Public ip for incoming data?

[#1]

I guess the title describes it really.. but if i use PN mobile for a mobile router, is there any chance of a public IP address so that it can accept incoming connections?

It seems utterly bonkers how all the 4G networks don't allow any incoming connections / public IP given the speeds they offer - and with 5G heading our way and 6G already in development it's odd that incoming / public ip is frowned upon.

[#2]

Not with PN mobile, or most other standard mobile providers. They mainly all use CGNAT to allocate ip addresses and as you have discovered you do not get a public ip. There are specialist providers who will provide a true public ip e.g https://www.aa.net.uk/voice-and-mobile/data-sims/ but they aren't cheap!

[#3]

There are three ways to get a public IP address for a mobile router that I'm aware of:

1. use a commercial service that provides a fixed IP address for 4G - these are expensive, and many have data caps
2. use Three with the "3internet" APN - that gives you a public IP dynamic address, so is usable with a dynDNS service. Unlimited data SIMs are available for £20-£25pm depending on the deal you can find
3. use a VPN or L2TP tunnel which will give you static IPv4 and IPv6 addresses - that can be used with any ISP or 4G provider so you can move to wherever the best deal is (or be mobile). I use AAISP's L2TP service for £10pm (which being AASIP does just what it says) but others are available.

Some effort is required to set any of these up, but it can be well worth it.