Hello there.
I'm new here.

My intex aqua fish sees several 4G operators.
But It can't connect to one, which I have SIM from. Only 2G/3G.
"systemctl status ofono always returns registration failed, ril result 2 (I can past all listing or listing of other commands).

Is this the problem about LTE bands in EU discussed in this thread?

I've read several forums and I've tried several things.
I've tried more SIMs from other operators (Orange, T-Mobile, SWAN, I'm from Slovakia). These SIMs can connect to 4G on other phones running android.
I've tried coderus patch and ofono. I tried flash firmware droid-modem-l500d-eu and revert it back to -in. I've tried several handlings and edditings with /etc/ofono/ril_subscribtion.conf and in /var/lib/ofono/files. I've tried these on sailfish 2.0.2.51 and early acces 2.0.4.13. I hope my APNs is setted correctly. Nothing helps.

Any idea? What I'm doing wrong? What else I can try?

Thanks for any reply.