I just purchased the S9 + last week and noticed that when I'm on a call, I do not receive an alert notifying me when I receive a text message using Verizon's Message+. The text message will come through but there isn't a sound or vibration that notifies me that someone texted me. I did trouble shooting with tech support, made sure all sounds were on, made sure "Notify while on a call" was turned on, force stopped the application, deleted and reinstalled the application, reset my setting to factory and still nothing is working. I even had the tech check to see if he had the same issue using his Note 8 with the Message + app and he too is having the same issue and so is a friend of mines who has the S8+. It could possibly be a glitch with Message + and the new Oreo Software. I hope Verizon fixes this glitch soon. It's frustrating to have to keep pressing the power key while I'm on a call to see if you have a missed text. This has nothing to do with users using iMessage. I haven't checked this issue with email alerts. I'm most concerned about being notified via sound/vibration when I receive a text while on a call.
Please advise if this issue is being looked into to.