For 2 days now, my 2300 (B40) band is not picking up any LTE-A/LTE+ towers like it has done forever. I only get connected to LTE-A/LTE+ when I use the 1800 (B3) band. Even if I'm on an LTE+ tower using B3, as soon as I aggregate with/change to B40 (2300) it drops to LTE. Any ideas? It happened out of the blue and I hadn't changed anything - I have a Huawei B818. I live in Assagay (Hillcrest).