This Article Applies to:

All 4G LTE Routers

Issue Description/Phenomenon:

Some customers might experience interruptions or disconnections with their 4G LTE routers, their phones or laptops can connect to the router wireless network fine, while they display a 'No internet' error, and customers cannot access the internet. This article aims to provide suggestions on the issue.

Troubleshooting Suggestions:

1. When it loses the internet access, please check if you can still login to the router web GUI, then show us the Internet Status, SIM Card Status as follows. Compare the Network Type and Band, if they are the same as those when the internet is working fine:

2. If the band was changing to a different one when the internet interrupts, please follow the guide below to manually select a band that works in your network

How to select 4G band manually on the web interface of LTE Gateway Routers

If your LTE router doesn't support manual band selection, you could get the beta firmware from this thread:

https://community.tp-link.com/en/home/forum/topic/241534

3. If the problem still exists, please insert the same SIM into another LTE device or even a smartphone, then monitor for some time to confirm if the internet works fine and is stable.

4. If the 4G signal in your area is strong and stable, please try to change the Network Type on Advanced->Network->Internet page from 4G Preferred to 4G Only to see if it would be more stable.

If the issue is not located or resolved, please comment below on this topic and be sure to provide the following information:

- Model no. , hardware, and firmware version of your TP-Link device

- Working mode of the router, like 3G/4G router mode or wireless router mode

- Where are you based, and who is your SIM card carrier?

- Screenshots of Advanced->Status page and Advanced->Network->Internet page when the internet works fine and also when the internet stops

- System Log file without rebooting the router

- How often does the problem happen, and how does it recover?

- When did you purchase the router, and when did the issue start to happen? 

- Is the same SIM card working fine and stable on other 4G devices?