The best way to do this is to email the file from the computer to yourself on the Android device.
Unlike iPhones and iPads, which are all basically the same, each manufacturer of an Android device builds it their own way, and not all of them handle email or email attachments in exactly the same. We have found a method that works on most Android devices to get the chart file you sent to your Android to show up in Astro Gold, but you need to kind of trick the device.
The chart file you send in an email is still attached to the email, and so before we can get Astro Gold to view the chart file you need to detach the file from the email. So, open the email on the Android and you should have the option to download the file. Once it is downloaded it should go into your Download folder.
Now open Astro Gold and in the top right corner tap the three dots. In the menu that opens click Settings. In the next menu click Import Chart File. Now direct it to the chart file you put in your downloads file and you will be able to import it into Astro Gold.