How do I fix notification problems on other Android devices? Follow

Go to Settings / Sounds and Vibration / Volume

• Make sure Notifications volume is at least half way 

Disable Battery Optimization

• Open your device's Settings app.
• Tap Apps & notifications > Advanced > Special app access > Battery optimization.
  If it displays, 'Not optimized' change it to 'All Apps'
• Find Telmediq, tap the app and then make sure it's set to 'Don't optimize' and then tap Done.

Check Permissions and Notification Category settings

• Go to Settings /apps / Application List / Telmediq

• 'Data usage' or 'Usage info',
  Mobile data
  • Allow background data usage
• Notifications
  • Allow Notifications
  • Bypass DND / Set as Priority Enable
  • If there are Categories, open each one and ensure Sound is not 'None' or 'Silent'
    
    • this occasionally changes after updating from 7 (Nougat) to 8 (Oreo) or 9 (Pie)
• Permissions
  • Camera (to attach photos of face sheets, etc)
  • Microphone (to take or place VoIP calls/callbacks from within the app)
  • Phone (to trigger regular calls/callbacks from within the app, with or without Call ID blocking)
  • Storage (to attach documents or Gallery images)