Why would you be keeping an 5S "still going" when you can buy an 8, SE, or an X/Xs/Xr, for a song and get vastly better performance, battery life, wifi and cellular?
The A7 is dogshit slow - I have an iPad with the A7 (or maybe it's the A9) and it's unusably slow for even simple things like apps from newspapers and library e-reader apps; you can watch the page assemble. Even waking the iPad with the home button is slow. On my A11-powered phone these apps run smooth as butter.
A 5S supports 11 of the LTE bands versus 24 bands of the 8. That alone is worth the upgrade, for the greater chance of being able to make or receive an important call.
How much time are you wasting on silly work-arounds just to be a retro-tech hipster pretending it's cool to use a completely outdated and inferior-in-every-way piece of hardware for absolutely no reason?
