This is absolutely infuriating and I must rant a bit. If Samsung wants to compete with Apple and their iPad, wouldn't it be smart to optimize your messaging app to work over wifi; enabling users who purchased a Galaxy Tab S4--to support a growing company and encourage innovation--to use the stock messaging app on said device?! I cannot believe that I am forced to use a third party app to sync my messages from a Samsung Galaxy device (Galaxy Note 9). Apple users can use imessage on multiple devices and it does not skip a beat. Let me point out that I have been a Samsung user for many years now, and had multiple Samsung devices. I still do...The Note 9, the Gear S3 (which can send and receive messages via Samsung Messages), the Tab S4, a Samsung Smart TV with a Samsung sound bar. My wife has a Note 9 and the new Galaxy Watch! I do not like Apple! Neither of us do! But they have it right with imessage! Will Samsung ever create an ecosystem like Apple has? I know they were trying, but why--in 2018--can I not message someone from my Samsung tablet, using the stock messaging app over Wifi! I shouldn't need a sim card to send and receive messages from a Samsung device to a Samsung device. This is a first world problem, I shouldn't be as petty as I am being at the moment. But this really shouldn't be an issue. If anyone else is as frustrated as I am, this thread is for you...Thank you.