Many users are familiar with the situation where a smartphone finds your home network, accepts the password, but then gets stuck on the "Obtaining IP Address" status forever. The screen flickers, the rotation indicator spins, but the connection is never established. This means that physical contact exists between the devices, but logical data exchange is blocked. DHCP protocol, which is responsible for automatically issuing addresses, for some reason cannot assign a unique identifier to your gadget on the local network.
Most often, the problem lies not in a hardware failure, but in a software conflict or an overflow of the router's address table. Router It simply "forgets" who it's already assigned an address to, or its memory is overflowing with requests. Sometimes the culprit is the phone itself, which stores erroneous network configurations. In rare cases, updated security standards or conflicting MAC filters are the cause.
Don't panic and take your equipment to a service center. In 90% of cases, restoring functionality takes less than 10 minutes. You'll just need to carefully rule out software failures, from a simple reboot to manually configuring network settings. Let's look at the main causes and troubleshooting methods.
Rebooting your router and smartphone: the classics still work.
The first thing to do if your phone displays "Obtaining IP address" and won't connect is to perform a full hardware reboot. Many people ignore this step, considering it trivial, but it actually solves the problem in half the cases. Router — is a mini-computer that also has RAM and a processor. Over time, errors accumulate in the buffer, the cache overflows, and the DHCP service stops responding correctly to requests for new devices.
Unplug the router completely. Don't just press the power button, unplug the power cord. Wait at least 30-60 seconds. This time is necessary for the capacitors to discharge and the RAM to completely clear any temporary data. At the same time, reboot the router itself. smartphoneAfter turning on both devices, try connecting again.
If the status changes to "Connected" after the reboot, the issue was temporary. If the cycle repeats, the problem is deeper. The router may be running too many background processes, or it may be overheating. In this case, check the device's ventilation and ensure it's not in direct sunlight or near heating devices.
Forget the network and clear the network settings cache
Often, a phone can't obtain an IP address because it's trying to use old, saved settings that are no longer relevant for the current network configuration. For example, you changed the password or encryption type, but the old profile with incorrect data remains in the phone's memory. To fix this, you need to delete the network from the list of saved settings.
Go to your device's WiFi settings. Find your network name, tap it, and select "Delete" or "Forget this network." This will completely clear all security keys and IP settings associated with this SSID. Try connecting again using the password. This will force the device to request a new address lease from the router.
☑️ What to do when resetting your network
If deleting the profile doesn't help, you should try a more radical method: resetting the phone's network settings. This will reset all communication modules to factory settings: WiFi, Bluetooth, and mobile network. Your personal files, photos, and apps will remain, but all saved WiFi passwords will be deleted. On Android, this is usually located in the "Settings" section. System → Reset settings → Reset network settingsOn iOS, the path looks like this: General → Transfer or reset iPhone → Reset → Reset network settings.
This method is especially effective if the problem isn't specific to one network, but rather if the phone has poor WiFi reception or constantly loses connection. A reset clears the system routing tables within the operating system, eliminating software conflicts.
⚠️ Attention: After resetting your network settings, you will have to re-enter passwords for all WiFi networks you previously connected to, as well as re-pair any Bluetooth devices, such as watches or headphones.
Manually setting a static IP address
If automatic address assignment (DHCP) isn't working, you can try bypassing the system and manually entering the address. This often helps when the router's address pool is limited or the DHCP service is unstable. You'll need to go to the advanced settings for your WiFi network connection.
In the list of available networks, click on your network name (or the gear/arrow icon next to it). Find "IP Settings" or "IPv4 Settings." By default, it's set to "DHCP." Change it to "Static" (Static). After this, fields for manual input will open.
What IP address should I enter?
Typically, you need to enter an address similar to your router's address, but with a different last digit. If your router's address is 192.168.0.1, then you can enter 192.168.0.150 for your phone. Set the gateway and DNS to the router's address.
Fill in the fields with the following data (example for a standard network):
- 📍 IP address: 192.168.1.128 (the last digit can be changed from 2 to 254)
- 🚪 Gateway: 192.168.1.1 (your router's address)
- 📏 Network prefix length: 24
- 🌐 DNS 1: 8.8.8.8 (or router address)
After saving the settings, the phone will attempt to connect using the specified address. If the connection is successful, the problem lies with the dynamic allocation protocol. You can now safely use the internet. If the connection fails even with the static address, the blocking is occurring at the router level or the WiFi module driver.
