Mileage guide
How to Check a Mileage Tracker’s iPhone Battery Use
By FlatMile ·
At a glance
A mileage tracker can contribute to iPhone battery use, but there is no reliable universal percentage that applies to every device and driving day. Check Settings, then compare similar days while recording capture completeness. A lower battery reading means little if the setting change also caused missing trips.
This guide is a measurement protocol, not a FlatMile battery benchmark. No physical-device endurance test is presented here.
Start with the phone's own evidence
Open Settings, then Battery. Apple's battery-usage instructions explain the usage view and available insights; exact labels vary by iOS version. Select the period that includes your driving and inspect the tracker alongside other activity.
Record the iPhone model, iOS version, tracker version, available battery-health information and whether you charged during the observation. A screenshot can preserve the period and readings, but remove personal notifications before sharing it.
Read the label attached to each percentage. An app's share of used energy, its reported usage and the phone's remaining charge are different quantities. Record exactly which figure the screen shows rather than relabelling it as a measured cost per hour or per mile.
Use a comparison sheet, not a single impression
Choose several comparable workdays or repeated necessary journeys. Keep navigation, screen use, charging and other major activities as consistent as practical. Note differences you cannot control.
| Field | What to record | Why it matters |
|---|---|---|
| Observation window | Start and end times | Separates a short drive from a whole day |
| Charge | Start and end percentage; charging intervals | Makes the total change interpretable |
| Driving | Duration and number of expected journeys | Describes the workload |
| Other use | Navigation, calls, screen-on activity | Identifies competing battery demands |
| Conditions | Weak signal, unusual heat, software update | Records possible confounders |
| Capture result | Expected versus saved journeys | Checks usefulness alongside energy use |
Do not compare a day spent navigating with the screen on to a day when the phone stayed unused in a bag and attribute the entire difference to mileage capture.
A fictional calculation with a limited conclusion
Suppose an unplugged phone begins at 82% and ends at 70% after a two-hour observation. That is a 12-percentage-point drop across the whole phone. It is not a measured 12% cost for the tracker.
Now suppose a second observation drops from 80% to 72%, but navigation was off and only one journey occurred instead of four. You have two observations with different workloads, not proof of a four-point tracker improvement. Record them, then find a more comparable period before changing your routine based on the result.
Change one thing and verify capture
Review Apple's battery-drain guidance for device-level explanations before assuming an app defect. If you change a tracker setting or permission, write down the change and repeat a familiar journey safely.
Check whether departure, arrival and distance are still present. Apple’s Location Services documentation explains the permissions controlling location access. Removing access can affect location-dependent behavior, so treat it as a functional change as well as a privacy choice.
If battery use appears unusual under comparable conditions, send support the device/version details, observation period, charging information and capture result. Use approximate locations unless precise ones are needed. The missing-trip checklist can help distinguish reduced energy use from disabled or incomplete tracking.
Sources
- Apple: check battery usage.
- Apple: if the iPhone battery drains too quickly.
- Apple: privacy and Location Services.