If you don't do anything in the Storytel app for 90 minutes, your audiobook will stop playing due to inactivity. This is not possible to disable but if you open the Storytel app within 90 minutes the audiobook should not stop.

If your book has stopped due to inactivity, you can just open the Storytel app again and click Play to continue listening. 

If you listen on an Android device and you experience that your audiobook stops playing even if you have opened the Storytel app during the last 90 minutes, and you haven't pressed any buttons to possibly stop the audiobook, then it might be because of your battery saving settings. 

The battery saving settings can be turned off for the Storytel app, but the instructions differ slightly between different device manufacturers and also between different Android versions. 

Android 12/13 on Samsung, Huawei, Pixel and Oppo

1. Open the ⚙ Settings app.
2. Tap Apps.
3. Tap Storytel.
4. Tap Battery.
5. Select No restrictions.

Android 12/13 on OnePlus

1. Open the ⚙ Settings app.
2. Tap Apps.
3. Tap Storytel.
4. Tap Battery Usage.
5. Ensure that:
   1. Allow foreground activity is switched ON
   2. Allow background activity is switched ON
   3. Allow auto-launch is switched ON
6. Restart your phone.

Samsung with Android 9-11

1. Open the ⚙ Settings app.
2. Tap Apps.
3. Tap Storytel.
4. Tap Battery.
5. Tap Optimize Battery Usage.
6. Tap on the Dropdown menu and select All.
7. Find Storytel in the list and set the toggle to Off.

Huawei with Android 10

1. Open the ⚙ Settings app.
2. Tap Battery Optimization.
3. Ensure that Storytel is under Not allowed.