Resetting cellular statistics on your iPhone clears all recorded data usage and call time, setting every counter back to zero. It does not delete your apps, photos, messages, or any personal data. It only wipes the usage log your phone has been keeping since the last time you (or your phone) started tracking.
What Actually Gets Cleared
When you tap “Reset Statistics” at the bottom of Settings > Cellular, your iPhone zeros out several categories of information. The per-app data usage numbers that appear next to each app in your cellular settings all drop to zero. Your total cellular data sent and received resets. Call time counters, including current period and lifetime totals, go back to zero as well.
Your phone also tracks data used by system-level services like push notifications, Wi-Fi Assist, and background processes. These appear under “System Services” in your cellular settings and are also wiped when you reset. After the reset, every byte your phone uses over cellular starts counting fresh, giving you a clean slate to measure from.
What It Does Not Affect
This is purely an informational reset. Your apps stay installed. Your photos, contacts, and settings remain untouched. Your cellular connection itself, your phone number, and your carrier plan are all unchanged. Think of it like resetting a trip odometer in your car: you’re clearing the display, not draining the gas tank.
It also has no effect on your carrier’s billing records. Your carrier tracks your data usage independently on their servers, and those are the numbers that determine your bill. The figures on your iPhone are a local estimate, and they often don’t match your carrier’s numbers exactly because the two systems measure data slightly differently. Resetting your phone’s statistics won’t change what your carrier charges you.
Why People Reset Their Statistics
The most common reason is to align your phone’s tracking with your billing cycle. iPhones don’t automatically reset data statistics at the start of each month, so if you want to know how much data you’ve used this billing period, you need to manually reset at the beginning of each cycle. Without doing this, you’re looking at cumulative data from whenever you last reset, which could be months or even years ago.
Resetting is also useful for troubleshooting. If your data seems to disappear faster than expected, you can reset your statistics and then check back after a day or two to see exactly which apps are consuming the most cellular data. This makes it easy to catch a background-hungry app that’s burning through your plan. You can also use this approach while traveling internationally to monitor roaming usage closely and avoid surprise charges.
If you have a limited data plan, resetting at the start of each cycle lets you watch your usage climb toward your cap in real time, giving you a chance to cut back before overage fees kick in. Over several months, this habit also helps you figure out whether your current plan is the right size, or whether you’d save money by switching to a larger or smaller one.
A Known Bug Worth Noting
In rare cases, resetting cellular statistics has caused network connectivity problems. Some iPhone 13 Pro Max users on iOS 15.1 reported losing 5G connectivity after resetting their stats, with phones dropping to 4G or LTE and failing to load anything without Wi-Fi. Text messaging also stopped working for affected users. Notably, a family member who skipped the reset had no issues at all on the same carrier and same phone model.
AT&T support confirmed in that case that the reset triggered the problem, and a call to the carrier’s support line resolved it. This appears to be an uncommon glitch rather than expected behavior, but it’s worth knowing that the option isn’t always perfectly harmless. If you experience connectivity issues after resetting, contacting your carrier is the quickest fix.
How Android Handles It Differently
Android doesn’t have an equivalent manual “reset statistics” button in the same way. Instead, Android lets you set a data usage cycle date that matches your billing period. You do this through Settings > Network & internet > Data usage > Data warning & limit, where you pick the day of the month your carrier’s billing cycle starts. The phone then automatically resets its usage tracking on that date each month, which eliminates the need to remember to do it yourself.
Android also lets you set data warnings and hard limits that notify you or cut off cellular data when you approach a threshold. iPhones don’t offer this natively, which is one reason the manual reset habit is more important for iPhone users who want to keep tabs on their usage throughout a billing period.
How to Reset on iPhone
Open the Settings app, tap Cellular (or Mobile Data in some regions), then scroll all the way to the bottom of the screen past the list of apps and system services. Tap “Reset Statistics.” Your phone will ask you to confirm since the action can’t be undone. Once confirmed, all counters immediately drop to zero.
There’s no way to schedule this automatically on iPhone, so if you want your statistics to match your billing cycle, set a monthly reminder for the day your cycle starts. Some users find it helpful to screenshot their usage just before resetting, creating a simple month-by-month record of their data consumption over time.