How to track Stolen or Lost Android phone
There is an Application Called Plan B is an application for Android that you can use after your phone has been stolen, misplaced or lost it but can’t remember where. You are probably asking yourself how that is possible and all. The idea behind Plan B is actually really simple: apps cannot only be installed directly using the phone, but also remotely from Google Play and that is what Plan B takes advantage of that.
You get up to six email messages that update you on the location of your phone. If a data connection is not available, for instance because it has been disabled or of the phone is in an area with bad reception, SMS may be used instead to inform you about the location of your phone. This appears to be only available in the US though.
Several factors can prevent the application from sending out the information to the associated Gmail account. Besides what has already been mentioned, there is a possibility that the “new owner” of the phone may notice the installation of the new application, that the phone blocks the automatic start of the application, or that security software does so.
It is still worth a try and without doubt one of your best options to locate your phone again. It is definitely worth a try, and especially so if you happen to misplace your phone regularly.
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A manual test on my Samsung Galaxy S3 was unsuccessful by the way. While the remote installation of the application worked, it would not auto start on the phone. A manual start of the application however did not result in the sending of an email to the associated Gmail account.