I do not see that application, I searched for it for a long time last night. The only way to access voicemail is to dial 1 or *86 at the moment.
I searched a lot of forums and all told me to open the voicemail app, is there a place to download that?
Do you have the Samsung Galaxy J3 (prepaid model) or the Samsung Galaxy J3 V (postpaid model)? Apparently there is a difference. The prepaid model doesn't have the Visual Voicemail app, but the postpaid model does according to the user guides.
The link to the PDF user guide can be found on these pages for the individual models.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.