upgrade iCloud plan at the end of this month?
i am going to upgrade my iCloud plan to 200G, but today is 24 May. How would Apple charge me? It's only 6 days left in May， i will be charged a whole monthly fee?
iPhone 6s Plus, iOS 9.3.2
This article seems to indicate the date you will be charged is a month from when you start, not necessarily at the beginning of the month.
iCloud storage upgrades and downgrades - Apple Support
Contact link bottom left.