This happened over in the United Arab Emirates due to a very strict privacy law they have. The law says “married couples are forbidden from accessing each other’s personal phones without permission, even if one of them suspects the other of cheating.”
The sentence is for 3 months, and yes, it’s just because she went through her husband’s phone. Apparently the husband had been cheating in the past, talking to other women. He says that she would get into his phone while he was sleeping and copy all the information over to her own. That way she could look through it later when he wasn’t around. He also claims that she was sharing information about him with her siblings. Again, they’ve got some seriously strict privacy laws over in the UAE. This doesn’t make it right, of course, at all. But the fact that the husband actually sent his wife to jail for looking through his phone raises a lot of debate.