the band
signal bar dont always translate to speed
low spectrum band 5 8 20 built for coverage not for speed
band 28 still ok because only accessible with manual lock
nowdays have to lock band for the speed
lesson learn from webe, yes, umobile. now all telcos

the tower
urban area with many tower, some small tower are repeater
limited bandwidth, limited coverage and capped speed
parabolik antenna installer secret is aim to the main tower