Fixing Router and Mobile Hotspot Conflicts > 자유게시판

When you're using a mobile hotspot to connect your devices to the internet you might notice that your home router stops working properly. This is often due to dual-router network clashes. These conflicts happen because both devices are trying to manage network traffic. Sometimes they end up using identical subnet ranges, which causes connection instability.

Begin troubleshooting by inspecting your LAN settings. Look at the IP address range your router is using. Most home routers default to 192.168.2.x. Now check the subnet your phone is assigning when it acts as a hotspot. Many mobile carriers use the same ranges, which causes routing ambiguity. If both devices are using the same range, HackMD your devices can't tell how to route packets, leading to dropped connections.

Shut down the mobile hotspot and observe network behavior. If it does, the problem is triggered by the hotspot. Now reconnect the tether and check if any devices on your home network can no longer connect. Sometimes your phone will assign itself an overlapping default route, causing DHCP exhaustion. You can check this by reviewing network status in Settings. Look for messages about failed DHCP lease.

Another common issue is double NAT. This occurs when your mobile tether acts as a router and your router is in router mode. This double layer can reduce throughput and block VoIP services that rely on direct connections. To fix this, you can try flashing firmware to bypass routing. This turns your router into a simple network switch and lets your phone handle DHCP duties. Alternatively, you can use the phone as your primary access point, though this may drain your phone’s battery faster.

Review your hotspot’s advanced settings. Some phones allow you to change the hotspot's IP range. If you're using a a crowded channel on your router, and your phone is using the same band, interference can occur. Try switching your router to a less congested frequency. You can use a channel detection software to see which bands are overloaded.

Power cycle both devices. Sometimes a power cycle clears up kernel-level routing errors. After restarting, rejoin each gadget sequentially and test stability. If the problem returns after re-enabling tethering, you've confirmed the conflict. The best long term solution is to change your router’s subnet to a non-standard range. Try using 172.16.x.x, so it no longer overlaps with your phone's default range. This way, you avoid recurring IP collisions.