Most prisons will allow them one phone call on arrival, in which case you might hear from them within the first couple of days, but this depends on whether they can remember your phone number, as their mobile phone will have been taken away. Even if you do get a call, your phone number is not yet officially approved.
When you call a dead phone does it ring?
Answer: A: With a dead battery it should not ring but it should go to voicemail directly.