S4 SlimPWRcard - 0.5mm Thin! QI Wireless Charging Receiver Card Coil For Samsung Galaxy S4 SIV i9500 i9505 With NFC Support

I have to say I use my SGS4 a different way from a lot of people. I have never used the NFC feature for example, and I play a lot of Words With Friends, which means that big screen is lit up a lot. Whatever the reasons, my handset has always run out of power about 9pm. Since I got it I have always carried around a spare charged battery and switched it - takes a few minutes and that way I have a phone than can go for about 40 hours.But one of my spare batteries (from a very reputable make) malfunctioned and I thought I'd try wireless charging. It's this or the official Samsung back panel, which is about £10 more at the time of writing. This really does fit under the back cover with barely any difference to the profile - just makes the fit a little tighter.I have to say though I had problems lining this plate up properly so it would charge the battery. The charging unit would beep to show it saw the coil, but the phone itself was not charging. The instructions seemed to show that you lined up this plate .5cm from the right and .2 cm from the bottom of the battery, or something, but I couldn't get it right.Just this morning I realised the issue: this thin plate has two contacts at the very top that fit into two holes in the back panel of the SGS4 (under the cover, of course) up near the SD card. If you slot those in there, bingo, the unit is lined up and it all works fine. Why not put that in the instructions?Which brings me to the second problem: lie the phone on your wireless charger panel, at night, it slowly charges up. And when it's at 100% - in the middle of the night sometime - it stops charging and discharges. So I got up this morning and my battery level was 80%, not 100% like it usually is. Which means my phone dies in the afternoon sometime. unless I charge it at my desk, which I hate doing, because I always forget to pick it up when I go out.So, yeah wireless charging is clever and funky. But it's not as efficient for me as carrying a spare battery. After six months of charging via USB port and clipping the back panel on and off neither of those bits show any signs of wear or damage - so wireless charging is addressing a problem I actually didn't have, and creating new ones.However, four stars for this unit, because it mostly does what it should. It loses a star for poor instructions - and looking in other reviews, if you want your NFC to work properly, you need to start peeling off labels, but there's no instructions for that either.Note to people who say that heat doesn't matter: in the long term it degrades OLED screens more quickly than they should. So yes, it does matter, and wireless charging does make the phone slightly too warm, in my experience.

The receiver that goes in the back of the phone fits in easily and is thin enough not to cause the back to bulge when re-fitted.The pad does not come with a mains charging plug it only has a USB cable. I found that my PC does not provide enough current to operate the device effectively. Luckily I had a cable with 2 USP plugs on one end that came from an external hard drive unit. Plugging both into the PC makes a lot of difference and it charges the phone very quickly. Works just as well with the USB inserted in to a mains adapter. I guess for most people this would be the main way of charging, just be aware that the current available from a single PC/Laptop USB port may not be enough to properly power the pad. Otherwise great product, so much easier than fiddling with a tiny plug.

After 2 months of use I can report as follows - works well together with the Koolpad QI wireless charger. The phone has to be reasonably lined up on the pad to charge and lies a little off-center, but this is not a problem. Have not experienced any overheating issues as some users have reported with wireless charging devices. Used together with the original S4 charger I also have not experienced slow charging times as reported by some people using these types of devices, I'd say it is definitely not slower than charging via a PC USB cable in this respect. Overall a good purchase.

Bought this along with a Koolpad charging pad an it works really well, but when the charge reaches 95% it disconnects and reconnects constantly. I charge my phone over night so this is a problem as it wakes me up. If I remove the phone for several minutes and replace it it then continues to charge normally. Not sure if this is the pad or the receiver but it happens every time.

I used the original s charger with the back cover and pad from Samsung for 3 months with no problem.I wanted wireless charging with the use of s view cover and that was my only solution. As Samsung was taking for ever to make an original product i decided to go for it.I was little worried to place the order but it turned out to be very reliable so far. Never failed me. The position that the phone needs to be placed is little up on the pad but no problem.Also the back cover seems to be tight on the phone but again does not affect the use of the phone or the s view cover.A lot of people mentioned heat on some comments but for me was minor increase. The same as the original s charger back cover.I also used the phone with the original Nokia Car wireless charger and base with again good results.Using it with the GPS is not covering full on the loss of power but with some adjustments can work just fine.So far i give it 10 out of 10. Hope it will last as long as the phone.

Not the right thing for my s4 .where the pins are it would not stay in correctly so sent back also tried in sons s4 an didn't work so I was glad I ordered an back cover with this already in

I am using this wireless charger through an Otterbox on my Galaxy S4. I had to move it around to begin with to find the best position to always get the charger going but it has worked fine even with the case on. It does get a little hot but i kind of expected this. even with the extra restriction of the double case it still works within an acceptable temperature.

I got this for my S4 Active hoping that it would work. Unfortunately evening though it is 0.5mm thin the terminal contacts aren't and my S4 Active cover is no longer water tight with this in place. I gave it to a friend who has the S4 Advanced and apart for the very slight bump (hardly noticeable) you cant even notice the difference with it in place. So far he says that it is charging up the same speed as with the usb cable and the battery temperature is the same. I will edit this should we come across anything else but so far this product is amazing and the seller gave me 1 white and 1 black usb dust covers for free.As usual, amazons shipping was fast (even to France), this product is defiantly worth 5 stars for its continence.P.S It is being used with the 'Koolpad Qi Wireless Charger Pad'.