A:AnswerIts meant to keep your phone from dying until you get to a reliable charger not to be an actual battery. I understand your frustrations but it was made as an emergency purpose device not 911 but more for "hey my phone going dead let me plug this until i get home to get my charger
A:AnswerNo you can use it on non Samsung phones but keep this in mind, on certain products like the fast charging wireless charging pad, you can only use it on Samsung phones with wireless charging or other phones that support wireless charging although you won't be able to use the fast charging feature on non Samsung phones. You can use the portable battery pack and the fast charge car charger on non Samsung phones but you won't be able to use the fast charging feature.
