How to clear imessage SMS ios7

1. In the SMS number list interface, swipe left (it seems to be swiped right before) to delete the SMS, and a red delete icon will appear. Select Delete.

2. Enter the SMS interface of a certain number. If there are multiple short messages, press and hold the short message to be deleted. After the prompt button appears, select "More", and a small circle that can be checked will appear in front of each message (at this time, small circles that can be checked will also appear in front of other messages). Check and select several short messages to be deleted, and click the trash can icon at the lower left to delete them. At this point, if you click "Delete All" in the upper left corner, all messages will be deleted whether you check it or not. Please be careful.