Few Android Wi-Fi errors are as frustrating as “IP configuration failure”. Your phone sees the network, accepts the password, and then gets stuck while trying to obtain an IP address. In simple terms, your device and router are failing to agree on a local address, which means Android cannot properly join the network or access the internet.
TLDR: IP configuration failure on Android usually happens when the router fails to assign your phone a valid IP address. Start with quick fixes like restarting your phone and router, forgetting the Wi-Fi network, and toggling Airplane Mode. If that does not work, try setting a static IP, checking router DHCP settings, or resetting Android network settings. In most cases, one of these steps restores the connection without needing a factory reset.
Why Android Shows “IP Configuration Failure”
When your Android device connects to Wi-Fi, your router normally assigns it an IP address using a system called DHCP. If DHCP fails, your phone may display messages such as “Obtaining IP address,” “IP configuration failure,” or “Failed to obtain IP address.”
This can happen because of a temporary router glitch, a saved network conflict, incorrect security settings, limited DHCP address availability, or a software issue on the phone. The good news is that the problem is usually fixable in a few minutes.
1. Restart Your Android Device and Router
It sounds basic, but restarting both devices is often the fastest fix. Routers can temporarily stop assigning IP addresses correctly, especially if many devices have connected over time. Your phone can also hold on to stale network data that prevents a clean connection.
- Turn off Wi-Fi on your Android device.
- Restart your phone.
- Unplug your router from power for about 30 seconds.
- Plug the router back in and wait until it fully reconnects.
- Turn Wi-Fi on again and reconnect.
If the issue was caused by a temporary DHCP or caching problem, this simple reset may solve it immediately.
2. Forget the Wi-Fi Network and Reconnect
Android stores network details such as password, security type, and IP settings. If that saved profile becomes outdated or corrupted, your phone may fail during IP assignment.
To refresh it, go to Settings > Network & Internet > Internet or Wi-Fi, depending on your Android version. Tap the problem network, choose Forget, then reconnect by entering the Wi-Fi password again.
This forces Android to create a fresh connection profile. It is especially useful if the router password, encryption mode, or network configuration was recently changed.
3. Toggle Airplane Mode
Airplane Mode quickly disables and re-enables wireless radios, including Wi-Fi and mobile connectivity. This can clear minor connection conflicts without a full reboot.
- Swipe down from the top of the screen to open Quick Settings.
- Tap Airplane Mode.
- Wait around 10 to 15 seconds.
- Turn Airplane Mode off.
- Reconnect to the Wi-Fi network.
This is a quick step worth trying before moving into more advanced settings.
4. Assign a Static IP Address
If the router is not assigning an IP automatically, you can manually give your Android device a static IP. This bypasses the DHCP process and can resolve persistent IP configuration failure.
Open your Wi-Fi network details, tap Edit or the pencil icon, then look for Advanced options. Change IP settings from DHCP to Static.
You will need to enter values such as:
- IP address: Use an address in your router’s range, such as 192.168.1.50 or 192.168.0.50.
- Gateway: Usually your router address, such as 192.168.1.1 or 192.168.0.1.
- DNS: You can use 8.8.8.8 and 8.8.4.4 for Google DNS, or 1.1.1.1 for Cloudflare.
Important: Avoid choosing an IP address already used by another device. If two devices share the same address, you may create a new connection problem.
5. Check Router DHCP Settings
If several devices are having trouble connecting, the issue may be on the router rather than your phone. Log in to your router’s admin panel and check whether DHCP is enabled. If DHCP is disabled, your router will not automatically assign IP addresses.
Also check the DHCP address pool. For example, if the router only allows addresses from 192.168.1.100 to 192.168.1.110, only a limited number of devices can connect. Expanding the range may fix the issue, especially in homes with many phones, tablets, smart TVs, cameras, and laptops.
If you are unsure how to access the router settings, look for the router’s local address on a label or in the manual. Common addresses include 192.168.0.1 and 192.168.1.1.
6. Change Wi-Fi Security or Band Settings
Some Android devices can struggle with certain router security modes or frequency bands. If your router uses an unusual or older configuration, it may cause connection failures.
In your router settings, check the Wi-Fi security mode. For most users, WPA2-Personal or WPA2/WPA3 mixed mode works best. Avoid outdated options such as WEP, which is both insecure and poorly supported by modern devices.
You can also try switching between 2.4 GHz and 5 GHz. The 2.4 GHz band has better range, while 5 GHz is usually faster but less effective through walls. If your router combines both bands under one network name, consider separating them temporarily to test which one works better.
7. Reset Network Settings on Android
If your phone has incorrect or corrupted network configuration, resetting network settings can help. This does not erase your photos, apps, or personal files, but it will remove saved Wi-Fi networks, Bluetooth pairings, and mobile network preferences.
To do this, go to Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth. On some devices, the path may be slightly different, such as General management > Reset > Reset network settings.
After the reset, reconnect to your Wi-Fi network and enter the password again. This is one of the most reliable fixes when the problem appears only on one Android device.
8. Update Android and Router Firmware
Software bugs can interfere with Wi-Fi connectivity. If your device is running an outdated Android version, install any available system updates. Go to Settings > System > System update and check for updates.
Your router also has firmware, and outdated firmware can cause DHCP bugs, security issues, and device compatibility problems. Router firmware updates are usually available through the router’s admin dashboard or the manufacturer’s app.
If the problem started after a recent Android update, check online forums or your device manufacturer’s support pages. Sometimes a patch is released to fix Wi-Fi issues affecting specific models.
Extra Checks If Nothing Works
If all eight solutions fail, try connecting your Android device to a different Wi-Fi network. If it connects elsewhere, your home router is likely the problem. If it fails on every network, the issue may be with the phone’s software or hardware.
You can also test whether other devices connect to the same Wi-Fi. If no device can connect, restart or reset the router. If only your Android phone fails, focus on Android settings, updates, or professional support.
Final Thoughts
IP configuration failure on Android is usually not a sign of serious damage. Most of the time, it is a communication problem between your phone and router during IP assignment. Start with the simplest fixes, then move toward static IP settings, router DHCP checks, and network resets.
With a systematic approach, you can usually restore Wi-Fi access quickly and avoid unnecessary factory resets. The key is to determine whether the fault is with the Android device, the saved network profile, or the router handing out addresses.