Do I need to print my boarding pass if it's on my phone?

Related questions

1. Is it better to check in online or at airport?
2. Do you need to print out your e ticket?
3. Can you check in a bag after checking in online?
4. How do I add baggage to Aegean Airlines?
5. What time do I need to be at the airport if I have checked in online?
6. Should I print boarding pass at home?
7. Do I need to print my e ticket?
8. Can I print my boarding pass from home?
9. When can I check in with Aegean?
10. Do I need to print my boarding pass?

Tags

1. #mobile
2. #kiosk
3. #service
4. #there
5. #boarding
6. #before
7. #airport
8. #print
9. #airports