Updating cell phone
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You can force your Android phone or tablet to search for an update from the Settings menu on your device, but you should note that just because a newer version of Android exists it doesn't mean it will be available for your device - now or ever.
It will either be displayed on this screen, or you might have to select 'Software information' to find out.
If you own a smartphone, chances are that your device is running a version of Android, the open source mobile operating system developed by Google.
If your device is running anything lower than Jelly Bean, then unless you've simply never updated the software it's unlikely that an update will be available - the manufacturer probably doesn't support this device any longer.
These include operating systems such as Amazon’s Fire OS, as well as many other versions developed under the auspices of the Android Open Source Project.One notable exception to this general rule is Google’s line of Nexus devices.Checking for System Updates Checking for App Updates Forcing a System Update Check Using Smart Switch for Samsung Devices Community Q&A This wiki How teaches how to check for updates on your Android device, both for the system software and for any apps that are installed. The latest version is Android 7 Nougat, which will become available for more devices over the coming months though can now get Android O in beta form.Marshmallow is 6.x, Lollipop is 5.x, Kit Kat is version 4.4.x, and 4.3, 4.2 and 4.1 are all Jelly Bean.