Mysteriously, the heavy hitters making battery cases for iPhones (Anker, Mophie, Apple) have gone missing and it’s apparently now up to the market’s small Asian case makers putting out questionable quality/style products. What happened? The innate battery capacity of iPhones just doesn’t serve a significant portion of iPhone users and upgrade decisions are in abeyance until this issue is clarified. Is it the USB micro’s limitations; the ability to incorporate lightning or USB C connectors into a battery case; heating? The absence of an quality protective battery case, though ancillary, is a real takeaway from the upgrade experience, one which reduces the modest improvements of the X generation. Any informed intel?