Share your experience!
which carrier network do you have?
have you contacted them regarding their 4G coverage in your area?
Problem solved, your phone it's not compatible with Movistar's LTE band, it seems that Movistar's LTE use 1800, andyour device does not support such band
2(1900), 4(1700/2100), 5(850), 7(2600), 12(700), 13(700), 17(700), 28(700) - E2306
This is the available info
4G LTE Claro 1800Mhz;
4G LTE ICE (Kolbi) 2600Mhz;
4G LTE Movistar 1800Mhz;