Section 15: Troubleshooting

Review the following problems and descriptions to assist in troubleshooting your device.

General Problems

To perform a manual Hard Reset, power off the device.

Important!: Caution, if you perform a manual Hard Reset, the storage and setting is also initialized.

Problem

Description Solution

 

 

“InvalidormissingSIMcard.

Check that the SIM card was correctly

You can still make

installed.

emergency calls if your

 

service providersupports it”

 

displays

 

 

 

“No network coverage,” “Error unable to connect. No network coverage.” or “Message sending failed” displays

The network connection was lost. You may be in a weak signal area (in a tunnel or surrounded by buildings).

Move and try again.

You are trying to access an option without a subscription. Contact the service provider for further details.

Troubleshooting 113

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Sharp SGH-I627 user manual Troubleshooting, General Problems, To perform a manual Hard Reset, power off the device