Just like I don't get 100 IPv4 addresses on my phone, I don't get a block of IPv6 addresses. There is nothing I can do about it. IPv6 changes nothing in that regard, effectively.
Except that with IPv6, your telco could delegate you an entire /64, or potentially less and turn your phone into just another router in the network.
Just asked my friend who is on Verizon, when he is tethered to his phone his laptop/computer gets a full globally unique IPv6 address, every device that is tethered gets one. So it already exists.
> Just like I don't get 100 IPv4 addresses on my phone, I don't get a block of IPv6 addresses. There is nothing I can do about it.
Sure you can. Do the thing the people whose ISPs give them zero IPv6 addresses do -- use a tunnel broker. Or a VPN provider that gives you a real IPv6 address block.