Every wireless network user is familiar with the situation where a smartphone endlessly spins the loading wheel or displays the "Obtaining IP address" status. Instead of the expected internet access, the device gets stuck at the local network identification stage, making it impossible to surf or use apps. DHCP protocol, which is responsible for automatically issuing network addresses, at this moment for some reason ignores your gadget's request or cannot respond to it.
The reasons for this behavior may lie in a software failure of the device itself Android or iOS, as well as router overload. Often, a simple reboot solves the problem, but in some cases, manual network settings or modifications to the router configuration are required. In 90% of cases, the problem is solved by switching IP settings from DHCP to Static, which is the most effective method to bypass the error.
In this article, we'll cover all the technical details that can interfere with connection establishment. You'll learn how to diagnose address conflicts, clear network service caches, and properly configure a static IP address to eliminate connection freezes once and for all.
The main reasons for network authorization failure
The fundamental cause of the error lies in a disruption in the handshake process between the client and the access point. When you select a network and enter the password, the device goes through an authentication process and then requests a unique identifier from the router. If the router is overloaded or its DHCP service is frozen, the request goes unanswered, and the phone enters an endless waiting loop.
Another common scenario is an IP address conflict. No two devices on a local network can share the same address. If your phone attempts to use an address that's already active on another device or reserved by the system, the router will reject the connection to preserve network integrity. It's also worth considering the router's limitations: budget models often have a limit on the number of simultaneously connected clients.
Software glitches in the phone's operating system shouldn't be discounted either. Updating the firmware, installing heavy antivirus software, or installing VPN clients can cause network modules to malfunction. In such cases, the system simply "forgets" how to correctly request an address or blocks the server's response, considering it suspicious.
Basic diagnostics and hardware reboot
Before delving into the intricacies of settings, it's important to rule out temporary hardware failures. Routers, like computers, have RAM and a processor that can overheat or become overwhelmed with cache errors. Extended operation without powering down can lead to the accumulation of logical errors in the ARP table and DHCP leases.
The first step is to perform a cold boot of the router. Don't just press the power button; unplug the device completely for 15-20 seconds. This will clear the buffer and force a restart of all network services. While the router is booting, it's a good idea to reboot your smartphone as well.
☑️ Primary network diagnostics
If the issue persists after a reboot, try the "Forget Network" feature on your phone. This deletes the saved connection profile, including cached encryption keys and old IP addresses. Then connect again, carefully entering the password.
⚠️ Attention: If you have many smart home devices (light bulbs, outlets, cameras) on your network, rebooting your router can cause them to connect erratically, creating a flood of requests. In such cases, it's best to reboot the router while the smart devices are turned off, or to do it in stages.
Setting up a static IP address on Android
The most effective way to bypass the "Obtaining IP Address" error is to manually assign a static address. Instead of waiting for a response from the DHCP server, you tell the phone which address to use. This eliminates the waiting period and often resolves the issue immediately.
To do this, go to your WiFi settings, tap the gear icon or long-press your finger on your network name and select "Edit" or "Advanced." Find "IP Settings" and toggle it off. DHCP on Static (Static). Fields for manual data entry will open.
In the "IP Address" field, you must enter a unique address within your subnet. Routers typically use addresses like 192.168.1.1 or 192.168.0.1Your phone needs to be given an address from the same range, but with the last digit from 2 to 254, for example, 192.168.1.128It is important to choose a number that is not occupied by other devices.
How to find out the gateway and network prefix?
The gateway (router) is usually the first address on the network, such as 192.168.1.1. The network prefix length for home routers is almost always 24. This information is often automatically entered when switching to a static IP.
The remaining fields, such as “Network Prefix Length” (usually 24) and “DNS”, can be left as default or specified using Google’s public servers (8.8.8.8). After saving the settings, the phone will attempt to connect, bypassing the request to the DHCP server.
Troubleshooting for iPhone and iPad (iOS)
In the operating system iOS The solution logic is similar, but the settings interface differs. Apple also allows you to manually enter network parameters if automatic address acquisition fails. This is especially relevant for iPhones, which are sometimes sensitive to router security settings.
Go to Settings → Wi-Fi, click the blue information icon (the letter "i" in a circle) next to your network. Scroll down to the "IP Configuration" section and switch the mode from "Automatic" to "Manual." Here you will also need to enter the IP address, subnet mask, and router.
