Upgrading iPhone: Verizon store or Apple store?

Well, there’s big difference between writing good software and using software that was written by someone else…

My dad is an expert in computer simulations - he wrote software in the 70’s and 80’s that is still used by the government today.

I have to help him keep his PC running…

Go to Settings > Messages. Is “iMessage” on or off? It sounds like it’s off. But if it is on, turn it off, then back on and see if that worked.

I think you got it. It was off and had a message under it saying “Activation failed”, but I turned it on and now when I send stuff to other iPhones it is blue in my display. I haven’t heard back whether the recipient sees it as blue, but it seems to me like you probably fixed me. Thanks!