So As I believe, In India, We can't join server either realm, if we have 5g phone, I tried on my old phone and I can join but not on new 5g phone, it will say unable to connect or disconnected

In India, we can't join realm, neither server with our own Network, if our phone is 5g then we can't join, only if we use vpn, and that's horrible, please fix it, I tried on my old 4g phone and I can easily Join without Any problem like unable to connect, Disconnected vise versa