Wi-Fi not working on my Sony phone: full diagnostics and repair guide

You are trying to connect to your home network, but your phone Sony Xperia Is your Wi-Fi connection persistently ignoring? Or is the network connecting, but the internet isn't working, and the signal icon is flashing gray? Wireless connection issues on smartphones Sony — a common headache for users, and there can be dozens of causes: from a simple router failure to a hardware failure of the module. In this article, we'll look at all possible scenariosWhy isn't Wi-Fi working on my phone? Sony, from the simplest to the most complex, and we will give step-by-step instructions on how to fix each one.

Feature of the devices Sony (series Xperia 1/5/10, XZ, XA etc.) - their close integration with proprietary services and a customized shell AndroidThis means that the standard advice for the "naked" Android They may not work here. We'll take all the nuances into account, from firmware conflicts Sony to specific module errors Qualcomm WCN3990, which is installed in most of the brand's models. You'll also learn how to distinguish a software glitch from a physical malfunction—this will save you time and money on unnecessary repairs.

Before moving on to complex troubleshooting, check the obvious: does Wi-Fi work on other devices? If so, the problem is definitely with your phone. If not, the router or ISP is to blame. This simple test will narrow down the problem by 50%.

1. Basic checks: router, network, and phone settings

Start with basic steps—they solve the problem in 60% of cases. Most often, Wi-Fi is Sony does not work because:

• 🔌 A disconnected router or modem - check the power supply, cables and indicators on the case.
• 📶 Weak signal — if the phone is far from the router or behind thick walls, the network may drop out.
• 🔒 Incorrect password — even if you are sure that you are entering it correctly, try resetting the password on the router.
• 📱 Airplane mode - on Sony Xperia It sometimes turns on accidentally (for example, when pressing a combination of buttons).

Also make sure that:

• ⚡ On the router the Wi-Fi indicator is on (if not, reboot the device using the button Reset or unplug the power cord for 30 seconds).
• 🔄 Have you tried it? reboot the phone - hold the power button for 10 seconds until it vibrates.
• 📵 On the phone power saving mode is not enabled - it can turn off Wi-Fi to save battery (Settings → Battery → STAMINA Mode).

If after these steps Wi-Fi still doesn't work, proceed to the next section. Please check your router settings especially carefully: on some models Sony Xperia (For example, Xperia 1 II or Xperia 5 III) conflicts with encryption arise WPA3 - try switching to WPA2-PSK.

2. Reset network settings on Sony Xperia

If the phone sees the network, but does not connect (or connects, but without access to the Internet), the culprit may be cached Wi-Fi settingsOn . Sony their reset is performed differently than on the standard one Android:

1. Open Settings → System → Reset settings.
2. Select Reset Wi-Fi, mobile network, and Bluetooth settings.
3. Confirm the action (you may be asked to enter your PIN or pattern).
4. After rebooting, try connecting to the network again.

This procedure deletes all saved networks, passwords, and VPN settings, but does not affect personal data (photos, contacts). If Wi-Fi works after the reset, the problem was a settings conflict. If not, move on.

Make sure you remember your Wi-Fi password

Write down your VPN settings (if you use one)

Check that your phone has enough charge (at least 30%)

Disable the SIM card if it is interfering (optional)

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Attention! On some firmware versions Sony (especially on older models like Xperia Z5) resetting network settings may result in loss of IMEIThis is a rare bug, but if you lose mobile internet after a reset, check your IMEI *#06# and restore it if necessary through Sony Companion.

3. Problems with firmware and updates

Smartphones Sony They're known for their stability, but they're not immune to firmware bugs. Most often, Wi-Fi stops working after:

• 📥 Android updates — especially relevant for transitions to new versions (for example, from Android 11 on Android 12).
• 🔄 Rollback to old firmware — If you tried to downgrade, the Wi-Fi module may fail due to driver incompatibility.
• 🛠️ Rooting or unlocking the bootloader - this breaks the digital signatures of system files responsible for the network.

