Hi, y’all. That’s my southern NY accent kicking in. 
Long story short, after going mirrorless with the A7R3 when it first came out and not loving its quirky operation, I went back to Nikon. Traded my Canon 1DMKII for the Sony. Was tired of lugging heavy gear. So the Nikon I went to was the D850. I really liked it but it and the lenses were just too damn heavy. Again. So I got the A9 and it solved some of the issues I had with the 7R3. What it didn’t quench was my thirst for resolution.
Enter the A7R4 which I got yesterday. I need a faster computer. 
So with the A9 and A7R4, I’m set for a while.
Try as I might, I can’t get either camera to send pics to my iPhone. Bluetooth won’t connect. WiFi sometimes does but then nothing happens.
Can someone point me to a video or other easy to learn place I can conquer that.
Also, I had in the past been told stick to Sony glass, and I have. Right now I only have the 24-105. I want a Sigma 35. Any experience with it?
Thank you.

