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Click on this if you experience this issue on a mobile device which runs on Android OS.

Click on this if you experience this issue on your iPhone.

Click on this if you experience this issue on a mobile device which runs on Windows Phone OS.

Click on this if you use a Sony smartphone.

Click on this if you use an iPhone.

Click on this if you use a Huawei smartphone.

Click on this if you use an HTC smartphone.

Click on this if you use a Blackberry smartphone.

Click on this if you use an Alcatel smartphone.

Click on this if you use a Samsung smartphone.

Click on this if you use a LG smartphone.

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Click on this if you use a Xiaomi smartphone.

Click on this if you use a ZTE smartphone.

Click on this if you use a smartphone from a different manufacturer than the ones listed here.

Click on this if you have the problem while being in a rural area.

Click on this if you have this problem while being in an urban area.

Click on this if you tried all the other solutions, but none of them worked.

Click on this if you are subscribed to AT&T.

Click on this if you are subscribed to T-Mobile.

Click on this if you are subscribed to Sprint.

Click on this if you are subscribed to Centurylink.

Click on this if you are subscribed to Verizon.

Click on this if you are subscribed to Frontier.

Click on this if you are subscribed to Boost mobile.

Click on this if you are subscribed to MetroPCS.

Click on this if you are subscribed to Virgin Mobile.

Click on this if you are subscribed to Cricket.

Click on this if you are subscribed to a different operator (carrier) from the ones listed here.

  1. Disable the Airplane mode

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  2. Check (and reinsert) the SIM card

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  3. Restart the mobile device

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  4. Call AT&T's hotline

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  5. Set your phone to select mobile networks automatically (iOS)

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  6. Reset your device

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  7. Subscribe to a different operator (carrier)

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  8. Uninstall the faulty app

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  9. Reset the network settings

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  10. Call HTC's technical support

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  11. Call the operator (carrier) you are subscribed to

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  12. Set your phone to select mobile networks automatically (Android)

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  13. Replace the SIM card

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  14. Buy a mobile device with a wider signal−detection span

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  15. Select the carrier manually (Android)

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  16. Select the carrier manually (iOS)

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  17. Change the network type to GSM Only

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  18. Buy a new mobile device

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  19. Call T−Mobile's hotline

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  20. Take your device to a repair store

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  21. Call MetroPCS's hotline

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  22. Call Sony's technical support

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  23. Contact Huawei's technical support

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  24. Call Samsung's technical support

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  25. Call LG's technical support

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  26. Call Motorola's technical support

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  27. Contact Apple's technical support

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  28. Contact Microsoft's technical support

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  29. Call Xiaomi's technical support

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  30. Contact ZTE's technical support

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  31. Call Verizon's hotline

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  32. Call Blackberry's technical support

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  33. Call Alcatel's technical support

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  34. Call Sprint's hotline

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  35. Call Centurylink's hotline

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  36. Call Frontier Communications' hotline

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  37. Call the manufacturer's technical support team

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  38. Set your phone to select mobile networks automatically (Windows phone)

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  39. Update the mobile device's operating system and carrier settings

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  40. Check if your device's IMEI is nulled

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  41. Wait for up to half an hour

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  42. Call Boost Mobile's hotline

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  43. Call Virgin Mobile's hotline

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  44. Call Cricket's hotline

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  45. Pay the bill(s)

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  46. Turn on data roaming

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