For the subnet mask, the default value is 255.255.255.0The router's address must match your network's gateway address. If you haven't changed your router settings, this is most likely the case. 192.168.1.1 or 192.168.0.1. You can specify the same DNS servers as for Android.
If manual entry doesn't help, try resetting your network settings completely. This will delete all saved WiFi passwords and cellular settings, returning your network stack to its factory defaults. Here's how to reset: Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
Router Settings: DHCP and Address Pool
If the problem occurs on all devices in the house, the router itself is the cause. The DHCP server settings may be set to a too small range (pool) of allocated addresses. For example, if the range is set from 192.168.1.100 to 192.168.1.105, only six devices will be able to connect at a time.
To access these settings, you need to log into the router's web interface via a browser. Enter the gateway address (indicated on the sticker on the bottom of the router) and enter the administrator login/password. Find the section LAN or DHCP Server.
Expand the address range. The starting address can be left as is. 192.168.1.100, and change the final one to 192.168.1.200 or even 250This will increase the number of available "slots" for gadgets. Also, check the address lease time (Lease Time). If it's set to several minutes, devices will constantly reconnect, creating a load.
| Parameter | Recommended value | Description |
|---|---|---|
| Start IP | 192.168.1.100 | Start of the address issuance range |
| End IP | 192.168.1.200 | End of range (maximum clients) |
| Lease Time | 120 minutes (or more) | The time for which the address is issued |
| Primary DNS | 8.8.8.8 | Primary name server |
⚠️ Attention: Router interfaces from different manufacturers (TP-Link, Asus, Keenetic, MikroTik) vary significantly. If you're unsure of a setting, it's best not to change it to avoid disrupting your entire home network.
MAC filtering and security conflicts
Sometimes a phone can't obtain an IP address due to router security settings, specifically MAC address filtering. Each network adapter has a unique physical identifier. If the router's "Whitelist" is enabled, only devices whose MAC addresses are included in the database will have access.
Check your wireless settings (Wireless → Wireless MAC Filtering). If the filter is active, find your phone's MAC address (it's listed in your phone's settings or on the box) and add it to the allowed list. In "Blacklist" mode, on the other hand, you need to make sure your device isn't there.
Another reason could be issues with the encryption type. Some older devices don't work well with the modern standard. WPA3 or mixed mode WPA2/WPA3. Try temporarily switching network security exclusively to WPA2-PSK (AES)This is the most compatible and stable standard at the moment.
It's also worth mentioning the AP Isolation feature. When enabled, WiFi devices cannot see each other and sometimes cannot correctly exchange service packets with the router to obtain an IP address. Make sure this feature is disabled in the advanced WiFi settings.
Resetting network settings and drastic measures
If none of the software methods help, your phone may have accumulated critical network driver errors. Resetting your network settings returns all Bluetooth, WiFi, and cellular settings to factory defaults. This won't delete your photos or contacts, but you'll have to re-enter your WiFi passwords.
On Android, the path is usually located in the System → Reset settings → Reset WiFi, mobile network, and BluetoothOn an iPhone, this is done through the reset menu, as mentioned earlier. After this procedure, the phone will be "clean" in terms of network configurations.
As a last resort, if the problem is limited to one specific router and the phone works fine with other networks, it might be worth updating the router's firmware. Manufacturers often release patches that fix compatibility issues with new versions of iOS and Android.
Should I do a full reset of my router (Hard Reset)?
Only do this as a last resort. A full reset will return the router to factory settings, and you'll have to reconfigure your internet connection (provider login/password), network name, and password. This is a last resort if all else fails.
Why does the phone say "Obtaining IP" but there is internet?
This is a rare visual operating system bug. Most likely, the IP address was retrieved successfully, but the interface didn't update. Try opening a browser and visiting any website. If the pages load, ignore the error message; the connection is established.
Can antivirus block IP address acquisition?
Yes, some aggressive firewalls in antivirus software can block DHCP requests, considering them suspicious activity. Try temporarily disabling WiFi protection in your antivirus to test.
Does distance from the router affect IP acquisition?
Indirectly, yes. If the signal is very weak, data packets may be lost. The phone may successfully authenticate (these are short packets), but the response from the DHCP server will be lost due to poor connection quality, and the process will stall.
What if static IP doesn't work either?
If even manually entering an IP address doesn't allow access, the problem is deeper. Check whether your router has a parental control limit for your device or whether your ISP's data plan has reached its data limit.