Michael is worried that his Android phone isn't safe, especially with the text messages he gets from random numbers. Leo says it used to be vulnerable, but both Android and iOS have been patched and SMS text messages are safe, as long as he doesn't open the links he's being sent.
John recently switched to the Android platform. He's liking it, but there are a lot of differences. Is it secure? Leo says that it is, but it is open source. He doesn't need an antivirus for his phone, but it's important to keep the phone updated. John should make sure his manufacturer and carrier is consistently making updates every month. Apple doesn't have that issue because Apple users always get the latest updates pushed to their phones with no middlemen. Android isn't that way, so some updates will be delayed by the manufacturer and some by the carrier.
Bill recently got Eset's Smart Security version 6. It's great because it can track his laptop in case it gets stolen. He's having trouble signing up because they want his existing username and password. But he doesn't remember it. Leo says to call ESET and get support to help and if that doesn't work, send Leo an email and he'll help him out.
It sounds like the one he got is an enterprise edition, and is meant for sys admins to install on all Android phones in a company. They're used to seeing this, it is normal, and he could go through it and use it on his phone. In general though, Leo doesn't put any high end security software on his phone. He does use a free program called LookOut, but he doesn't think anything more than that is necessary. But he paid for the software, he might as well use it!