I have been searching for a week and cannot find anyone who has posted how to delete waypoint missions that are now on my Phantom 3 STD.  
I am using the DJI GO App for Andriod.

Swiping left when I open the waypoint menu doesnt do anything.
Pressing and holding doesnt do anything.
There must be something I am missing?

Anyone

Long pressing on the missions, you can delete them on your android device.
If you have an iOS device, then you can delete them by sliding it to the left.
May I know what mobile device you're using? may I have a screenshots for the missions page on your screen?

DJI Natalia Posted at 2017-1-20 03:26
Long pressing on the missions, you can delete them on your android device.
If you have an iOS device, then you can delete them by sliding it to the left.
May I know what mobile device you're using? may I have a screenshots for the missions page on your screen?

I am using a Samsung Galaxy S6.
Long pressing on the missions does not work, I un-installed the app from my phone and started over, so I no longer have the screens to show you.

indianaiceman Posted at 2017-1-22 07:31
I am using a Samsung Galaxy S6.
Long pressing on the missions does not work, I un-installed the app from my phone and started over, so I no longer have the screens to show you.

You got it sorted out after uninstalling app and installing it again, right?

By uninstalling the app, it deleted the waypoints that were saved.
I will try this week to record new waypoints and delete them using the long hold on the screen, and let you know.