iPhone Wi-Fi Not Working
Your iPhone Wi-Fi Isn’t Working — Here’s What To Check First
Your iPhone’s Wi-Fi isn’t working. Maybe it won’t turn on. Maybe it won’t connect to your network. Maybe it connects but apps can’t reach the internet. Maybe it keeps dropping. Maybe the signal is weak. Or maybe the toggle is greyed out entirely.
Here’s the thing most people get wrong: they assume the iPhone has failed and start looking at a repair. In reality, most Wi-Fi faults are router or settings issues, not hardware faults. And in most cases, the fix is free.
The key is working out whether the fault is the iPhone, the router, or a setting. The symptom tells you where to look.
This guide walks through the eight most common Wi-Fi fault patterns in order: won’t turn on, won’t connect, connects but no internet, keeps dropping, weak signal, greyed out, Bluetooth also failing, and slow Wi-Fi.
Why Your iPhone Wi-Fi Stops Working
An iPhone connects to Wi-Fi through a chain of components:
The Wi-Fi antenna receives the wireless signal
The Wi-Fi IC processes the signal
iOS handles the network settings
The router provides the internet connection
If any link fails, the iPhone may not connect, may connect but have no internet, or may drop the connection.
On most iPhones, the Wi-Fi IC also handles Bluetooth. That’s why Wi-Fi and Bluetooth often fail together.
Common Symptoms
Wi-Fi won’t turn on
Won’t connect to a network
Connects but no internet
Keeps dropping the connection
Weak signal
Wi-Fi greyed out
Bluetooth also not working
Slow Wi-Fi
What Causes These Faults
Wrong Wi-Fi password. The most common cause.
Router fault. The router has failed or lost its internet connection.
ISP outage. The internet provider has an outage.
Router compatibility. The router uses a setting the iPhone doesn’t support.
Weak signal. The iPhone is too far from the router.
Interference. Other devices or walls interfere with the signal.
Software fault. iOS has a Wi-Fi bug.
Failed Wi-Fi IC. The chip on the logic board has failed.
Failed Wi-Fi antenna. The antenna has failed.
What the Guide Covers
This diagnostic guide walks through all eight fault patterns:
Wi-Fi antenna testing with expected results
Wi-Fi IC fault identification
Software settings review
Router diagnostics
Network reset procedure
Private Wi-Fi Address troubleshooting
Model-specific notes for iPhone 6 through iPhone 15
Full repair-or-bin framework
Each section includes a test procedure, what a good result looks like versus a failed one, and a repair-or-bin threshold.
What You’ll Learn
You’ll learn how to diagnose the fault from the symptom. Wi-Fi greyed out means a hardware fault. Connects but no internet means a router issue. Won’t connect means a password or settings issue.
You’ll learn how to test the Wi-Fi antenna, how to reset network settings, and how to rule out the router before opening the phone.
You’ll also learn how to troubleshoot Private Wi-Fi Address issues, how to change DNS settings, and how to decide whether a repair is worth doing.
Repair or Bin?
Most Wi-Fi faults are free to fix on phones under four years old.
A network reset is free. A software restore is free. A Wi-Fi antenna replacement is $20 to $60 for the part, or $80 to $150 fitted. A board-level Wi-Fi IC repair is $100 to $200.
Where the maths changes is the Wi-Fi IC. On a phone over five years old, the repair often isn’t worth doing.
The guide includes a full repair-or-bin framework, plus a DIY versus professional cost table.
Frequently Asked Questions
Why is my iPhone Wi-Fi not working?
The most common causes are a router issue, a password issue, or a settings conflict. Restart the router and forget the network first.
Why won’t my iPhone connect to Wi-Fi?
A wrong password, a router compatibility issue, or a saved network conflict.
Why does my iPhone connect to Wi-Fi but have no internet?
A router or ISP issue. Test on another device to confirm.
Why does my iPhone keep dropping Wi-Fi?
A weak signal, interference, or a failing Wi-Fi IC.
Why is my iPhone Wi-Fi greyed out?
A hardware fault. The Wi-Fi IC has failed.
Why is my iPhone Wi-Fi slow?
A router issue, ISP throttling, or interference.
Is it worth repairing an iPhone with Wi-Fi issues?
Usually yes, if the fault is the antenna. If the Wi-Fi IC has failed on a phone over five years old, replacement is usually the better call.
Get the Complete Guide
This guide gives you the full diagnostic sequence for all eight Wi-Fi fault patterns, the Wi-Fi antenna testing, the model-specific notes, and the honest repair-or-bin maths.
iPhone Wi-Fi Not Working — $7.95
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