The situation when the smartphone is based Android The "Obtaining IP Address" stage is a familiar problem for many users. Instead of the usual connection and internet access, the device freezes and, after a while, displays a connection error. This means there's physical contact with the router, but logical address assignment isn't occurring. DHCP protocol, which is responsible for automatically issuing unique identifiers to each gadget, for some reason does not work or is blocked.
This behavior can be caused by a software glitch in the phone itself or by the router's address pool being full. A simple reboot often resolves the issue, but more complex cases require tweaking the network settings. Don't panic: in most cases, network stack is working properly, and the situation can be corrected without reflashing the device or purchasing new equipment.
In this article, we'll take a detailed look at the steps you can take to restore access to your local network and internet. We'll cover methods ranging from a simple reset to manually setting a static address. Understanding how MAC address your device and the router rental table will help prevent the problem from recurring in the future.
Basic diagnostics and initial reset
Before delving into complex technical settings, it is necessary to rule out basic software glitches. Often DHCP server The router simply freezes and stops responding to new client requests. First, try completely rebooting the router by unplugging it for 10-15 seconds. This will forcefully clear the router's RAM and restart the services.
You should also reset the network settings on your smartphone. Go to the menu Settings → System → Reset settings (the path may differ depending on the model Samsung, Xiaomi or Huawei). Select the "Reset Wi-Fi, mobile data, and Bluetooth settings" option. This will delete saved passwords but will also clear any configuration file conflicts that may have accumulated over time.
☑️ Primary network diagnostics
If the problem persists after rebooting all devices, check if other devices can connect to the same access point. If the internet works on your laptop or tablet, then the problem is localized to your phone. In this case, you should check static IP, which may have been previously set for this network.
Manually setting an IP address on Android
When automatic address acquisition is not possible, the most effective solution is to manually enter the parameters. Go to the WiFi settings, click on your network name, and select "Edit" or "Advanced." In the "IP Settings" field, change the value from DHCP on Static (Static).
Here you will need to enter the data manually. Usually the gateway (router) has an address 192.168.0.1 or 192.168.1.1You need to specify an IP address for a phone that is in the same subnet but not the same as the router's address. For example, if the gateway 192.168.1.1, then the phone can be assigned 192.168.1.150The subnet mask is most often left at its default value: 255.255.255.0.
What is DNS and why change it?
DNS (Domain Name System) is the internet's phone book, translating human-readable addresses (like google.com) into numeric IP addresses. If your provider's default DNS is slow or failing, replacing it with a public DNS (like Google's 8.8.8.8 or Cloudflare's 1.1.1.1) can speed up page loading and resolve connection issues with some apps.
In the DNS 1 and DNS 2 fields you can enter the addresses of public servers, such as 8.8.8.8 And 8.8.4.4 from Google. This often helps if your ISP blocks or incorrectly processes DNS requests. After entering all the information, save your profile and try connecting again. Static IP eliminates the need to wait for a response from the router's DHCP server.
⚠️ Important: When choosing a static address, make sure it's not already occupied by another device on the network. If you have many devices on your home network, it's best to choose addresses in the higher range (e.g., 200 to 254) to avoid IP address conflicts, which could result in connection loss for both devices.
Problems with MAC filtering and private address
Starting from Android 10, the system now uses a random MAC address for each WiFi network. This increases privacy, but older routers or strict security settings may block such connections. If the router is configured to filter by MAC address, it simply won't give out an IP to an unknown device.
To fix this, go to your WiFi settings, select your network, and find "Privacy" or "MAC Address Type." Change the value from "Random MAC" to "Device MAC Address." This will force your phone to use its real, unchanging identifier, which may already be whitelisted by the router or simply handled correctly by its firmware.
It's also worth checking the router's settings. Log into the admin panel (usually at 192.168.0.1) and find the "Wireless" or "Security" section. Make sure that strict filtering is not enabled there. MAC filter, which blocks all new devices. If this feature is active, you need to either disable it or add your phone's MAC address to the list of allowed devices.
