Does Ireland have fully functional 5G technology?

The maximum speed of 4G is 100Mbps. Never in my life have I gotten anything like 100Mbps on 4G. I upgraded my phone last year to 5g and my home Internet is 5g. The difference in speed is very noticeable. According to fast.com, on my home Internet I'm currently getting 52Mbps.

So the 5g might be 10 times what you get with 4G, but you were not getting the full theoretical amount from 4g anyway.

likely connecting to 4G+ then which utilizes carrier aggregation, rather than standalone 4G

It is long time since i've seen 4G+ on my B818, i think 2023, but then three started messing around - 4G no matter what, speeds still OK, dropped by ~50-70Mbps

5G is somewhat worse on DL while connecting to the same mast with ZTE801

What speeds are you currently getting?

I'm on 4g at the moment and getting 10 Mbps.

The 5g I have at home is at least 5 times faster.

I have a three 5g router and the best speeds at night I get with the router just sitting where it's convenient is ~250Mbps, which more than meets my needs. With 4g+ the best speeds I see on my phone in the same location are ~150Mbps so not quite double the speed. In my previous home I was lucky to see ~50Mbps with 4g+.

Signal quality, congestion, phone, router, chipset, Wifi type, Wifi congestion, internal and external obstacles etc. will all contribute to the best speeds you get. I doubt anyone is achieving the 1Gbps (realistic) broadcast maximum of 5g. In practice the best speeds I've seen have been ~500Mbps for 5g, which is significantly faster than the ~200Mbps max I've seen on 4g+, but in reality there's very little difference between those speeds unless you're downloading a large game or movie.

Seems reasonably fast in the middle of Cork City on Eir. I was just randomly testing it the other day.

Upload's a bit pedestrian though.

iPhone - just wandering around in the city centre.

I've seen a couple of >1mbit/s on the phone too.

It seems to be highly dependent on where you are - shouldn't make any difference whether it's a phone or router, as long as it's a 5G service and is compatible with the bands available.

Also bear in mind that Wi-Fi may be limiting the speeds from the router. Depending on how good the Wi-Fi setup is, and what the devices are capable of that you've connected to it, it's quite feasible you will never see 1Gbit/s even if the 5G is capable of it. Realistically a lot of Wi-Fi 6 routers won't deliver those speeds in real world conditions —especially cheap / low spec ones, which the mobile network provided ones likely are.

i read Eir - must be the only 5G mast in the region and they make it stand out :D