Few Android issues are as frustrating as tapping a Wi-Fi network, entering the correct password, and seeing the message “IP address configuration failure” or “Failed to obtain IP address.” Your phone can see the network, the signal looks strong, but it still refuses to connect. The good news is that this problem is usually caused by a temporary network conflict, a router glitch, or incorrect Android network settings—not a broken phone.
TLDR: An IP address configuration failure happens when your Android device cannot receive a valid IP address from the router. Start by toggling Wi-Fi, restarting your phone and router, then forgetting and reconnecting to the network. If that does not work, try setting a static IP address, resetting network settings, or checking your router’s DHCP configuration.
What Does “IP Address Configuration Failure” Mean?
Every device connected to a Wi-Fi network needs a unique IP address, which works like a digital home address. Your router usually assigns this address automatically using a feature called DHCP, or Dynamic Host Configuration Protocol. When your Android phone cannot get one, it gets stuck during the connection process.
This does not always mean your internet is down. Often, the router is working for other devices while one Android phone struggles to get assigned a valid address. Common causes include a stuck router, IP address conflicts, weak Wi-Fi signal, outdated settings, VPN interference, or a full DHCP address pool.
1. Toggle Wi-Fi and Airplane Mode
Start with the simplest fix. Swipe down from the top of your screen and turn Wi-Fi off. Wait about ten seconds, then turn it back on. If that does not help, enable Airplane Mode for 20–30 seconds, then disable it and try reconnecting.
This forces Android to refresh its wireless radios and request network details again. It sounds basic, but it often clears small connection problems without changing any settings.
2. Restart Your Android Device and Router
A restart is one of the most effective fixes because it clears temporary software glitches. Restart your Android phone first, then try joining the Wi-Fi network again. If the error remains, restart your router too.
To properly power cycle your router:
- Unplug the router from power.
- Wait at least 30 seconds.
- Plug it back in and wait for the lights to stabilize.
- Reconnect your Android device to Wi-Fi.
If multiple devices are having trouble connecting, the router is more likely to be the source of the issue.
3. Forget the Network and Reconnect
Your phone stores Wi-Fi details such as the password, security type, and network configuration. If this saved data becomes outdated or corrupted, Android may fail to obtain an IP address.
To forget and reconnect:
- Open Settings.
- Tap Network & Internet or Connections.
- Select Wi-Fi.
- Tap the problem network.
- Choose Forget.
- Select the network again and enter the password.
Be sure to type the password carefully. A wrong password can sometimes produce connection loops that look similar to IP configuration problems.
4. Move Closer to the Router
A weak or unstable signal can interrupt the IP assignment process. Even if the Wi-Fi icon shows one or two bars, the connection may not be strong enough to complete negotiation with the router.
Move closer to the router and try connecting again. If it works nearby but fails in another room, you may have a coverage issue. Thick walls, microwaves, Bluetooth devices, and neighboring Wi-Fi networks can all interfere with signal quality.
5. Set a Static IP Address
If DHCP is failing, assigning a static IP address can sometimes bypass the problem. This means you manually give your Android device an address instead of waiting for the router to assign one automatically.
Here is how to do it on most Android devices:
- Go to Settings > Wi-Fi.
- Tap your network or the settings icon beside it.
- Choose Advanced or IP settings.
- Change from DHCP to Static.
- Enter a valid IP address, gateway, and DNS details.
For example, if your router uses 192.168.1.1 as its gateway, you might use 192.168.1.50 as your phone’s IP address. The gateway would be 192.168.1.1, and the prefix length is usually 24. For DNS, you can use your router’s address or public DNS servers such as 8.8.8.8 and 1.1.1.1.
Important: Do not choose an IP address already used by another device. If two devices share the same IP, both may experience connection problems.
6. Check Your Router’s DHCP Settings
If your router’s DHCP server is disabled or has run out of available addresses, Android devices may fail to obtain an IP. This is more common in homes or offices with many phones, tablets, laptops, smart TVs, speakers, and security cameras.
Log in to your router’s admin page using a browser. The address is often printed on the router label and may look like 192.168.0.1 or 192.168.1.1. Look for settings named DHCP, LAN, or Address Pool.
Make sure:
- DHCP is enabled.
- The address pool has enough available addresses.
- No MAC address filtering is blocking your phone.
- The router firmware is up to date.
If you are not comfortable changing router settings, take a screenshot of the page before adjusting anything or contact your internet provider.
7. Disable VPN, Private DNS, or Security Apps Temporarily
VPN apps, firewalls, ad blockers, and custom DNS settings can occasionally interfere with network negotiation. While they usually affect internet access after connection, they can sometimes complicate Wi-Fi behavior on Android.
Temporarily disable any active VPN or security app and try connecting again. You can also check Private DNS by going to Settings > Network & Internet > Private DNS. Set it to Automatic or Off for testing.
8. Reset Network Settings
If nothing else works, reset Android’s network settings. This clears saved Wi-Fi networks, Bluetooth pairings, mobile network preferences, and related configuration data. It will not delete your photos, apps, or personal files.
On most devices, go to:
Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth
On Samsung devices, the path may be:
Settings > General management > Reset > Reset network settings
After the reset, reconnect to your Wi-Fi network and enter the password again. This is often effective when the problem is caused by corrupted Android network preferences.
9. Update Android and Router Firmware
Software bugs can affect wireless performance, especially after a major Android update or router configuration change. Check for Android updates under Settings > System > Software update. If an update is available, install it while connected to mobile data or another working Wi-Fi network.
You should also check your router manufacturer’s app or admin panel for firmware updates. Router updates often include stability improvements, security patches, and fixes for DHCP or Wi-Fi compatibility issues.
10. Test With Another Network
To find out whether the issue is with your phone or your router, try connecting your Android device to a different Wi-Fi network. You can test with a friend’s Wi-Fi, a mobile hotspot, or a public network.
If your phone connects elsewhere, your home router or its settings are probably the problem. If it fails on every Wi-Fi network, Android settings, installed apps, or hardware may be responsible.
When to Contact Support
If you have tried restarting devices, forgetting the network, using a static IP, resetting network settings, and updating software, it may be time to contact your internet provider or device manufacturer. Your router may need replacement, or your phone’s Wi-Fi hardware may require inspection.
In most cases, however, IP address configuration failure on Android is fixable within a few minutes. Begin with the quick steps, move gradually toward advanced settings, and avoid changing router options randomly. A careful, step-by-step approach will usually get your Android device back online without unnecessary frustration.