DHCP settings on the router side
If the problem occurs on all devices or intermittently, the router's address pool may be full. In the router settings (section LAN → DHCP Server) specifies the range of addresses it can distribute. If the range is too small (for example, only 10 addresses), and there are more devices in the house, there simply won't be enough "numbers" for new gadgets.
Expand the address pool. For example, set the starting address 192.168.1.100 and final 192.168.1.250This will allow you to connect up to 150 devices simultaneously. Also, check the lease time. If it's set too long (e.g., a week) and devices change frequently, the ARP table may become full, and the router will stop issuing new IP addresses.
td>192.168.1.250
| Parameter | Recommended value | Description |
|---|---|---|
| Start IP Address | 192.168.1.100 | The first address in the pool of distributed IPs |
| End IP Address | The last address that maximizes the number of customers | |
| Lease Time | 120 minutes (or 1440 min) | The time for which the address is issued to the device |
| Gateway | 192.168.1.1 | The address of the router (gateway) itself |
Don't forget to save your settings and reboot your router after changing DHCP parameters. Some router models (e.g., TP-Link, Asus, Keenetic) the interface may differ, but the logic remains the same: the address pool must be sufficient, and the lease time must be adequate for the usage scenarios.
Resetting the network and deleting profiles
Sometimes in the operating system Android Errors accumulate in the network service cache. Even if you've changed your password or router settings, your phone may attempt to apply old, conflicting settings. Completely deleting the network profile may help. Go to the list of WiFi networks and tap "Forget" on the problematic network.
After this, it is recommended to turn on the airplane mode (Airplane Mode) for 10 seconds, then turn it off. This will reboot the radio module. When you reconnect, the system will prompt you for a password again and create a new configuration file without the old errors. If this doesn't help, you can try a more radical method—resetting all settings to factory defaults—but this is a last resort.
⚠️ Note: Resetting network settings will delete all saved WiFi passwords, Bluetooth device pairings, and mobile data settings. Make sure you remember the passwords for important networks before performing this operation.
Smartphone owners with rights Root You can try clearing the system network configuration files manually using a file manager with access to system folders by deleting files in the directory /data/misc/wifi/However, this method is not recommended for regular users due to the risk of damaging the system.
Influence of frequency ranges and channel width
Problems obtaining an IP address often arise in congested airwaves. If your router broadcasts a 2.4 GHz signal with a 40 MHz channel width in an apartment building, the interference can be so strong that packets DHCP requests are lost. The phone sends a request, but the response from the router doesn't arrive due to interference.
Try changing your router's wireless settings. Switch the channel from "Auto" to a fixed channel (1, 6, or 11), which is the least congested. You can also try reducing the channel width to 20 MHz. This will reduce the maximum speed, but will significantly improve connection stability and the likelihood of successfully obtaining an IP address.
If your router is dual-band, try connecting your phone to the 5 GHz network. This band is less noisy, and data protocols are more stable there. However, keep in mind that 5 GHz has a shorter range, and the signal may be lost through thick walls, which can also lead to connection errors.
Frequently Asked Questions (FAQ)
Why does the phone keep saying "Obtaining IP address" and then turn off?
This is a classic sign that the router's DHCP server is unresponsive or has blocked your device. Possible causes include: the address pool is full, MAC address filtering is enabled, or there's a problem with the phone's WiFi driver. Try setting a static IP.
Can an antivirus block obtaining an IP address?
Yes, some aggressive firewall settings in third-party antiviruses or VPN applications can block system DHCP requests. Try temporarily disabling your antivirus or VPN and testing the connection.
What if static IP doesn't work either?
If even manually entering the IP address doesn't help, the problem may be deeper: a faulty WiFi module in the phone, complete incompatibility of encryption standards (for example, an old phone and the new WPA3 standard), or a physical failure of the router antenna.
Does the date and time affect WiFi connection?
Yes, an incorrect date and time can cause security certificate errors, which can prevent the handshake from successfully completing upon connection and prevent the IP address from being assigned. Check if automatic time synchronization is enabled.
How do I know if my phone is blocked by my provider?
ISPs rarely block individual phones by MAC address without the owner's knowledge. Most likely, the problem is local. However, if you're using a PPPoE connection, make sure your router is properly configured for internet access, not just local network access.