C5400 cannot do that. the USB port on it is just for sharing USB drive files, not for 4g connection. what you need is 4G router, like MR200

that's strange. I never notice that. how could you tell it broadcasts another channel? do you have any screenshots? and both 4530 have the same issue?

did you connect the additional one to your PS4? not to the router or sky hub? when you add an powerline adapter, you just need one, pair it with the existing one (any one), and that's it. Only one...

cannot do that with powerline adapter. have to connect the main powerline to the router via LAN

what do you want to do with the other adapter? you can only connect it to a pc or other Ethernet device to get internet. and that's how adapter works. one connect to router, other one connects to...

if only the huawei phone has this problem, it may be a compatibility issue. maybe you can report to huawei support to see if what settings can be done on the phone or on the router