How to check if the firmware is at fault:

1. Check the software version in Settings → About phone → Android version.
2. Find reviews online for your model + firmware version (e.g. "Xperia 10 III Wi-Fi not working after updating to Android 13").
3. If the bug is widespread, wait for a patch from Sony or try to manually install older/newer firmware via XperiFirm + Flashing Tool.

If you recently updated your phone and your Wi-Fi has disappeared, try:

• 🔄 Restart your phone in safe mode (Hold down the power button → long tap "Power off" → "Safe mode"). If Wi-Fi works in this mode, a third-party app is to blame.
• 📉 Roll back to the previous firmware version (for advanced users only!).
• 🔧 Reset your phone to factory settings (last option, if nothing helps).

How to roll back firmware on Sony Xperia?

1. Download the required firmware version via XperiFirm.

2. Install Flashing Tool (For example, Newflasher).

3. Connect your phone in mode Fastboot (hold Volume up + Power when turned on).

4. Follow the instructions of the firmware program.

⚠️ Risk of bricking your phone - do so at your own risk!

4. Conflicts with applications and services

Wi-Fi on Sony may be blocked due to:

• 🛡️ Antiviruses or firewalls (For example, Kaspersky, Avast, Bitdefender).
• 🔗 VPN clients (especially if they are set to "always on").
• 📱 Sony proprietary utilities (Xperia Companion, Bravia Sync).
• 🎮 Game accelerators (For example, Game Turbo in some firmware).

How to find the culprit:

1. Start your phone in safe mode (See instructions above). If Wi-Fi works, uninstall apps one by one until you find the problematic one.
2. Check it out Settings → Apps → Permissions → Wi-Fi Access - disable suspicious programs.
3. Disable VPN in Settings → Network & Internet → VPN.

If the problem appeared after installing a specific application, uninstall it and clear the cache in Settings → Storage → Cached Data.

5. Hardware faults: how to diagnose

If software methods did not help, it may be the fault physical defectIn phones Sony most often fail:

• 📡 Wi-Fi/Bluetooth module (usually Qualcomm WCN3990 or Murata).
• 🔌 Antenna contacts - oxidize or come off after falling.
• 🔋 Power controller - If your phone doesn't hold a charge, it can also affect Wi-Fi.

Signs of hardware failure:

• Wi-Fi completely absent in the settings (no switch).
• Telephone doesn't see any network, although other devices see it.
• Wi-Fi works, but the signal is extremely weak (1-2 divisions) even near the router.
• The problem has appeared after a fall, exposure to moisture, or repair.

For diagnostics:

1. Check if it works Bluetooth — if not, then the problem is definitely in the module (they are often combined).
2. Connect your phone to to another router (for example, in a cafe or with friends).
3. Try turning it on modem mode (Settings → Network & Internet → Access Point) - if it does not work, this indirectly confirms a hardware failure.

⚠️ Attention! If the phone been in the water or fell from a height, do not attempt to disassemble it yourself—corrosion on the board may spread. Contact a service center. Sony or a proven repair center with ultrasonic cleaning equipment.

6. Sony Xperia-specific errors

By the phones Sony There are unique bugs that are not found on other brands:

• 🔄 "Cyclic connection" — the phone constantly connects and disconnects from the network. Cause: conflict with setting Random MAC (random MAC address). Solution: turn it off in Wi-Fi Settings → Advanced → Private DNS & MAC Address.
• 📵 "No internet when connected" — there is a Wi-Fi icon, but the pages don’t load. Cause: bug with IPv6 or DNS. Solution: disable IPv6 in your router settings or manually enter DNS (for example, 8.8.8.8 And 8.8.4.4).
• 🔌 "Wi-Fi only turns on after a reboot.". Cause: malfunction Sony Power Management. Solution: Disable battery optimization for system apps in Settings → Battery → Optimization.

