The cellular data counters on iPhones and cellular-capable iPads show how much mobile data apps and system services have used. You can view and reset these usage statistics to start tracking consumption for a new period.
Reset Statistics clears the mobile data usage counters stored on the device, including total, per-app and roaming usage, so counting starts again from zero. It does not replenish your data allowance, erase apps or their contents, change your carrier’s billing records, or reset network settings such as saved Wi-Fi passwords.
Current Period is the device’s tracking period, which may differ from your carrier’s billing period. A manual reset at the start of your billing cycle makes the periods easier to compare, but does not limit data use or prevent overage charges. Your carrier’s app, account portal or bill provides the usage figure used for billing.
Resetting removes the existing usage totals from this screen. A screenshot of those totals can preserve a record before you reset them.
The controls described here apply to iOS 27 and iPadOS 27. The screenshots show an older iPad layout. Menu names and positions can vary by device and region.
Steps to view and reset mobile data usage on iPhone and iPad:
- Open Settings from the Home Screen or Spotlight.

- Tap Cellular on iPhone or Cellular Data on iPad.
Depending on your region, the menu may be called Mobile Service or Mobile Data.
- Scroll down to the mobile data usage section.

- Check the Current Period total and the usage listed for each app.
If Show All appears on iPhone, tap it to expand the app list. The figures cover the device’s tracking period, not necessarily the current month. With Dual SIM, the usage shown is for the selected cellular data number.
- Tap Reset Statistics at the bottom of the cellular settings screen.

- Confirm the statistics reset in the dialog.
The older iPad dialog shown uses a Reset button.
- Scroll back to the mobile data usage section.
- Confirm that Current Period has restarted at zero or shows only data used since the reset.
The screenshot shows 0 bytes immediately after a reset. New cellular activity can increase the counter straight away.