I successfully installed telegram(f-droid), lite, WhatsApp tweetcaster youtubeMate (uptodown) and many more from blankstore. Recommend trying OsMand (f-droid) instead Maps.You'll find problems or FC with google dependant apps. Was impossible to run Instagram. I'm still thinking that google simply is not supporting old arm devices neither do actual apk devs.
Recent Hardlight's work opened the way to do it (deodexed it's OS2SD rom and patched it for signature spoofing for us) and worth it to try microG. Marvin's and ale5000's threads are well and easy explained.
Peace for you all
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