Just bought a 2019 Sierra AT4 w/ 31k miles on it and after having a 2015 Silverado previously (owned an F150 in between) I was surprised the texting application was no longer present. After researching I learned GM did away with the texting application as they “assumed” most people use Android Auto or Apple CarPlay for messaging. That’s fine but I’m with you - I don’t want to plug my phone in every time. I like to just leave it in my pocket, connect via BlueTooth, but still be able to hear my messages and then decide if I want to respond. Not a problem for new trucks w/ wireless CarPlay or Android Auto but this wasn’t an option in 2019. Like the truck so far but just something that seemed pointless to me on GMs part.