Thank you for your post.
At this time, FileMaker Go does not have a way to turn off the Auto-Lock setting.
I encourage you to enter this suggestion into our Feature Requests web form at:
These web entries are monitored and read by our Development and Product Management departments where they are then discussed and considered for a future release. Although I could copy your post and paste it into the web form, there are some additional questions asked that only you can answer.
Submitted... thank you!