Yes, the police can often search your phone during a criminal investigation. But exactly how they do that depends on a few different factors.
For example, similar to searching your home, the police will often start by asking for your consent. They may want you to unlock the device and allow them to look at your text messages, your search history or your location data. You do not have to give them consent.
If you do not, though, the police can sometimes get a search warrant. Once this warrant has been authorized, your consent is no longer necessary. The police have obtained the permission they need to search your device and gather the evidence they seek in your case.
Who else has access to that information?
Another thing to keep in mind is the third-party doctrine, which recognizes that another entity may have access to the information the police are seeking. If they can get it from that third party, either through a search warrant or a subpoena, then they may not need to unlock your cellphone at all. You have a reduced expectation of privacy when you have voluntarily shared that information with someone else.
For example, while facing criminal charges, the police may believe you were sending direct messages using a social media app. But even if they cannot unlock your cellphone to read the messages on your end, they may be able to get a record of those messages from the social media company.
Cases like this can become very complicated, especially if you believe the police may have violated your rights while gathering evidence. Be sure you know exactly what defense options you have.
