if a device has never been registered to a person or connected to a mobile network or had a SIM inserted, is anyone liable for the data on that device in criminal charges

The legal liability for data on an unregistered device that has never been connected to a mobile network or had a SIM card inserted can vary significantly based on jurisdiction and the specific circumstances surrounding the device and its contents. Here are some general considerations:

**Ownership**: If the device belongs to an individual or entity, that owner may bear responsibility for the data stored on it. If the device is found in a context that suggests it was used for illicit purposes, the owner could potentially be implicated.

**Possession**: In many legal systems, possession of a device may lead to presumption of liability for its contents. If a person is found with the device, they might be questioned about its contents.

**Data Privacy Laws**: Various jurisdictions have specific data privacy laws that may protect certain types of data. These laws may influence how authorities handle data on a device and who might be liable.

**Circumstantial Evidence**: Authorities may consider how the device was obtained and the context in which it was found. If the device is linked to criminal activity, the situation could lead to investigations involving potential involvement of the person in question.

**Legal Representation**: Individuals concerned about liability regarding data on a device should consider consulting with a legal professional who specializes in technology or criminal law in their respective jurisdiction.

It's crucial to consult legal authorities or professionals to get advice tailored to the specific situation and local laws.