Probably, this is because Facebook pays more to Infolinks that's why Infolinks display most advertisements of Facebook. Well, this is not a problem. Its just a case of paying more.
And, I advise you to stop using infolinks because they simply irritate your blog's visitors. Its my own experience.
And, I admired that your blog is more about Blogging rather than Android. So, most of the bloggers know that you have added ads for earning and this is a fact that no blogger want you earn! they never click on them. And, this is the simple reason of your no earning.
By the way, your Blog's content is not unique (sorry). Try to post unique content and increase the number of your pageviews (about 1K-2K) and then, try out Adsense. Its best!
Tip: You can also try Buysell Ads (not now).