Hi,
I have the SE model and recently had a scare where my phone almost broke! I therefore want to make sure the following are backed up but it seems quite complicated
Contacts
Notes
Calendar
Photos (I do pay 0.79p a month for extra storage?)
Is there anyway I can check login details for apps/ websites? I have so many setup with my fingerprint that I would struggle to log in without it 
Is there anything else I would likely miss??