Not really a question about Internet coverage but about Network Coverage as a whole.

I've been using 48 months for ages and have always had fairly patchy network coverage.

Often when I check my phone I'll see it has no signal - I search for available networks and it shows (as right now) that my phone can detect "IRL-METEOR", "vodafone IE", "o2 IRL" and "3 IRL". 

Occasionally it will also show 48 months and my phone connects, but more often 48 isn't shown so my phone won't connect.

I don't understand this since 48 is supposed to use the o2 / 3 Ireland network.

Why can my phone see these, but not connect to 48?

Is there any workaround? Otherwise there isn't really any altertive but to just give up on 48 and move to a proper network (only going to cost me an extra few euros a month at this point, but if it means I can use my phone it's going to be well worth it)

Is there a seperate network map from this one from 3 Ireland?