What might be causing the Wi-Fi connection to be weak and unstable on my Samsung Galaxy J4 (2018)?

There can be several factors that may cause a weak and unstable Wi-Fi connection on your Samsung Galaxy J4 (2018). Here are a few possibilities to consider:

Samsung Galaxy J4 (2018)

1. Distance from the router: The Wi-Fi signal strength decreases as you move farther away from the router. If you are too far from the router, it can result in a weak and unstable connection. Try moving closer to the router and see if the connection improves.
2. Obstacles and interference: Physical obstacles such as walls, furniture, or electronic devices can block or interfere with Wi-Fi signals, leading to a weaker connection. Make sure there are no objects obstructing the path between your device and the router. Additionally, other electronic devices operating on the same frequency, such as cordless phones or microwave ovens, can cause interference and affect the Wi-Fi signal.
3. Router issues: The problem may lie with the router itself. Restarting the router or performing a factory reset can sometimes resolve temporary issues. Also, ensure that the router firmware is up to date. Check if other devices connected to the same Wi-Fi network are experiencing similar problems. If so, it may indicate a router issue.
4. Wi-Fi channel congestion: If multiple Wi-Fi networks in your vicinity are using the same channel, it can lead to interference and a weaker connection. You can change the Wi-Fi channel on your router's settings to a less congested one. Most routers have an auto-select option for channels, which can help optimize the Wi-Fi connection.
5. Software or app-related issues: It's possible that a software glitch or a problematic app is causing the Wi-Fi instability on your device. Try restarting your Galaxy J4 and see if it improves the connection. You can also try running your device in safe mode to check if any third-party apps are causing the issue. If the problem persists, consider updating the device's firmware or performing a factory reset as a last resort.

If none of these steps resolve the problem, it may be worth contacting your internet service provider (ISP) or Samsung support for further assistance. They can provide specific troubleshooting steps or determine if there is a hardware issue with your device.