Suspected of a criminal offence, detained in criminal detention, unable to see family members, unable to contact by phone without permission.
I can only entrust a lawyer here to send you messages and condolences. Criminal cases are criminally detained. I suggest that you entrust a lawyer to intervene as soon as possible to help you meet and understand the objective case, apply for bail pending trial, defend him, and plead innocence or guilt according to the case.
So as not to delay the best time.
So it's normal for the phone to be disconnected.
If you are not satisfied with the results of the tobacco bureau.
You can sue in the local court, explain your request and seek to defend your friend.