Black SharkMagnetic Cell Phone Cooler 4Pro, Portable RGB Cooling Fan, Cellphone Radiator with Removable Grip, App-Controlled Smart Temperature Control for iPhone MagSafe Series/Android/Tablet/iPad

Cold as block of ice or at least very close to it. Magnetically attaches through my iphone case. My case has a ring stand that may help but all I know is it works well and I see no need to remove my phone from the case. It's quiet and the led lights are a fun little addition. I loaded the app that came with it which allows you to try different light and color motion options. There's a few good ones I really liked and all of them are customizable for color and speed. Even though it has nothing to do with cooling my phone, I still liked it. Feels well made.My only gripe was that it took me about 5 tries to get the optional spring loaded grippers to attach since the instructions didn't say much. Keep trying, press down in the direction the phone would be located and it eventually snapped. Since the magnet works well for my case, I won't be using these. Once installed, I could see they did fairly well. They do give me the option to cool from the screen side which might be a bit more effective if you didn't need to see the screen. However, it really seemed to be doing a good job from the back through the case. I don't think I'll need this option

I picked this up because I was going to be playing Pokémon go fest in the hot central Florida heat. This thing cools down quick and it really helped keep my phone from overheating and lagging. The magnetic connection also made it really easy to pop on and off so I could share it with nearby friends if their phone started overheat. This worked very well from my iPhone in particular because I just use a bumper case which has the back exposed. So I can’t speak to how it works through a thick case. One extra perk of this wants to put the cool surface onto my neck for a quick little pick me up in the hot heat. Highly recommend!

Item is exactly as described. However what I wasn’t expecting was the cooling power this thing puts out. I genuinely thought this thing was going to just be a little fan to push hot air off the back of my phone. Nope. This is a legit cooler, you turn the thing on and the back of it gets ICE COLD. It’s extremely impressive. I purchased it to reduce temps while playing a game I downloaded. The phone was getting hot enough to burn your skin. Put this cool on it and the phone doesn’t put out any heat at all. Playing the game with the case on, and the cooler on over the case, I can start to feel the coldness from the cooler come through the screen. This thing is extremely impressive and I wish I had found it sooner. Would recommend 10/10.

I love this cooling device. Works very well, I am a roofing project manager, so I do roof inspections and small repairs. My phone will get super hot but with this I am able to keep using my phone.The magnet aspect is great! I have a Galaxy Z fold 7 and it sticks to my phone really well! It gets super cold quickly.Only downside is that it had to be connected to a power source. That's the reason I took a star! I have to carry my battery pack with me in order to use this.

Perfect 10/10

No way to hold it on the ipad pro 11in m4 in the middle, you can only attach it to the side which is very annoying to use, the heat from the device will make your hand extremely hot when using it like that. Should have included a thermal sticker pad like other products. Besides that, the device working probably as it should be (for now) with the shark arsenal app.

I originally had the mag cooler 4 pro and I was surprised on it but this one the 5 pro will ABSOLUTELY MAKE A POPSICLE OUT OF YOUR PHONE !!! the app they have will let you control literally anything on the 5 vs the 4 .. BUY THE 5 PRO !!!!! I left it on my phone on max cool with the safety off and I got a warning phone too cold for operation sooooo I do not need to explain don’t stick your tongue to it there Christmas story (if you get the reference) and the temperature control you can dial it in to whatever you desire ! I’ve also dropped this a few times and it’s def durable I’m sure you’ll enjoy it (JUST DOWNLOAD THE APP!!)The 5 pro is def the way to go!****MAKE SURE YOUR CHARGE BLOCK CAN OUTPUT 35+ watts IF YOU WANT MAX COOLING it will pull every ounce from your charge block it can at max cool !!! ****Seller shipped extremely fast (next day) I was so happy with them when I bought the 4 pro I came back when the 5 was available and got that one (overnight) ! Thanks !!!!

The cooler itself works well. But the app download page gives me an .apk file instead of a Google Play app? I'm not allowing that on my phone, and will have to give up the app control.