I need a router, done with diy ones

[Notconnected]

Is there such a device that can be wired to my switch, and connect to my mobile phone
wirelessly in order to provide internet to all devices on the switch, that I can buy and just
plug it in and connect to my phones hotspot.

I had an OpenWrt based Pi4 that was doing very well, until it disconnected from
my phone last night, no amount of investigations, re installing was a failure too.
Am thinking hardware, as one second the interfaces would be up, the next they would
be marked as disabled, I spent a day on this, not going to buy another Pi4 with a case
a power supply and a new card, because am not sure the one am using is good, as it
did not accept changes saved to it from the command line, such as uci commit wireless.

Any way, I appreciate any advise, thank you all.

 

[Tech9]

Is there such a device that can be wired to my switch, and connect to my mobile phone
wirelessly

You need a router with WISP (Wireless ISP). GL.iNet travel routers have this feature working well. You have mentioned location in Europe in previous threads. I see models under €100 on Amazon Germany. You don't need anything latest and greatest for your use case. Something like this will be good enough:

GL-AXT1800 / Slate AX

Slate AX (GL-AXT1800) is our first Wi-Fi 6 travel router comes with 1800Mbps combined wireless speed. Subscribe to our newsletter to receive latest product update!

www.gl-inet.com

 

[Notconnected]

You need a router with WISP (Wireless ISP). GL.iNet travel routers have this feature working well. You have mentioned location in Europe in previous threads. I see models under €100 on Amazon Germany. You don't need anything latest and greatest for your use case. Something like this will be good enough:

GL-AXT1800 / Slate AX

Slate AX (GL-AXT1800) is our first Wi-Fi 6 travel router comes with 1800Mbps combined wireless speed. Subscribe to our newsletter to receive latest product update!

www.gl-inet.com

Thank you @Tech9.
WIll this plug into my switch hand out IP addresses to the connected devices and provide internet access to all the devices on the switch, or do I need to put a sim card in it to make that work.
I will have a look for one later, when my eyes stop watering, picked up a bug somewhere yesterday, its like reading in the rain with glasses.

 

[Tech9]

The device has LAN ports, will provide Internet connectivity to whatever is connected to it like any other gateway. Just the WAN connection will be wireless (the WISP option) to your phone's hotspot.

I still believe with coverage in your location the best approach is gateway with SIM card from the same operator. I had to use mobile Internet service for some time in Europe, the plan was 100/40 for about €15/month with no contract. The operator provided some ZTE 5G Wi-Fi 6 residential gateway.