Why your phone isn't searching for Wi-Fi networks – a full breakdown of the causes and solutions

1. Open Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
2. Enter your Apple ID password to confirm.

Firmware update

An outdated OS version may contain bugs that interfere with Wi-Fi. Check for updates:

• 🤖 Android: Settings → System → System Update.
• 🍎 iOS: Settings → General → Software Update.

Application conflict

Some programs (especially VPNs, antiviruses, or "optimizers") can block Wi-Fi access. Try:

1. Start the phone in safe mode (on Android Press and hold the power button until you see the prompt to enter safe mode.
2. If Wi-Fi works in Safe Mode, remove recently installed apps.

⚠️ Attention: On some models Xiaomi, Realme And Oppo there is a function Smart Connection (Smart Network Switch), which automatically switches your device from Wi-Fi to mobile data when the signal is weak. Disable it in Wi-Fi settings if you experience intermittent network drops.

4. Hardware problems: when to call for service

If none of the software methods helped, the reason may lie in physical malfunction phone. Here are some signs that it's time to take your device in for repair:

• 📡 The Wi-Fi antenna is damagedSymptoms: The phone doesn't detect it. not a single one network, even in public places. This often occurs after falls or exposure to moisture.
• 🔌 The Wi-Fi module is faultySymptoms: Wi-Fi turns on but doesn't find a network, or the phone constantly overheats when trying to search.
• 🔋 Problems with the module power supplySymptoms: Wi-Fi is unstable and drops when the battery is low.
• 🛠️ After renovationIf the phone was disassembled (for example, to replace the screen or battery), the antenna cable could have been damaged.

It's difficult to diagnose a hardware failure on your own, but you can check:

1. Test in the engineering menu (For Android):

   ##4636##

   Select Wi-Fi information and look at the status Wi-Fi statusIf he Disabled or Error — the module is faulty.

2. Check on another deviceBring your phone within 10 cm of a working router. If the network still doesn't appear, the problem is with your phone.

Repair cost:

• Wi-Fi Antenna Replacement: from 1,500 to 3,000 rubles
• Wi-Fi module replacement: from 3,000 to 8,000 rubles (depending on the model).
• Diagnosis: usually for free, if you do the repairs in the same service center.

⚠️ Attention: If the phone been in the waterEven if everything appears normal, corrosion could have damaged the Wi-Fi module contacts. In this case, repairs are necessary. as quickly as possible - oxidation will progress.

How to check your phone for moisture?

Most smartphones have moisture indicators—small white or red circles inside the device (usually under the battery or in the SIM card tray). If the indicator turns red, the phone has come into contact with liquid. On iPhones, the indicator is located in the charging port (shine a flashlight on it).

5. Features of different phone models

Some brands have unique bugsWi-Fi-related issues. We've compiled a list of common problems for popular manufacturers:

Brand/Model	A typical problem	Solution
iPhone (all models)	After updating iOS, the phone does not see 5 GHz networks.	Reset network settings or downgrade to a previous version of iOS
Samsung Galaxy (series S20, S21, A52)	Wi-Fi disappears after overheating	Clear the Wi-Fi module cache via Settings → Apps → Three dots → Show system → Wi-Fi
Xiaomi (Redmi Note, POCO)	The phone doesn't see networks after enabling Developer Mode.	Disable Debugging over Wi-Fi in the developer settings
Huawei (P30, P40, Mate)	Wi-Fi issues after Google Mobile Services (GMS) blocking	Set a manual region in Wi-Fi settings on Europe
OnePlus (7T, 8 Pro)	Wi-Fi is unstable when turned on Smart Wi-Fi Switcher	Disable the feature in Settings → Wi-Fi → Advanced

For owners iPhone There is a separate nuance: if the phone does not see the network after replacing the battery in an unofficial service center, it could have worked software blocker (with iOS 15). In this case, only contacting Apple Authorized Service Provider.

On Android-devices with custom firmware (for example, LineageOS) the problem may be in incorrect driversTry flashing your device to the official firmware version.

6. External interference and environmental features

Sometimes the phone does not see Wi-Fi not because of a breakdown, but because external factorsLet's look at the most common ones:

• 📡 Ether overloadIn apartment buildings, Wi-Fi channels may overlap. Use apps like Wi-Fi Analyzer (Android) or Network Analyzer (iOS) to find a free channel and configure the router to it.
• 🛡️ Metal barriersConcrete walls, metal doors, or mirrors can block the signal. Try moving your phone closer to the router.
• 🌡️ Temperature conditionsAt temperatures below -10°C or higher +50°C The Wi-Fi module can be disabled for protection.
• 🚫 Blocked by providerSome internet providers limit the number of connected devices. Check your personal account to see the limit.
• 🔋 Energy saving. Modes Battery or Energy saving may turn off Wi-Fi in the background. Disable them in settings.

If you suspect interference is the problem, try:

1. Switch the router to a different range (with 2.4 GHz on 5 GHz or vice versa).
2. Reduce the transmission power in the router settings (parameter Transmit Power).
3. Use repeater (signal booster) if the router is far away.

⚠️ Attention: In some countries (for example, in Russia) for work on channels 12-14 The 2.4 GHz band requires special permission. If the router is configured for this channel, the phone may not see the network due to software limitations.

7. Diagnostics using specialized applications

If standard methods do not help, use professional tools for diagnostics. They will show whether the phone is able to see networks at the hardware level and help identify hidden problems.

