my iphone and the outdoors are my office. I create inspection reports for the company I work for, and I've had other phone coolers that could not survive the heat and humidity of the mid-Atlantic area. Until I found this cooler. I normally run the cooler off an additional battery (so as not to drain my iphone). Since I started to use this magnetic cooler, I've noticed no degradation (battery life, nor screen dimming) on the iphone while working outdoors for 6 hours. In fact my phone is able to last longer on normal battery life without a need of a recharge. Best magnetic cooler for phones.

The battery on my phone gets so hot from all the abuse I put over the years. I have a Samsung S8 (I know...) and its battery gets hot from playing candy crush lol XD. I was about to toss it but decided to try this phone cooler. I'm so excited to say this works soo well!
I put it to a test playing Call of Duty. First, I noticed how silent the cooler is. Second, the conductive cooling really makes a difference as it lowers the temperature dramatically. I was able to play for hours and my phone kept the same temperature that it had before I started playing.
Before using this cooler, I could only play for about 30min before the game started to stutter and lag. Now I can seamlessly play for as long as I want!

This Phone Cooler Semiconductor Radiator is pretty amazing in delivering a cool surface when it is turned on. I used a thermal imaging camera to record the temperature of the cooling pad's surface before and after it is turned on. The temperature recorded with the power turned on is about 25 F lower in temperature. It also feels pretty cold by the hand of the surface.
This cooler can be used in a variety of applications beside cooling the phones.

We all know how hot a phone can get when you are playing graphic intense games, watching HD videos, streaming, or changing. This well-made cooling fan is a great option to help keep your device from getting too hot. The is to remove the phone from any case as the fan has to physically touch the back of the phone's back metal covering (although I could see it could also help with glass back models) to properly cool the phone much like a heatsink/fan does on a computer processor. With this unit running and attached, I experienced a noticeable drop in temps and heat radiating from the phone. The fan's noise level is not bad at all. It charged really fast and the battery appears to last a respectable amount of time with realistic amounts of use time. A great accessory for those that play a lot of graphic intense mobile games, do a lot of streaming or HD video watching, or just max out their phone's capabilities a lot.

This thing I couldn’t even tell it was on. Only way I found out it was on was how cold the back side gets. The part that touches your phone. I’ve never used on before. I don’t know if they are all like this but it’s gets almost too cold to touch on the back side. I was crazy impressed how cold it was. Being an advent battle royal playing this is a plus. I got one recently with high hopes . This thing hear is amazing