How to retrieve logs from an iOS device
1) Open iTunes and select your device.
2) Click on the Apps item on the left, scroll down the page and select the NoMachine icon in the “File Sharing” section.
3) From the "NoMachine Documents" box on the right, drag and drop on the desktop the 'nx' folder.
4) Compress it to send whole directory or enter the folder to select what to send.