How to Set Password on Sony Xperia Z L36h With the following guide, you can rapidly set a password to your Sony Xperia Z L36h phone. Step 1: Open Settings . Step 2: Enter Security . Step 3: Select Screen lock . Step 4: Choose Password . Step 5: Type at least 4 characters to constitute a password and touch Continue when finished. Step 6: Re-type the password and click OK . Related Article : Android USB Drivers for Sony download file now