iPhone 18 Wi-Fi and Bluetooth Not Working: Greyed-Out and Drop Fixes
Independent guide — no official affiliation with the platforms mentioned.
Short answer
Greyed-out Wi-Fi and Bluetooth toggles on the iPhone 18 are usually caused by the iOS 27 connectivity module getting stuck, and cycling airplane mode followed by a full restart resolves most cases. For constant drops, reset network settings and install iOS 27 point updates. If the Wi-Fi and Bluetooth rows are missing entirely from Settings, a service evaluation of the antenna component is required.
Official source
support.apple.com
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01 — Step-by-step fix
Step-by-step fix
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STEP SISTEMİ
STEP 01
Reset the connectivity module with the airplane cycle
Open Settings > Airplane Mode and toggle it on and off three times; this cycle restarts the stuck connectivity module on iOS 27. Then fully power off the phone with the side and volume buttons and turn it back on after 30 seconds. Greyed-out Control Center toggles return to normal in most cases after these two steps.
STEP 02
Check in Settings, not the Control Center
The Wi-Fi and Bluetooth buttons in Control Center only cut the temporary connection; the greyed state is visually misleading. Open Settings > Wi-Fi and Settings > Bluetooth; if the rows are active, connections are managed from there. If the rows appear in Settings, the problem is software, not hardware.
The crossed icon in Control Center means the connection is temporarily cut, not permanently off.
STEP 03
Reset network settings
Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. This erases Wi-Fi passwords, paired Bluetooth devices, VPN and APN settings; your personal data is unaffected. Afterwards re-enter Wi-Fi passwords and re-pair Bluetooth devices.
STEP 04
Install iOS 27 point updates
Check Settings > General > Software Update; point releases like 27.0.1 and 27.1 arriving during the launch period fix exactly these connectivity stalls. After updating, restart the phone once and test Wi-Fi and Bluetooth again. Keeping automatic updates on brings future fixes automatically.
STEP 05
Clear pairing memory for a specific device
If the issue is with a single earbud, watch or car kit, tap the info button next to the device in Settings > Bluetooth and choose Forget This Device. Also reset the accessory's own pairing memory by holding its case button for 15 seconds. Re-pairing after resetting both sides resolves two-sided cache problems.
STEP 06
Request service if the rows are missing entirely
If the Wi-Fi and Bluetooth rows never appear in Settings or grey out again after a reset, an antenna component evaluation is required. Start diagnostics from the Apple Support app under warranty; the app routes you to service if the fault is hardware. Back up before your appointment.
Missing Wi-Fi and Bluetooth rows in Settings are the clearest hardware sign; try the software fixes first, then contact service.
Tips
- Installing iOS 27 updates a week after launch avoids first-release connection bugs; still, do not postpone security patches.
- If you use Wi-Fi Calling, carrier settings re-download after a network reset may take 1-2 minutes; do not be alarmed.
- If the same issue recurs on one Wi-Fi network, restart the router; the problem may be network-side, not the phone.
02 — Frequently asked questions
Frequently asked questions
Is greyed-out Wi-Fi and Bluetooth a hardware fault?
Usually not. The connectivity module getting stuck is a known early iOS 27 behavior, resolved by the airplane cycle, a full restart or a network reset. Hardware suspicion only arises when the rows are missing entirely in Settings.
Does resetting network settings erase my data?
No. The reset erases only Wi-Fi passwords, Bluetooth pairings, VPN and APN configurations; photos, apps and personal data remain untouched.
My Bluetooth car kit still will not pair — what now?
First use Forget This Device on the iPhone side, then delete pairings from the car kit's own memory. Restart the car's multimedia system and pair both devices from scratch; two-sided cache cleanup resolves most car connection problems.
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Links in this guide point to official platform pages. Steps may change with platform updates; check the page date.
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