Well, I would say the antennas don't work well with LTE. They work superb on DC-HSPA+ and lower.
Then, LTE towers are very stable and usually only one tower for each band (1800MHz and 2600MHz) in an area, so it doesn't matter because in the end you only have one choice for each band.

I tried before but in my area, single panel works better.

whats the diff between max4g,maxisbb?i even saw apn blacktubi

got example ald  just for those who is daredevil can try