Hey @a15 bro.
For some reasons, I'm not able to access your blog, it says "thechipped.com redirected you too many times."
Do check kindly check this and fix bro. And regarding your queries, these are my views:
I don't really think so bro. You should definitely post them for good social media traffic. Say a blog post like "iPhone 8 will have USB Type-C: Officially confirmed!" I'm sure this post will be viral amongst all the iPhone (and Android) lovers. Try to do this consistently and submit your blog to Google News.
Both bro. But don't produce more content until you have improved your previous 40% content. Suppose if you have an old article which says "Best Android Battery Tips", it might be outdated right, so you can update it properly with the latest OS tips as well.
For the last 2 queries, I'm not able to access your blog now bro. Let me know if you can find a fix, else I'll see what can be done. Best wishes.