Line is a popular instant messaging app which lets you exchange messages over the Internet. You can also make free voice and video calls using Line on mobiles and tablets. If you have not installed Line on Android yet, you should see our guide on installing and configuring Line on Android.
So you have created backups of Line chats on your Android phone. Now, you want to restore those chats on a new device or on a fresh installation of Line app. If you have created your Line chat backups using the Backup All option, then it can be imported using the steps shown in this guide.
Without registering your email, Line app allows you to use almost all of its basic features on your smartphone or tablet. You can add friends, send messages, make voice and video calls, etc. However, email registration is needed for some activities like using Line messenger on your PC.
If you use one Line account on more than one mobile phone or tablet, the chat history on the previously used device is deleted. You can backup your Line chat history on your Android phone using its feature called Backup Chat History.
You want to delete Vine account on your Android phone. Perhaps after deleting your existing Vine account, you want to create a new account or maybe you don't want to share Vine videos for sometime.