How to make a Mobile 4g Proxy?

Just wanted to know if someone could point me in the right direction how you can make multiple mobile proxys?

Thought about making these to use for instagram.

Do you need one phone per proxy/ip?
What about Data tarif, habe to buy xx GB/months tarif in a cheap country?

Any information would be helpfull.

bump , interested too

theres a guide here if this is what you mean.
https://dzone.com/articles/guide-to-make-your-own-proxy-for-more-ips

Why you are going into too much hassle instead hire IPs from providers who does all for you and you use with peace of mind.