First of all i'm gonna explain my issues and goals:
Issues: I live in a shared flat and the only modem/router is in the garage (landlords are not willing to afford those fixes, which is awful), It might be around 5 walls away from my room, which means the signal is very poor.
Goal: Since I've got those 2 spare modems (on the post title), I want to create an access point (with one of those modems) using an internet cable and place it in the middle of the corridor.
What I've tried:
Firstly I tried to manually set the Vodafone Ultra Hub Plus into access point (because I couldn't find any straight settings on it to turn into an access point/bridge mode), disabling DHCP and so on, but the results were not very good. The 5Ghz wifi networking seemed to work ok, sometimes it was loosing connection/not connecting. The 2.4Ghz was not working at all, but I could connect it.
Today I tried to use the Huawai B618s-65d. This modem has the bridge mode on it, however I couldn't even connect to both wifi networks (2.4 and 5.0)
I've been connecting the ethernet cable from LAN port (main modem) to LAN port (secondary modem for the access point trial).
Main modem model: NetCommWireless - NF18ACV, I haven't tried to access any setting on the main modem yet.
I'm even considering buying a TP-Link Powerline to see if it works reasonably ok.
As you guys can see, I'm not experienced on those matters.
Any suggestions guys?