Hi everyone, would really appreciate your expert advice, as I only have a few hours experience with OpenWRT so far. I have a router Tp-link TL-WR941ND rev 3.2 with Latest openwrt installed: 18.06.9; as it is 32/4, there are no further versions. Single 2.4 radio. Internet will always be shared to the router by wifi from my Iphones and Android phones, I have 4 of them, no other sources. The router will have one constant Wifi AP network (with a fixed name/password) and few LAN connections. So far I've managed to connect the Internet from the first phone, all looks good - both router's wifi AP and LANs are working (I am fine with 2,4 being cut in half due to both wifi's - as it is the only way how to feed Internet to the router, no USB it has). But I am struggling to build the same structure for other sources from phones, would appreciate your guidance on how it should be set in LUci (no command prompt, afraid its too complicated for my level). So the idea is - I use first phone up to it's monthly internet limit, then switch to the second phone, then to third and so on (obviously only one source at a time). In addition, if such switch could be done somehow by the batch file straight from Windows or something more easy/quicker than entering into router's interface - that would be great, but if not - its also fine. I just want to use this router (found it in the recycling center, want to get it to full working mode), not planning any purchases.
OpenWrt 18.06.x has been EOL for over half a decade now, it does contain numerous known/ unfixed security issues and shouldn't be used in any capacity anymore (yes, that means this particular device is no longer be viable). The very limited system ressources already put a tight cap on it during the 18.06x time frame, so even ignoring (which you shouldn't) the serious security issues, there isn't much beyond the bare basics possible with this device anyways (and please don't expect much help for a 7 year old release, time is going on and OpenWrt is changing).
This version is very old. It has been EOL and unsupported for many years. It was released in December 2020. In the ~4.5 years since then, there have been many serious security vulnerabilities discovered, making it unsafe to use in pretty much any context, especially as a router in a network. Further, the syntax of OpenWrt has changed significantly in the last 5 versions, so you'll likely end up with problems trying to use it now because people will not remember the correct syntax for configuring this old version.
You should reconsider this. You can pick up devices that can run modern versions of OpenWrt pretty cheaply, especially on the used market.
The travelmate package is designed for your use case but I don't know if that router has the resources for it. 4/32 is severely limited there is a reason it was in the scrap bin.
Thank you all, indeed travelmate was the best option, but... not for this level of technology. So will definitely keep it in mind once I will find a more recent model. For the time being I'll just settle with the manual switch between ISPs in wireless, it works fine. Fully agree on security comments, but since I connect only sporadically and main time it is the smart (dumb) TV connected - I am fine with the risks. Still, its nice to have this old piece of technology working fine.