Seeing “IP configuration failure” on an Android phone can be frustrating, especially when every other device seems to connect to the same Wi-Fi network without trouble. This error usually means your phone reached the router but could not get a valid IP address, which is needed before it can access the internet. The good news is that the issue is often temporary and can usually be fixed with a few simple checks.
TLDR: Android IP configuration failure usually happens when your phone cannot receive a valid IP address from the router. Start by restarting your phone and router, then forget and reconnect to the Wi-Fi network. If that fails, try assigning a static IP address, checking router settings, or resetting Android network settings.
What Does “IP Configuration Failure” Mean?
Every device on a Wi-Fi network needs an IP address, which works like a local mailing address. Your router normally assigns this address automatically using a system called DHCP, or Dynamic Host Configuration Protocol. When Android displays an IP configuration failure, it means the phone tried to connect but did not receive a usable IP address.
This can happen because of a router glitch, weak signal, incorrect network settings, a crowded DHCP address pool, or a conflict with another device. Sometimes the problem is not your phone at all; the router may simply be confused and need a refresh.
1. Restart Your Phone and Router
The simplest fix is also one of the most effective. Restarting clears temporary bugs, refreshes network services, and gives your router another chance to assign an IP address correctly.
- Restart your Android phone: Hold the power button and choose Restart, if available.
- Restart your router: Unplug it from power, wait 30 seconds, then plug it back in.
- Wait before reconnecting: Give the router two to three minutes to fully boot up.
After both devices restart, try connecting to the Wi-Fi network again. If the error was caused by a temporary communication problem, this may solve it immediately.
2. Forget the Wi-Fi Network and Reconnect
Your phone saves Wi-Fi details such as the password, security type, and connection preferences. If those saved settings become outdated or corrupted, Android may fail while requesting an IP address.
- Open Settings on your Android device.
- Go to Network and Internet or Connections.
- Tap Wi-Fi.
- Select the problem network.
- Tap Forget.
- Reconnect by choosing the network and entering the password again.
This creates a fresh connection profile and often clears the IP configuration failure.
3. Check the Wi-Fi Password and Signal Strength
It may sound obvious, but an incorrect password or unstable signal can cause strange connection behavior. Android may appear to connect briefly, then fail during IP assignment.
Move closer to the router and try again. If you are far away, behind thick walls, or near interference from microwaves, cordless phones, or Bluetooth devices, the connection may be too weak to complete setup. Also confirm that the Wi-Fi password has not been changed recently.
4. Toggle Airplane Mode
Airplane Mode turns off wireless radios, including Wi-Fi and mobile data. Switching it on and off forces Android to reload its network components without a full restart.
- Swipe down from the top of the screen to open Quick Settings.
- Tap Airplane Mode and wait about 10 seconds.
- Turn Airplane Mode off.
- Reconnect to Wi-Fi.
This quick reset can fix minor software hiccups that interfere with Wi-Fi negotiation.
5. Assign a Static IP Address
If your router is failing to assign an IP address automatically, you can manually set one on your Android device. This is called using a static IP address. It is a little more technical, but it can be very effective.
To set a static IP address:
- Open Settings and go to Wi-Fi.
- Tap the network you want to connect to.
- Choose Advanced options or edit the network settings.
- Change IP settings from DHCP to Static.
- Enter an IP address, gateway, and DNS details.
A common home router setup uses addresses like 192.168.1.x or 192.168.0.x. For example, if your router address is 192.168.1.1, you might try an IP address such as 192.168.1.50. The gateway is usually your router’s address. For DNS, you can use your router address or public DNS servers such as 8.8.8.8 and 1.1.1.1.
Important: Avoid choosing an IP address already used by another device. If two devices share the same IP, connection problems may get worse.
6. Check Router DHCP Settings
If multiple devices are having trouble, the router may be the real cause. Log in to your router’s admin page and check whether DHCP is enabled. Without DHCP, the router will not automatically hand out IP addresses.
You should also check the DHCP address range. Some routers are configured to allow only a small number of devices. If the range is full, new devices may fail to receive an address. Expanding the DHCP pool can solve the problem, especially in homes with many phones, laptops, TVs, smart speakers, and security cameras.
7. Disable MAC Filtering
Some routers use MAC address filtering, which allows or blocks devices based on their unique hardware address. If your Android phone is not on the allowed list, the router may reject it or prevent it from completing IP configuration.
Log in to your router and look for settings such as Access Control, MAC Filtering, or Device Management. Either disable filtering temporarily or add your phone’s MAC address to the allowed list.
8. Reset Android Network Settings
If nothing else works, reset the network settings on your Android device. This removes saved Wi-Fi networks, Bluetooth pairings, and mobile network preferences, so use it after simpler fixes have failed.
- Open Settings.
- Go to System or General management.
- Tap Reset.
- Select Reset network settings.
- Confirm the reset and reconnect to Wi-Fi.
This gives Android a clean network configuration and can resolve deeper setting conflicts.
9. Update Your Phone and Router Firmware
Software bugs can affect Wi-Fi performance. Make sure your Android device is running the latest available system update. Go to Settings, then System update or Software update, depending on your device.
Your router may also need a firmware update. Router updates can improve stability, security, and compatibility with newer phones. Check the router manufacturer’s app or admin page for update options.
When to Contact Your Internet Provider
If your phone fails on one specific network but works everywhere else, the router or internet provider may need attention. Contact your provider if you cannot access router settings, if DHCP appears broken, or if all devices are struggling to connect. They may remotely refresh the router, replace faulty equipment, or correct configuration problems.
Final Thoughts
An Android IP configuration failure sounds technical, but it usually comes down to a simple breakdown between your phone and router. Start with easy fixes like restarting devices, forgetting the network, and moving closer to the router. If the problem continues, static IP settings, DHCP checks, and network resets provide stronger solutions. With a little patience, you can usually get your Android device back online without replacing your phone or router.