By default, Amplitude tracks the user properties listed in the table below automatically, via client-side SDKs. All these properties will be prefixed with whenever you encounter them in Amplitude. (You can configure Amplitude's SDKs to disable automatic tracking of these properties, if you prefer.)
Amplitude uses the collected IP address to determine a user's location properties (City , Country , Region , and DMA ) using the MaxMind database. MaxMind is widely accepted as the most reliable digital mapping source.
In Amplitude charts, if you choose to segment by device ID, event ID, latitude, longitude, server upload time, session ID, user ID, or ID, you'll have to supply the exact values you're looking yourself. Additionally, you will not be able to group by event ID, latitude, longitude, server upload time, or ID.
NOTE: If you’re sending data server-side instead of using an SDK, Amplitude cannot track these user properties automatically. You must instead set these properties explicitly.
| Property | Value Definition |
|---|---|
| Cohort | Behavioral cohort name.
"Cohort Name" |
| Country | Country of the event. This is pulled using GeoIP.
"United States" |
| City | City of the event. This is pulled using GeoIP.
"San Francisco" |
| Region | Region (e.g. state, province, county) of the event. This is pulled using GeoIP.
"California" |
| DMA | Designated Market Area (DMA) of the event. This is pulled using GeoIP.
"San Francisco-Oakland-San Jose, CA" |
| Language | Language of the device.
"English" |
| Paying |
Paying is set to null for all users by default. The property value changes to "true" at the time of the user's first revenue event (or first verified revenue event, if validation is on). Once a property is set to "true", it will not change. You can manually change this value via Amplitude's Identify API. "true", null/none |
| Platform | Platform of the product.
"iOS", "Android", or "Web" |
| OS |
"ios 9.1", "Chrome 46" |
| Device Family | Family of the device.
"Apple iPhone", "Samsung Galaxy Tablet", "Windows" |
| Device Type | Specific type of the device.
"Apple iPhone 6", "Samsung Galaxy Note 4", "Windows" Events tracked by Amplitude's Javascript SDK will display device family values e.g. "Apple iPhone" etc. This SDK does not track the specific type of device. |
| Carrier | The device's carrier.
"Verizon" |
| Start version | First version of your application identified for the user. Please note that this might change if the user reinstalls the app.
"1.0.0" |
| Version | Current version of your application identified for the user.
"1.0.0" |
| Library | Library used to send the event.
"amplitude-ios/3.2.1", "http/1.0" |
| IP Address | IP address of the user.
"127.0.0.1" |
| Device ID | The device ID of the user.
"C8F9E604-F01A-4BD9-95C6-8E5357DF265D" |
| Latitude | The latitude of the user.
"42.3296" |
| Longitude | The longitude of the user.
"-88.9995" |
| User ID | The user ID of the user. This should be a unique user identifier of the user and should never change for the same user, e.g. a hashed string of the user's username. This is explicitly set by the customer; Amplitude does not auto-populate this field. "abc123" |
| ID | The Amplitude ID of the user.
"16342233234" |
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