MAC filtering conflict and DHCP pool overflow
One of the hidden reasons why a phone freezes while obtaining an IP address is enabled MAC address filtering on the router. Each network interface has a unique identifier— MAC addressIf the router settings are set to "Allow List," only devices whose addresses have been manually added to the database will be able to connect. All other devices will remain in the "connecting" or "obtaining IP" state indefinitely.
You can only check this through the router's web interface. Go to the wireless network settings and find the MAC Filter or Access Control section. If the filter is enabled, you need to find your phone's MAC address (it's listed in the section). About phone → Status or in the WiFi connection properties) and add it to the list of allowed ones.
⚠️ Attention: Modern Android (version 10 and later) and iOS (version 14 and later) use the "Random MAC Address" feature by default to enhance privacy. This means your phone presents itself to the router under a different name each time. If you have filtering enabled, enable "Use device MAC address" instead of "Random MAC Address" in the WiFi settings for your specific network.
The second reason in this section is DHCP pool overflow. The router assigns addresses from a specific range, for example, from 192.168.1.2 to 192.168.1.100. That's a total of 99 addresses. If you have a smart home with dozens of light bulbs, cameras, guest phones, and laptops, the limit may be exhausted. A new device simply has nothing to assign.
The solution is to increase the address range in the LAN router settings. Go to DHCP Server and expand the pool's final address, for example, to 192.168.1.250. You can also reduce the lease time. If an address is leased for 7 days, it will remain occupied even if the device leaves. Reducing the lease time to 2 hours will release addresses faster.
WiFi Bandwidth and Channel Issues
Modern routers often operate in two bands: 2.4 GHz and 5 GHz. Older or budget phones may not work correctly with the 5 GHz band, especially if compatibility mode is enabled or non-standard channels are used. If your phone attempts to obtain an IP address in the 5 GHz band and fails, try switching to 2.4 GHz.
Airwave congestion could also be the cause. If your router and your neighbors' routers are on the same channel, collisions occur. Data packets are lost, and the handshake process is interrupted at the IP stage. Try changing the channel in your router settings from "Auto" to a fixed channel (e.g., 1, 6, or 11 for 2.4 GHz).
Particular attention should be paid to the channel width. For the 2.4 GHz band, the width 40 MHz often causes instability in apartment buildings. Force the channel width 20 MHzThis will reduce the maximum speed, but will dramatically increase the stability of the connection and the likelihood of successfully obtaining an IP address.
Comparison of error troubleshooting methods
To systematize our knowledge, let's summarize the main methods for solving this problem in a single table. This will help you quickly choose a strategy based on your symptoms and the time available.
| Solution method | Complexity | Efficiency | Risk of data loss |
|---|---|---|---|
| Rebooting the router | Low | High (60%) | No |
| Forget the network | Low | Average (20%) | WiFi password only |
| Static IP | Average | High (80%) | No |
| Reset network settings | High | Very high (90%) | Passwords for all networks, Bluetooth |
| Router setup (channels/MAC) | High | Depends on the reason | No (unless you reset the router) |
As the table shows, it's always best to start with simple methods. Only resort to complex router settings or a full phone reset if the basic steps fail. Remember that changing router settings can affect all devices in your home, not just your phone.
Frequently Asked Questions (FAQ)
Why do other devices connect but my phone says "Obtaining IP"?
This indicates a specific issue with your device. Most likely, your phone's network settings are incorrect, it has a static IP address from a different subnet, a randomized MAC address is enabled and is being blocked by the router, or the Android/iOS network service cache is full.
Can an antivirus block obtaining an IP address?
Yes, some aggressive firewall settings in third-party antiviruses or "internet speed booster" apps can block DHCP requests. Try temporarily disabling your antivirus or internet speed booster and test your connection.
What if a static IP doesn't help either?
If even manually entering the IP address doesn't help, the problem may be with the phone's WiFi driver (hardware failure or a deep software conflict) or a physical fault in the router. Try connecting your phone to a different WiFi network (for example, a friend's). If everything works there, replace or update the router's firmware.
Does date and time affect WiFi connection?
Indirectly, yes. If the date on your phone is significantly off (for example, set to 2010), errors may occur when verifying security certificates, which can sometimes interrupt the connection process early on. Make sure the "Auto Date and Time" option is enabled.