A new Android device means transferring all your content, including your favorite apps, from old to new. You don't have to do this manually, because Google provides built-in support for backing up and restoring your content. Here's how you do it.
These steps may vary based on the manufacturer of your device, Android version, and may only be available on newer versions of Android. If you do not have these steps at all, you can use an external app from your device manufacturer to transfer your apps instead.
Using the Google Backup Method
Google uses your Google account to back up your content, including apps, using your included Drive storage. You must ensure that you have enabled Google Backup on your old device before you make transfers.
Enable Google Backup
To start, open your device's "Settings" menu in the app drawer or by swiping down to access your notification shadow, and then tap the gear icon.
Then tap "System". If you have a Samsung device, choose the option is & # 39; Accounts and backup & # 39 ;.
In the following menu, Samsung owners must press & # 39; Backup and reset & # 39; to tap. Other owners of Android devices can ignore this step. 
Tap "Backup". Samsung owners, make sure "Back up my data" is enabled and then select "Google account".
Ensure that & # 39; Backup to Google Drive & # 39; t listen and tap "Back up now" to ensure that your apps are backed up completely.
You can also tap "App data" to browse and check each app that you want to transfer is listed. If this is the case, you are ready to start transferring, so switch to your new device.
Transfer your apps to your new device
When you launch a new Android device or a device that has been reset to factory settings, you will be given the option to restore your content (including apps) from your Google Drive backup.
Again, it is important to note that these instructions may also vary depending on your version of Android and the manufacturer of your device.  Switch on your new device and follow any initial instructions until you have the option to start recovering your data. Select "Back up the cloud" to start the process.
On the next screen you may be asked to log in to your Google account, so do this first too. You will then see a list of recent backups of the Android devices associated with your Google account.
Tap the backup of the device that you want to restore.
You get a list of content options to restore, including your device settings and contacts. "Apps" may be disabled, tap the check box next to it, and then select "Restore."
As your data is restored, you can complete the rest of the installation process and use your device.
Once the recovery is complete, your apps (and other content) will be transferred to your new device from your Google Drive backup, ready to use.
Checking your Google Play Store app library
If you have already set up your new device before recovering or transferring data, it might be worth checking which apps you previously installed with your Google account. With your apps library in the Play Store you can quickly install all the apps that you might miss on your new device.
To start, open the Google Play Store app and then expand the burger menu in the upper left corner. 
Tap "My Apps & Games."
Devices listed on the library tab are "Not on this device". Tap "Install" next to one (or all) of the apps that you want to install on your device.
Use third-party apps
The best and most reliable method for most users is to use the built-in Google Backup method to transfer your apps and other content. If that option does not work for you, third-party apps are available.
Like the Google Backup method, you can use it to transfer your apps from one Android device to another. Most of these options are available in the Google Play Store and sometimes pre-installed.
The best and most reliable are those offered by device manufacturers such as LG Mobile Switch, Huawei Backup and Samsung Smart Switch. There are other third-party apps, such as Helium, but these have a mixed reputation, where users report that they do not work so well on certain devices.
With Samsung Smart Switch you can, for example, transfer apps and your other content from one Samsung device to another. You can do this wirelessly or connect your devices via a suitable USB cable.
Transfer from iPhone to Android
Android and iOS are two completely different environments, so it is not possible to transfer your iPhone apps directly to an Android device. However, many developers offer their apps on both platforms and Google can find suitable apps for you during the new device configuration process.
When you start setting up a new Android device, instead of choosing to transfer from a Google Drive backup, tap the option to transfer data from your iPhone and follow the instructions the screen.
Owners of Samsung devices can also use the Smart Switch app, which during the transfer process offers its own "Download Matching Apps" option.