Carrier HELP, 2G/EDGE carrier problem

[sucupeva]

Hi, im from brazil and the carrier (VIVO) here is having a problem for more than a year, the problem is coz some mobiles dont work 2g in my city(here have only 2g), the iPhone 4 works 2G, 5 and 5s dont work, galaxy s3 works and s4, s5 dont work, LG G2 works... So i tried everything and no sucess, today i want try new ideia, i want do jailbreak and change the archive carrier put the archive from iphone4 on my 5s or something like that to see what happends..

and dont need say to go to the carrier store and say something coz here dont have any support.

sorry about my english and HELP PLEASEEEE