I've read several times that I should replace my S20 because it won't get any more updates, inducing security updates. What are the real drawbacks for keeping it as long as it functions well (which mine does)? I don't keep much on my phone, regularly deleting photos that I've moved to my computer or just have no interest in. I delete text threads after the thread's purpose has ended. I do have a contact list, with people's names, phone numbers, and email addresses.