- Switch to the airplane mode.
- Launch Snapchat and take any desired screenshots.
- Completely exit Snapchat and then remove the app;
- After removing the app, switch off airplane mode;
- Reinstall the app and sign back in; and presto—you’ve successfully taken a screenshot in Snapchat without scaring or alerting anyone!
It looks like a time-consuming and tedious process, but it really only takes a few mins really
Enjoy!