Samsung mobile phone download software cannot be installed? What if I can't install it?

1. Below we take the Samsung S5 series handset As the example, we click the handset "the application".



2. Find "Settings" click here to enter.



3. Click on "Security" in this image below.



4. We will see an "unknown source" on the Open Security page.



5. When we select the unknown source it will pop up a confirmation box, we click "OK".



Tick the page.



Experience sharing

Sometimes we are not the reason to install the software then we can download the software or you install the software is not apk format, these we can try, there is a way to use the QQ mobile phone assistant to connect the computer and then in the QQ mobile phone assistant installation software to see OH.