Another rare but annoying problem is SIM card conflict. On some models (Xperia XZ3, Xperia 1) When activating two SIM cards or an eSIM, Wi-Fi may be blocked. Solution:

1. Remove the second SIM card.
2. Restart your phone.
3. If Wi-Fi works, contact a mobile phone store to replace your SIM card with a compatible one.

7. When to contact the service center

If you have tried all the methods in this article, but Wi-Fi is not working Sony If it still isn't working, it's time to call a professional. Here's a pre-visit checklist:

Make a backup copy of your data (photos, contacts)

Write down IMEI (*#06#)

Check if the warranty is still valid (check the receipt or Sony Support)

Find out the approximate cost of repairs (call the service center)

Remove the SIM card and memory card

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The cost of repair depends on the problem:

• 🔧 Replacing the Wi-Fi module: 3,000–8,000 ₽ (depending on the model).
• 📡 Repair of antenna contacts: 1 500–4 000 ₽.
• 🔌 Board diagnostics: 500–1,500 ₽ (sometimes free if you agree to repairs later).

Official service centers Sony in Russia:

• 🏙️ Moscow: Letnikovskaya st., 10 (SC "Sony Service").
• 🏙️ Saint Petersburg: Marshal Tukhachevsky Street, 22.
• 🌍 Regions: list on the website Sony Russia (section "Support").

⚠️ Attention! If the phone is under warranty, don't even think about disassembling it yourself — this will void your warranty. Also, avoid "gray" repair shops that offer repairs based on photos without diagnostics—they often use non-genuine parts.

FAQ: Frequently asked questions about Wi-Fi on Sony

🔍 Why can't my Sony Xperia see 5 GHz networks?

This is a typical problem for older models (Xperia Z3, Xperia M4 Aqua) - their Wi-Fi modules do not support the 5 GHz band. On new phones (Xperia 1 II and newer) check:

1. Is 5 GHz enabled on the router (in its settings)?
2. Isn't there a checkbox in your phone that says "2.4 GHz only"?Wi-Fi Settings → Advanced).
3. Is the router firmware updated (on some models) TP-Link there is a compatibility bug with Sony).

⚡ My Wi-Fi has disappeared after the update. What should I do?

First try:

1. Reset network settings (Settings → System → Reset settings).
2. Roll back to the previous firmware version (if you know how).
3. Check forums (eg. XDA-Developers) - there may already be a patch for your model.

If nothing helps, contact a service center. Sometimes a firmware reflash is required. Wi-Fi module separately.

📱 The Wi-Fi is working, but there's no internet. What's wrong?

The reasons may be as follows:

• 🔌 The router doesn't distribute the Internet. (check on other devices).
• 📡 Incorrect IP/DNS settings (try manually entering DNS 8.8.8.8).
• 🛡️ MAC address blocking on the router (check in its settings).
• 🔧 IPv6 protocol failure (turn it off on the router).

🔌 Can I fix my Sony's Wi-Fi myself?

If the problem is software (settings failure, application conflict) - yes. But if it's the fault hardware module, That:

• 🔧 To replace the Wi-Fi chip you need soldering iron and experience working with microelectronics.
• 🛠️ For antenna repair - multimeter and knowledge of circuit design.
• ⚠️ Risk of damaging the board when repairing it yourself very high.

If you are not a specialist, it is better to contact a service center.

💰 How much does it cost to repair a Wi-Fi module at Sony?

Prices are valid for 2026 (may vary depending on region and model):

• Sony Xperia 1/5 II/III: 5,000–7,000 ₽ (original module).
• Sony Xperia 10 IV: 3 500–5 000 ₽.
• Sony Xperia XZ2/XZ3: 4,000–6,000 ₽ (due to the complexity of disassembly).
• Diagnostics: 500–1,500 ₽ (sometimes free with subsequent repairs).

In official services Sony repairs cost 20-30% more, but a 6-12 month warranty is provided.