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If you don’t have access to this information, you probably shouldn’t be trying to look this phone’s call log up.

Most phone trackers are downloaded to the phone in question; they then upload data about that phone’s calls, SMS messages, and more to an online server. You can access this information by logging into the app’s server with a username/phone number and password.

Android phones can use an app literally named “Spy Phone” by a company of the same name. The “SpyToMobile” app and the “SpyHuman” app are both cross-platform apps that will accomplish your goal. Other possible search terms may include “phone tracker”, “phone data tracker”, etc.

If you don’t have permission from the owner of the phone to download the app, don’t do it. Doing so may have serious legal consequences.