I'm looking at buying a Galaxy S5 here in the Philippines. My concern is this: I believe the phone comes with Kitkat 4.4.2 and that's all fine and dandy, but how or when can I upgrade to Lollipop 5.0.2? I'll be using a local sim card from Smart. From what I understand I may have to root the phone to be able to get software upgrades. I'm hoping that is not the case. Thoughts?