Will Secure BlackBerry work without a BES SIM card? No, it won’t. Without a BES SIM card you cannot have Secure BlackBerry pushed on top of your BlackBerry device. Updated on August 30, 2017 Tagged: FAQs Was this article helpful? Yes No Related Articles What services does the Secure SIM card offer? What are the benefits of having a Secure SIM card? Do Secure SIM cards come with an unlimited global data plan? Does Secure SIM offer voice minutes? Why is Secure SIM better than the SIM with my mobile operator? Why do I need a SIM card on Secure Phone?