This is a very helpful list. Actually I'm avoiding/doing some of it and so far i can say that my phone is secured.
1. Lock your homescreen
Always do this keep your phone privater against other people or even from your prankster friends. Just a tip, much better to a password or fingerprint scanner (if your phone have one) to unlock your phone instead of pattern because others can decrypt it by just looking on the dirt/moist remain on the screen of your phone.
4. Stop jailbraiking or rooting your phones
I did this before for deleting my data usage but I stop doing this already. Is there really bad effects of rooting your phone in terms of privacy?
6. Update your phone's software regularly
I never did this because I believe that updating softwares are best for the latest phone models of a particular brand. I thought that your phone becomes slower once you do it on a phone which is a little bit low tech. Is that true or a hoax?