*#*#4636#*#* ➡ phone info/testing ➡ scroll down to and tap 'network preferred type' ➡ set to WCMDA only (if wala 4G signal sa inyo) & LTE only if meron.
*#*#4636#*#* ➡ phone info/testing ➡ scroll down to and tap 'network preferred type' ➡ set to WCMDA only (if wala 4G signal sa inyo) & LTE only if meron.