Are criminals who are held for non bailable offenses allowed to use their phones in jail?

He was arrested a few weeks ago for rape. The investigation is still going on. I have an hour till I can call the police to check. Which is why Im asking here.

There was some activity on his social media (gained followers on his private account). Is it possible he is out? He had not applied for bail till I had asked the police this week.

Is it possible he has been released and I have not been informed or is it normal to get your phone once in a while?

(I have already asked this on a legal sub)