I have a new Tab A 8.4". Service with Verizon. I have a sim installed. I have a phone number. I also have access to the cellular network, which is functioning (browsing internet). However, I don't seem to have the messenger, phone or voicemail app you'd find on an actual phone. I've had people text me, and I'm not getting notifications, nor can i text them either. How can I get the standard apps for Phone, Messenger and Voicemail? Thank you in advance for your assistance.