In which mobile platforms the “push token” is not permanent?

Question

We all know that in order to use the push notifications functionality in any mobile platform we need a unique identifier called \"push token\".

The developer needs someh

Answer 1

FOR IOS, as you can see here

Does the APNS device token ever change, once created?

and here

Apple Documentation ApplePushService

if the user restores backup data to a new device or reinstalls the operating system, the device token changes.

Following the EasyAPNS instructions (www.easyapns.com), every time the app starts you can check if the token is registered or not, and eventually register the device.