Device Id For Android

Factory reset will delete all the data on your phone, including contacts, app data, settings and media files. Sometimes TelephonyManger. The following is an example of writing data to an installation file that would be stored along with any other data the application saves locally. Only the app instance for which it was provisioned can access this identifier, and it's relatively easily resettable because it only persists as long as the app is installed.

For more information on this approach see Reto's talk. Transfer data using Sync Adapters.

Transferring data without draining the battery. Here is an informative answer. There are many instances where you'd get collisions even if there is substantial data that is different for each value. They can change this installation id easily, right? Non-repudiability could be something a user wants, such as when authenticating a payment, or it could be an undesirable property, such as when they send a message they regret.

Thus it should be unique, if it exists on the device. You can also see my blog post Leaking Android hardware serial number to unprivileged apps where I discuss what other files are available for information.

Let's go through the full approach. Documentation says it represents the hardware serial number. If not, you can come up with your own solution. Transmit network data using Volley.

2 Easy Ways To Find Android Device ID and Change It

Google Play Install Referrer. So the bug is already resolved? In this case, you're saving per-device state on the server side without a user account. It has worked very well for me.

The description of Device ID

But couldn't we use this same technique again to create virtual device ids and just not back that up the same way? Android device mac id also a unique id, project report on employee retention it won't change suppose if we format the device itself so using the following code to get mac id. This may also change if the device gets upgraded.

The technique given above was copied from an article on Pocket Magic. Anthony Nolan shows the direction in his answer, but I thought I'd write out the full approach so that others can easily see how to do it it took me a while to figure out the details. So your server will see user clearing data as like user uninstalling and re-installing your app - which is not unreasonable.

Find lock or erase a lost Android deviceAccount Options

How do we grade questions? It's pretty clear that there is no end-all-be-all solution to this.

Either way, as emmby mentions in his answer, there are still problems even with the blog info. Otherwise, the level of uniqueness depends on the entropy of the identifier and the source of randomness used to create it. Performing network operations. One thing I'll add - I have one of those unique situations.

Best practices for unique identifiers

Leave a Reply Cancel reply Your email address will not be published. Interact with peripherals. If Joe from the answer above gives this one a try on his many devices, that'd be nice.

For a general look at Android permissions, see Permissions overview. Do keep in mind that this method may not work on some Android devices, particularly new Samsung devices.

Their preferred solution is to track app installs rather than devices, and that will work well for most use cases. Resettability and persistence define the lifespan of the identifier and explain how it can be reset.

The longer, and more reliably, an identifier persists, such as one that persists across factory resets, the greater the risk that the user may be subjected to long-term tracking. Building effective unit tests. We are not affiliated with Google. That's why this question is here to begin with.

Find lock or erase a lost Android device - Google Account Help