How about considering the following scenario and substituting the 'hours' for your
own values that can be obtained from the 7 day usage under 'Battery' in settings.
Part A) (Hours) x (Life of Product) = (Total Usage)
Part B) iPhone Cost / (Total Usage) = Cost/Use
For example:
The variables for my scenario:
- One coffee at $5 and lasts for 10 minutes.
- One iPhone at $1500 and lasts for 3 years.
Based on my iPhone usage this week:
Part A) 23 x 156 = 3588
Part B) 1500 / 3588 = $0.42 cents per hour
Therefore, a $1500 iPhone that is used on average 23 hours per week will end up costing me $0.42 per hour over its life.
Alternatively, the coffee works out to be $30 per hour!
[doublepost=1499725877][/doublepost]The other consideration is that some people may choose to trade in or sell their old iPhones to reduce the initial cost of the new phone.