Reviews: can it charge an iphone 4s with an external qi receiver cover?

Allfei: Yes, if the cover/case uses the qi technology, it works. ( Oct 14, 2016 2:41 )

Reviews: Once it is charged, can it be disconnected from the power cable and still wirelessly charge?

Allfei: Yes ( Sep 10, 2016 22:42 )

Reviews: Does it use nfc?

Allfei: It does not use Near Field Communications. It's strictly a wireless changing power bank. ( Aug 18, 2016 9:54 )

Reviews: Can it charge a tablet or iPad with a QI receiver?

Allfei: It can charge any qi-enabled device, however we do not recommend charging a tablet: it doesn't work optimal, in our experience. ( May 15, 2016 11:16 )

Reviews: Can I charge my qi enabled smartphone while charging the qi stone (via qi or cable)

Allfei: Yes on both. ( Apr 4, 2016 19:23 )

Reviews: Does it burn up your battery

Allfei: I have been using mine for almost a year now and haven't had any issues. My battery still is in excellent condition ( Mar 4, 2016 10:11 )

Reviews: Can you use it constantly as a primary charger

Allfei: Yes definitely ( Nov 11, 2015 19:22 )

Reviews: Can this be used with Asus android tablets? 10 inch?

Allfei: I am sure it can ( Oct 19, 2015 10:3 )

Reviews: Can you charge your phone in your pocket with this?

Allfei: Its possible if yr pocket is tight fit so that the QiStone+ & phone will not move around. ( Sep 10, 2015 20:44 )

Reviews: How do you charge the Qi stone?

Allfei: Just with a typical android phone charger ( Jul 7, 2015 17:32 )