Police recently took my phone and accessed over 6000 deleted text messages ranging back over 3 years I have been given a print out of these texts from the police as there being used as evidence and also messages sent on what's app to, I had an iPhone, I never thought in a million years they would get what they did. Trust me they can get everything up. My case was a supply class b case which I don't think really matters if they want to get in your phone they will
Well, with a warrant, the police can get that info from your cell provider whether it was deleted from your cell or not. The cell phone company keeps your records for quite a while.