Hi there, everyone!
This post enquires about the issue of a Huawei B525s router dropping signal on 4G on Mobily network. Please see more details below.

Source: http://www.e-winkyzg.com/sale-10791957-huawei-b525s-65a-4g-lte-cat6-wireless-router-up-to-300-mbps-download-speed-with-sim-card-slot.html
ISSUE DESCRIPTION
I'm in Saudi Arabia and currently using a Mobily SIM card for the 4G network. Yesterday I bought a Huawei B525s router, installed the external antenna which came built-in. I have two questions:
HUAWEI-B525-F92D;
HUAWEI-B525-5G-F92D.
I would like to ask why it's showing two types of WiFi?
2. It keeps dropping the 4G signal, while this area is good in terms of 4G coverage. It shows 3 lines of signal on 4G, but it doesn't browse at all. Very annoying.
POSSIBLE SOLUTION
I have to select now 3G only. It's working on 3G, while receiving full signal. Could anyone please help me solve this issue of a Huawei B525s router dropping signal on 4G on Mobily network? Perhaps it needs some further configuring?