I use a Samsung tablet to draw, although I used to have the same problem on my iPhone 6, but my select tool doesn't work? Usually my first thought would be to delete the app and reinstall but I don't want to risk losing all of my drawings so I'm a bit stumped. I've dealt with it for about 2 or 3 years now but after this long I'm getting a bit frustrated... If I can get help that'd be great! Thanks!
NOTE: On iOS, if you delete the app, you delete your sketches.
All sketches are local to the device. You need to back it up manually:
https://www.sketchbook.com/help/knowledge-base/how-save-your-work/
Backup (Export to iCloud)
https://autodesk.box.com/s/z5qd8v6bkykvcgepwzq1l6g1dntu8qbd
https://autodesk.box.com/s/8l8moq7fkb7rreyv38daj09yuzkwe3vt
https://www.sketchbook.com/help/knowledge-base/use-icloud/
Backup (Export to Dropbox) > Same workflow on Android
https://autodesk.box.com/s/3s6yp7f4yzmzx4m7khh58t51o5tkz000
Mobile to Desktop (Export to PSD)
http://autode.sk/2g1jBR4
https://www.sketchbook.com/help/knowledge-base/how-save-your-work/
Once you have backed up the Sketches, you can then delete the app and restore it via [=} > Store > Restore.
https://www.sketchbook.com/help/knowledge-base/restore-pro-tools-sketchbook-mobile/
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