware updates can improve stability and compatibility.

For more detailed troubleshooting, please refer to this FAQ: https://www.tp-link.com/en/support/faq/3371/

If you have completed these steps and the issue persists, please contact TP-Link support with the details of your troubleshooting so far, including your SIM card provider, Deco model, firmware version, and any error messages or behaviors you observe during the dropout.

Need help with the Deco app, setup, Ethernet backhaul, network switch or rolling back firmware? Router or AP mode? https://community.tp-link.com/us/home/forum/topic/699816?page=1