Possible cause: The battery is worn out and needs to be replaced.
Solution: Try another battery and charger for the same phone model, or visit your retailer and ask them to verify if the battery and charger are working properly.
The phone turns itself off Possible cause: The 
button has been pushed unintentionally.
Solution: Turn on the automatic key lock, or lock the keypad manually
Possible cause: The battery connection is poor.
Solution: Make sure the battery is inserted correctly % 5 To insert SIM card and battery.
I cannot use SMS/text messages on my phone
Possible cause: Settings are missing or incorrect.
Solution: Contact your network operator to find out the correct SMS service centre setting % 39 Text messaging (SMS).
I cannot use MMS/picture messages on my phone
Possible cause: Your subscription does not include data capability.
Solution: Please contact your network operator.
Possible cause: Settings are missing or incorrect.
Solution: % 6 Help in your phone or
1Go to www.sonyericsson.com/ support.
2Select a region and a country/region.
3Select the Phone setup tab, and select a phone model.
4Select the MMS setting to download to your phone.
I cannot use the Internet Possible cause: Your subscription does not include data capability.
Solution: Please contact your network operator.
Possible cause: Internet settings are missing or incorrect.
Solution: % 6 Help in your phone or
1Go to www.sonyericsson.com/ support.
2Select a region and a country/region.
Troubleshooting 89
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