No Data Troubleshooting
Having trouble with mobile data not working on your Android or iPhone? This step-by-step troubleshooting guide will help you quickly diagnose and fix “no data” issues, whether you’re seeing “no internet,” missing 4G/LTE/5G, or simply can’t get online. Learn how to check your data settings, APN, SIM card, and more—fast solutions for both Android and iPhone users.
Common Symptoms
No internet connection on mobile network
4G/LTE/5G icon missing or grayed out
“Could not activate cellular data network” error
Can’t browse, stream, or use apps without Wi-Fi

Step by Step Troubleshooting
Android
Check Mobile Data
Go to Settings → Network & Internet → Mobile Network → Mobile Data. Ensure it is ON.Airplane Mode
Swipe down from the top → Tap Airplane Mode. Ensure it is OFF.Check Data Plan
Settings → Network & Internet → Data Usage. Confirm plan is active and data is available.Check APN Settings
Settings → Network & Internet → Mobile Network → Access Point Names. Compare to carrier’s APN. Edit if needed.Restart Device
Try SIM in Another Device
If works: Device issue. If not: SIM/network issue.Contact Carrier if unresolved.
iPhone
Check Cellular Data
Settings → Cellular → Cellular Data. Ensure it is ON.Airplane Mode
Settings → Airplane Mode. Ensure it is OFF.Check Data Plan
Settings → Cellular. Confirm plan is active and data is available.Check APN Settings
Settings → Cellular → Cellular Data Network. Compare to carrier’s APN. Edit if needed.Restart iPhone
Try SIM in Another iPhone
If works: Device issue. If not: SIM/network issue.Contact Carrier if unresolved.
Troubleshooting Flowchart (Text Outline)
Is mobile/cellular data ON?
No → Turn ON
Yes ↓Is Airplane Mode OFF?
No → Turn OFF
Yes ↓Data Plan active?
No → Renew plan
Yes ↓APN correct?
No → Fix APN
Yes ↓Restart device
Try SIM in another device
Works → Device issue
Doesn’t work → SIM/network issueContact carrier

Pro Tips / Dealer Notes
Always double-check the APN settings—they’re a common culprit after SIM swaps or carrier changes.
If data works in another phone, the issue is likely device-related (settings, software, or hardware).
Some prepaid plans may restrict data after a certain usage—verify plan status before advanced troubleshooting.
FAQs
Q: Why did my mobile data suddenly stop working?
A: Common causes include plan expiration, accidental Airplane Mode, or incorrect APN settings.
Q: Will resetting network settings erase my data?
A: No, but it will remove saved Wi-Fi passwords and Bluetooth pairings.














