Found a solution ....other may want to try with their S 10 . Brief backgound....home has NO cell service ( sits in a mountain valley) For YEARS I had an LG phone with wifi calling through Verizon and it would text ANYTHING instantly through my house wifi and land line. Recently switched to US Cellular and a new Galaxy S 10. After setting up everything correctly I tried texting through my wifi line land . Sometimes they went ...in a few minutes , sometimes not for an hour . Read all these problems online that everyone seems to be having ....changed my messaging app ....even tried the Verizon Message + that worked fine on my old phone and still NOTHING . Finally started digging deeper into my wifi settings on the S 10 . Opened "settings" icon and then clicked on "connections" opened my home wifi connected which I was connected to under current network. There is a little "gear wheel" to the right of my named connection, pressed it to open another "settings" page for my conection . On the bottom of this page is an "Advanced" tab. OPEN IT ! There is a setting called "Metered network" Mine was originally set ( probably from the factory) as "Treat as metered". Open that tab and set it to "Treat as unmetered" , Save and exit !! PROBLEM SOLVED !! Texts ANYTHING now INSTANTLY !!! LOVE this phone ! Was going to hate to have to return it because of the texting issue !
Just bough Samsung S10e (Had an S7 Edge before) Couldn't and still cant send a PDF as a text.
Just now - using suggestions and changing to unmetered on S10e.
WiFi OFF - Won't send.
WiFi On - Won't send
WiFi "Calling" OFF - Won't send.
WiFI "Calling" ON - Won't send.
I'm not terribly techy but would love to have a solution for this. It's frustrating.
@Lithium-AdminPlease pin this as the answer for this problem. This is a very strange problem that seems to have something to do with Samsung and/or carriers pushing a security update, enabling Metered Connection on home wifi.
I have a full Unifi setup at home that is way underloaded and my wife nor I on Samsung S10's, all of a sudden recently could not send a picture through text to each other. My wife was ready to sell her phone and go back to her iPhone.
This is poor management on Samsungs part. Push a request to enable, but force enable? Unsat.