iPhone No Service: 11 Fixes That Restore Signal (2026)

An iPhone showing No Service cannot connect to your carrier’s cellular network. The cause may be a temporary radio glitch, a local outage, a disabled line, an account problem, incorrect travel settings, or damaged hardware. Most cases do not require erasing the phone.

What “No Service,” “SOS,” and “Searching” mean

These messages look similar, but they describe slightly different situations. Identifying the message helps you choose the right first check.

Apple confirms that “No Service” and “Searching” mean the device is not connected to a cellular network. Its official No Service troubleshooting page also recommends checking the carrier, software, and active cellular line.

How to fix iPhone No Service

Follow these fixes in order. After each step, wait about a minute and check whether the carrier name and signal bars return.

1. Check your location and the carrier network

Move outdoors or near a window, especially if you are underground, inside a large building, or in a rural area. Then ask someone on the same carrier whether their phone has service. If several devices are offline, the likely cause is a local outage rather than your iPhone.

Also check the carrier’s status page or app over Wi-Fi. Planned maintenance, severe weather, and overloaded networks can all produce a temporary No Service message.

2. Turn Airplane Mode on for 15 seconds

Open Settings, enable Airplane Mode, wait at least 15 seconds, and turn it off. This forces the cellular radio to disconnect and register again.

3. Restart your iPhone

A restart clears temporary modem and system errors. On a recent Face ID iPhone, hold a volume button and the side button until the power slider appears. Turn the device off, wait 30 seconds, and power it on again.

If the screen is frozen, use the model-specific force-restart sequence. A force restart does not erase your photos, apps, or eSIM.

4. Confirm that the correct cellular line is enabled

Go to Settings > Cellular. If you use Dual SIM or multiple eSIMs, tap the line you expect to use and make sure Turn On This Line is enabled. Then return to Cellular and verify that Cellular Data points to the intended line.

• Rename similar lines, such as “Home” and “Travel,” to avoid choosing the wrong one.
• Turn off an expired travel eSIM if it keeps trying to connect.
• If your usual line is missing entirely, contact the carrier before deleting or reinstalling anything.

5. Check roaming when you are abroad

If No Service appeared after landing in another country, open Settings > Cellular > your line > Cellular Data Options. Enable Data Roaming only on the line whose plan allows roaming. With Dual SIM, also confirm which line supplies cellular data.

6. Install a carrier settings update

Connect to Wi-Fi, then open Settings > General > About. Stay on that screen for roughly 30 seconds. If an update prompt appears, install it.

Carrier settings tell the iPhone how to connect to voice, messaging, and data services. An update can be necessary after changing SIMs, transferring an eSIM, or when a carrier modifies its network.

7. Update iOS

Go to Settings > General > Software Update. Install the latest compatible iOS release while connected to Wi-Fi and power. Updates can include modem firmware, carrier compatibility changes, and bug fixes.

If No Service began immediately after an update, still complete the carrier-settings check. The two updates are separate.

8. Check the physical SIM or eSIM

For a physical SIM, turn off the iPhone, remove the tray, and inspect the card for damage. Reinsert it in the correct orientation. If the SIM is cracked, corroded, or no longer fits securely, request a replacement from the carrier.

For an eSIM, confirm that the line appears under Cellular and is turned on. If it disappeared during a phone transfer, the carrier may need to reactivate or reissue it. The steps can differ by provider and country.

9. Test network selection

Open Settings > Cellular > your line > Network Selection. Normally, Automatic should remain enabled. If you are roaming and the phone will not register, turn Automatic off briefly and test a permitted partner network.

If every available network rejects the line, the issue is probably the plan, roaming authorization, device lock, or account—not weak reception.

10. Reset network settings

Use this only after the earlier checks. Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. The iPhone restarts with fresh cellular and network configuration.

11. Contact your carrier, then Apple

Your carrier should verify that the account is active, the plan supports the device and location, no outage is affecting you, and the IMEI is not blocked. When using an iPhone bought in another country, ask whether local IMEI registration is required.

If the carrier confirms that the account and network are working, run diagnostics in the Apple Support app where available. Persistent failure after a drop, liquid exposure, or repair may point to an antenna, SIM reader, or modem fault.

Use an eSIM when the problem is limited to one line

An eSIM can be a practical alternative when a physical SIM is damaged, when a carrier supports digital replacement, or when your home network has poor coverage abroad. Supported iPhones can keep more than one plan and use two active lines on compatible models.

First, verify that your iPhone supports eSIM and is not locked to one carrier. For a travel plan, make sure the destination, validity period, and network coverage match your trip. Apple’s guide to using eSIM while traveling internationally explains how to select a data line and manage the home line.

If you use an older model, check its exact capabilities. For example, our guide to eSIM on iPhone XR covers compatibility and activation considerations.

When No Service needs urgent attention

Stop repeating software fixes if the iPhone becomes unusually hot, shows visible damage, cannot detect any SIM or eSIM, or loses service everywhere while another phone on the same carrier works normally. Back up the device over Wi-Fi, document the error, and arrange support.

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