My daughter has set up her new code and transferred the number from her old number from her previous network via PAC code. However, she is currently unable to complete to make or receive calls from her new phone. If she makes a call it rings out but the recipient's phone does not ring, and if someone calls her, their phone rings out but here phone doesn't ring. She also cannot send or receive SMS messages. Completely at a loss how to fix it. Phone is an iPhone 15.
Any suggestions appreciated.