I just added the Number Share service to my personal Verizon account. Here is the equipment that i have:
Samsung Galaxy S8 Plus (Phone)
Samsung Gear S3 Frontier 4G LTE (Smartwatch)
I have went into my account online, per Verizon's FAQ instructions, and linked my phone with the device i want to share the number with, which happens to be my new smartwatch.
The Number Share FAQ is here...
NumberShare FAQs | Verizon Wireless
This tells me that my watch can be used to receive and make calls and receive and send texts with the SAME phone number as my phone, even though the device technically has its own phone number it will send out as my main cell number, see below...
What is NumberShare?
NumberShare is a service that lets you use your mobile number on up to 5 connected devices. Send and receive calls and messages on whatever device is at hand, even if you're away from your phone.
Your smartphone's mobile number is the "host" and shares your number with your authorized "extension" devices. Although each extension device has its own mobile number, NumberShare lets you share your smartphone's number with all extensions. Both numbers work on your extension devices and will appear on your Verizon Wireless bill.
Now you can talk and text, get emails and notifications* using the new Samsung Gear S3 smartwatch on the Verizon Wireless network.
Now here is the weird part...
If i completely turn my phone off (simulating if i was to leave it at home and go to my office only wearing my watch), i can make a call from my watch alone and whoever i'm calling sees my correct caller ID (the phone number of my phone)... also, if someone calls me when my phone is off the call routes to my watch. That part works great, luckily for me that's the most important part.
The main issue i'm having is text messaging. Again, if my phone is off and i send a text with my watch it shows the actual phone number of the watch to whoever receives my message, which we obviously don't want it to do because no one i know knows that number and it defeats the purpose of "number sharing on 2 devices". If someone tries to send my regular cell number a text while the phone is off i never get it. If someone texts the watch directly i get it fine, but they have to text the watch phone number. So basically, texting doesn't seem to be working correctly when the host phone is shut off.
Keep in mind, if i have the phone and watch connected via Bluetooth life is great and everything is fine, but the whole reason i got the watch is so i could take advantage of not having my phone with me and being able to receive calls and texts away from my phone, and the calls i get, it's just the texts i don't get. I thought it may be a provisioning issue so i have reset my phone and watch a few times but still the same thing. Maybe it's because the service is so new some bugs need to be worked out. Anyway, that is my issue, anyone has a fix please let me know.
Also, just for the record, this may save you hours of frustration...
The Number Share feature/service WILL NOT work with business accounts, so if you have a phone on a biz account and you get the watch, it wont work, you will need to move the numbers and devices over to a personal account only, i verified this with Verizon after trying for hours to get things to work on a business account.