Android apps

• Wi-Fi Analyzer — shows all available networks, their channels and signal level.
• NetSpot — creates a heat map of indoor Wi-Fi coverage.
• PingTools Network Utilities — checks router availability and diagnoses network problems.

iOS apps

• Network Analyzer — scans networks, tests speed and checks ports.
• Fing — shows all devices on the network and helps identify conflicts.
• Speedtest by Ookla — checks the connection speed (if the phone has any network coverage).

How to use Wi-Fi Analyzer:

1. Install the app from Google Play.
2. Start scanning (button View → Channel Graph).
3. If the schedule is empty, but other devices see the networks, the problem is with the phone.
4. If there are networks, but the phone does not show them, there is a problem with the firmware or settings.

For iPhone can be used hidden diagnostic function:

1. Go to Settings → Privacy → Analytics & Improvements → Analytics Data.
2. Find files named WiFi-... and send them to a specialist for analysis.
How to save Wi-Fi logs on Android for diagnostics?

1. Turn on Developer mode (click 7 times on Build number in the phone settings).

2. Go to Settings → System → Developer options → Wi-Fi Log.

3. Enable logging and reproduce the problem.

4. Save the log and send it to the service center.

8. When to contact your provider or service center

If you've tried everything and your phone still can't connect to Wi-Fi, it's time to seek professional help. Here's a checklist for when you need it:

• ✅ The phone doesn't detect not a single one Wi-Fi network (even in public places).
• ✅ The problem appeared after falls, moisture or repairs.
• ✅ Other devices connect to your router without problems.
• ✅ Have you tried it? reset settings, update firmware And checked the router.
• ✅ In engineering menu The Wi-Fi module status is displayed as Error or Not available.

Where to apply:

• Internet provider - if the problem is only with your home network, and other devices also cannot connect.
• Service center - if the phone doesn't see it any Wi-Fi networks (hardware failure is possible).
• Official manufacturer service — if the phone is under warranty or requires replacement of original spare parts.

Average prices for diagnostics and repairs:

Service	Cost (rubles)	Deadlines
Wi-Fi module diagnostics	0–500	10–30 minutes
Replacing the Wi-Fi antenna	1 500–3 000	1–2 hours
Replacing the Wi-Fi module	3 000–8 000	1–3 days
Reflashing the phone	1 000–2 500	30–60 minutes

⚠️ Attention: If you are contacting unofficial service, make sure they have original parts for your model. Using non-original parts (for example, Chinese Wi-Fi module replacements) may result in loss of warranty or repeated breakdowns.

FAQ: Frequently asked questions about Wi-Fi issues on your phone

My phone only doesn't see my home network, but it does see others. What's wrong?

Most likely, the problem is in your router settings:

• Check if the network name is hidden (SSID) in the router settings.
• Make sure that MAC address filtering is not enabled (or add your phone's MAC to the whitelist).
• Try changing the Wi-Fi channel to a less busy one (for example, with 6 on 11).
• If your router is dual-band, check if the network works in both bands (2.4 GHz And 5 GHz).

Also try connecting to the router from another device. If it also can't see the network, the problem is definitely with the router.

After updating Android, my phone stopped detecting Wi-Fi. What should I do?

This is a common issue when updating firmware. Try:

1. Reset network settings (Settings → System → Reset → Reset Wi-Fi, mobile networks, and Bluetooth).
2. Clear the Wi-Fi module cache:
   1. Go to Settings → Apps → Three dots → Show system.
   2. Find Wi-Fi or WLAN, click Storage → Clear Cache.
3. Roll back to the previous firmware version (if there is a backup).
4. If nothing helps, wait for the next update (bugs are often fixed in new versions).

For phones Samsung after upgrading to One UI 5/6 disabling the function may help Intelligent Wi-Fi in the Wi-Fi settings.

My iPhone can't see 5 GHz networks, only 2.4 GHz. How can I fix this?

This is a common problem on older models. iPhone (6/6s/SE) or after iOS update. Solutions:

• Check if yours supports it iPhone 5 GHz networks (older models) iPhone 5 - No).
• Reset network settings (Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings).
• Update iOS to the latest version (new versions have fixed 5 GHz bugs).
• If the problem appeared after replacing the battery, contact a service center (a software blocker may have been triggered).

Also make sure your router is set to a compatible standard (eg. 802.11a/n/ac).

My phone sees networks but won't connect—it says "Saved, WPA/WPA2 protected." What should I do?

This is a different issue, unrelated to network discovery. Causes and solutions:

• Incorrect password - delete the network from the saved ones and enter the password again.
• Incompatible encryption type - change it in the router settings WPA3 on WPA2-PSK.
• MAC blocking — add the phone's MAC address to the list of allowed devices on the router.
• DHCP failure - In the Wi-Fi settings on your phone, specify a static IP address (for example, 192.168.1.100).

If all else fails, try connecting to the network from another device. If that fails, the problem is with the router.

Is it possible to replace the Wi-Fi module in a phone yourself?

Theoretically yes, but not recommended for several reasons:

• Required special tool (soldering station, picks for disassembly).
• There is a high risk of damage cables or motherboard.
• On iPhone After self-replacement, a software lock may be triggered.
• You will lose guarantee (if it's still valid).

If you still decide to do it, look for disassembly of your specific model on YouTube and buy the module only from trusted sellers (for example, on AliExpress with a high rating). The average cost of a module is from 1,000 to 5,000 rubles, depending on the phone model.