Hi @Cup Cake,
Thank you for reaching out, and I understand why you'd like to share your plan with your grandson, particularly so he has a way to contact you or emergency services while travelling home from school.
Unfortunately, an iD Mobile plan can only be used with one mobile number per SIM at a time, so we're unable to provide a second SIM with the same mobile number for another person.
If your grandson needs his own number for emergencies, he would need a separate iD Mobile plan. Our Sales Team can advise on the most suitable and affordable option based on how much data and calling he would need.
You can contact our Sales Team via Live Chat or by calling 0800 049 0250.
We hope this clarifies the options available.
Owethu