DO NOT BUY! I ordered two chargers: one for my roommate, and another for myself. Luckily, my roommate didn't use his. If he had, then THREE phones would have been damaged. If you have a case on your phone, you need to remove it every time you charge it. After two days, I have two ruined phone cases. If you try to use your phone while charging it, the charge will be intermittent, and the "powerful magnet" will constantly disconnect. Also, when you charge, the estimated charge time is nowhere near accurate. It told me that it will take 1h 37m to charge, and after just over 5 hours, I was at 86% only. Now that I have used this charger on BOTH of my phones, the batteries for each have become compromised. A full charge will only be good for a couple of hours now, whereas it used to be good for the majority of the day. All in all, this is a GARBAGE charger. As great as it is that I can put it between my teeth and shake my head without destroying it, this is by far the worst charger I have ever used. I will likely be returning both chargers, with invoices to repair my phones.