I had to read your post a few times before I understood what you were asking. Some punctuation in there would help out a bit. I don't think the 51.... is going to work in your phone. (Ah Tim posted already).
BYOD meaning you purchased the device not directly from Sprint or a device that is not sold by Sprint but compatible with them such as Pixels and Moto devices.
These are the compatible sim cards. The 516TQ is not compatible.
Business reasons are the only reasons I could see for this being so seemingly very important. That makes sense.
But I don't walk and stare at my phone. At least not after a certain spill I took while walking home from work one night while trying to text my (then) other half.
I recommend others not walk and try to surf simultaneously, either. If your moving feet are involved, chances are your eyes should be as well. Nothing on Facebook or Twitter is that important.
Yes, seriously. It's your opinion and I have mine. I don't need your permission for that. But pretty much any store I frequent I have the wifi credentials saved to my phone. It's quite easy and I can talk and surf most everywhere I go in this fashion (though I wouldn't care to, really).
Also people need to stop stressing about always being connected 24/7. Enjoy the damn conversation and post ignorant selfies later.