Unlimited cellular data is tough to come by. Keep an eye on how much data you’re using to avoid paying overage fees or having your data speed throttled down to a trickle for the rest of your billing cycle.
In an ideal world, you wouldn’t have to micromanage any of this stuff. But we don’t all live in that world yet, and there are many ways to reduce the data your phone uses.
How to Check Your Data Usage
Before anything else, you need to check your data usage. If you don’t know what your typical usage looks like, you have no idea how mildly or severely you need to modify your data consumption patterns.
You can get a rough estimate of your data usage using Sprint, AT&T, or Verizon’s calculators, but the best thing to do is actually check your usage over the past few months.
The easiest way to check past data usage is to log into the web portal of your cellular provider (or check your paper bills) and look at what your data usage is. If you’re routinely coming in way under your data cap, you may wish to contact your provider and see if you can switch to a less expensive data plan. If you’re coming close to the data cap or exceeding it, you will definitely want to keep reading.
You can also check recent cellular data usage on your iPhone. Head to Settings > Cellular. Scroll down and you’ll see an amount of data displayed under “Cellular Data Usage” for the “Current Period.”
This screen is very confusing, so don’t panic if you see a very high number! This period doesn’t automatically reset every month, so the data usage you see displayed here may be a total from many months. This amount only resets when you scroll to the bottom of this screen and tap the “Reset Statistics” option. Scroll down and you’ll see when you last reset the statistics.
Read more: https://www.howtogeek.com/212295/how-to%C2%A0reduce-your-iphone%E2%80%99s-cellular-data-usage/