Tap the Home key.

Tap the message icon.

Tap the required SMS to read it.

Tap the write reply icon and key in the required text.

Tap Send.

Tap the required reply.

Tap the microphone icon and follow the instructions on the screen to record and send the required reply.

Tap the Return key.

Tap the menu icon.

Tap Delete.

Tap the required message.

Tap Delete.

Tap the confirm icon.

Tap the Home key to return to the home screen.