Wi-Fi, cellular & Bluetooth

Cellular data not working even with signal bars showing

This usually means data is disabled in settings, an APN configuration issue, or a carrier account problem rather than weak signal. Checking data settings first is the quickest fix.

Difficulty
Easy
Time
10–20 minutes
DIY cost
$0
Pro cost
$0

Symptoms

  • Full signal bars but apps won't load anything
  • Wi-Fi works fine but cellular data doesn't
  • Data toggle appears to be on already
  • Started after switching phones or carriers

Likely causes

  • CommonCellular data toggle turned offThis master switch can get turned off accidentally, blocking all data over the cellular network.
  • CommonIncorrect APN (Access Point Name) settingsThis carrier-specific setting tells the phone how to connect to mobile data, and wrong settings block data entirely.
  • PossibleData roaming disabled while travelingIf outside your carrier's home network area, roaming needs to be enabled for data to work.
  • PossibleAccount suspended for data or billing reasonsA billing issue or hitting a hard data cap can disable data while calls and texts still work.
  • Less commonSIM card issueA loosely seated or damaged SIM can allow calls/texts to work while data specifically fails.

What to do

  1. Go to Settings > Cellular (or Mobile Data) and confirm the main data toggle is on.
  2. Check that data roaming is enabled if you're traveling outside your carrier's home coverage area.
  3. Toggle Airplane Mode on and off to refresh the connection.
  4. Check APN settings against your carrier's published values, or reset network settings to restore defaults.
  5. Restart the phone.
  6. Remove and reinsert the SIM card.
  7. Check your carrier account for any billing alerts or data cap notices.
  8. If data still doesn't work after these steps, contact your carrier to verify data service is active on your line.

When to call a pro

If data remains inactive after checking settings and the SIM, contact your carrier to confirm data service is enabled on your account.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.