For doing this troubleshooting you need to follow below process:
- Go to messaging menu from handcent sms application.
- Enter menu and then hit the SETTINGS option.
- Scroll down and UNCHECK Notifications option onto this setting menu.
- Exit the handcent sms application.
This is simple process that works to stop double notifications onto this mobile phone sms application. Hence there is no need to directly switch to another application because of such small issue. Apply this process, and check what result arrives on your mobile phone.
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