Are these two different phones listed in Google Drive's Backups?
You need to check whether there is another phone (in this case with the same model) that used the same account by going to Google Dashboard. From there select Android. The number of devices using the account will be shown and listed. 

If there are 2 Samsung SM-J327A models, to differentiate between them, you can go here to use Find my device and compare the IMEIs of both devices by clicking on the info button.