QUOTE(tai_digidestany @ Oct 22 2019, 11:30 PM)
I'm currently having two;
1. Unifi Air (subscribed on 22nd October 2019)
2. Digi Infinite 150
Currently I'm using modem Huawei B315s-607 with these band specs;
HUAWEI B315s-607:
4G Band 1/3/7/8/28/40 (FDD 700/900/1800/2100/2600 & TDD LTE 2300Mhz)
3G BAND: DC HSPA+,HSPA+, HSUPA/HSDPA/UMTS/900/2100 MHz
GSM BAND : 850 / 900 / 1800 / 1900 MHz
At the same time, I also have iPad Pro 11.
I conducted test to see the speed.
So here's my result.
a. Unifi Air
i. Speedtest direct from iPad

ii. Speedtest from wifi (Huawei)

b. DiGi Infinite 150
i. Speedtest direct from iPad

ii. Speedtest from wifi (iPad)

Hence, looking at the result, it is the modem that forbid my Unifi Air to reach its full potential and DiGi have the best speed either direct or wifi.
In which it makes me think and I really need to have your guys advice here;
a. Which line i need to terminate?
b. Should I get Huawei B618 to replace my current Huawei modem?
Your kind advice is really appreciated.
Hard to answer your questions when certain important information are missing from the big picture, perhaps you can help by telling us more:
1. your usage, what do you need from your internet?
stable ping/no spikes internet for online gaming?
high speed because you are heavy download user?
you are a streamer or content creator that would appreciate more upload speed for streaming or upload to YT?
2. can't really tell if your modem is bottlenecking your internet because i dont know if you did lock to a certain band or just leave it by default? or what band it was locking, probably just because of default your modem is connected to the strongest signal, but the slowest/most congested band, while your ipad connected to to other more unique band, just way too many unknown/not specified variables in your case