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COMMON DEVICE ISSUE · NOT AN ERROR CODE

iPhone shows No Service, SOS or Searching

Distinguish SIM/eSIM, coverage and carrier issues from device faults.

✓ Manufacturer source✓ Safe checks✓ Verification and escalation
Apple · Phone10 November 2026 · source checked
UNDERSTAND THE ISSUE

What might cause this?

Similar symptoms can have different causes across models and software versions. These are possibilities, not a diagnosis.

Possible causes

  • There may be a local carrier outage or weak coverage.
  • The cellular line or eSIM may be disabled.
  • Carrier settings or iOS may need an update.
  • The SIM or cellular hardware may be faulty.
Open official manufacturer document ↗
SAFE CHECKS IN ORDER

What can you try?

Try these safe, user-level checks in order; do not open the device. Menu labels may differ by version.

  1. 01

    Step 1

    Check coverage in another location and look for announced carrier outages.

  2. 02

    Step 2

    Toggle Airplane Mode briefly, then restart the iPhone.

  3. 03

    Step 3

    Under Settings > Cellular check that the required line is enabled, particularly with dual SIM.

  4. 04

    Step 4

    While connected to Wi-Fi check for carrier-setting prompts in Settings > General > About and for iOS updates.

  5. 05

    Step 5

    If using a physical SIM ask the carrier about damage or seating; do not delete an eSIM without a recovery plan.

CHECK THE RESULT

How can you confirm the fix?

Test a call and cellular data in another area; Wi-Fi working alone does not confirm cellular service.

WHEN TO SEEK PROFESSIONAL HELP

When should you contact service?

If the carrier confirms a working line yet No Service persists, arrange device diagnostics with Apple.

⚠ Stop using a device if it overheats, shows liquid damage, smells burnt or has a swollen battery.

POTENTIAL COST

Will a repair cost money?

Settings, cables and user checks may require no repair. Hardware costs depend on the exact model, warranty and service diagnosis; no fixed price is promised.

FREQUENT QUESTIONS

Quick answers

Could these checks affect warranty?

Use only external checks recommended for end users by the manufacturer. Opening batteries, electronics or sealed parts can create safety and warranty risks.

What if the steps do not help?

Write down your model, software version and test results. Share those details with official support rather than repeating potentially unsafe actions.

Official manufacturer source

How was this sourced?

This is an original summary of the manufacturer support document; use the official page for current, model-specific instructions.

Open official manufacturer document ↗

Features and model coverage vary. Compare the source with your exact model.