Consumption of data
If you don't watch or listen to much from your phone and prefer to use it for internet browsing and social media then 10gb will be more than enough for your entire month. If you tend to watch or listen to more videos, then you may struggle to get through the month, but if you watch them in the evenings or at weekends, then you may not even notice the difference.
If you want to use your phone for watching movies, then you may struggle to get through the month, but if you watch them in the evenings or at weekends, then you may not even notice the difference.