Had a new SIM card for my daughter who will be using an old phone that is 4g only. The SIM card won't activate in the phone.
My own SIM which used to work in this phone also will not activate, but a works SIM on Vodafone has no issues so it's clearly a network rather than phone issue.
Is ID trying to remove 4g access or would you expect this to register.
Phone is a Xiaomi Mi 6