KryoZon S9 für Mobile Legends: Griff und Komfort zwischen Ranglistenspielen prüfen

Check whether the S9’s fanless, water-cooled head leaves your thumbs clear on your phone. During an MLBB segment, MLAU said his phone felt noticeably cooler with the S9 and longer gaming felt more comfortable. That is his hands-on impression, not a measured temperature drop or a guarantee for every ranked-play grip. Try the mount with your own controls, then set the phone down between matches.

MLAU’s S9 impression makes a two-thumb grip check worthwhile

MLAU said his phone normally became warm after a few MLBB matches. In the shown S9 gameplay segment, he described the phone as noticeably cooler and longer gaming as more comfortable. His video shows the game and his reaction; it does not identify the phone model or measure temperature, frame rate or ranked-session duration. Take the comfort comment as a reason to investigate your setup, rather than a promise about how the attachment will feel in your hands.

The KryoZon S9 Water Cooling Phone Cooler - Fanless Liquid Cooling offers magnetic and clip attachment. MLAU also showed both mounting options in his hardware demonstration. Neither option tells you where your fingers will land: choose the one you can fit securely to your phone, then make the control check before entering another match. The listed 75g weight applies to the cooling end only, not the pump, water container, tubing and power source together (S9 product specifications).

Open your usual MLBB controls and hold the phone in your ordinary two-thumb position. Reach the buttons you use most often while keeping the cooling head and, if fitted, the clip in place. Notice whether either thumb changes its path to avoid an edge, or whether a supporting finger has to move. If so, adjust the mount position and try the same actions again. Make this a stationary control check first; there is no need to discover an awkward reach during a live ranked fight.

Mobile Legends’ official Custom UI patch note says the game added custom layouts for medium and large buttons. If you already use one of those layouts, test that layout—not a default screen that happens to leave more space. You can also inspect a different button placement if it suits your play style. The patch note documents layout options; only your own trial can establish whether your chosen buttons and S9 position leave your thumbs comfortable.

The S9 installation starts with pump space, not a match queue

Water circulation and a semiconductor TEC are the S9’s listed cooling system, while the cooling head itself is fanless. The S9 specifications list Type-C, 30W, a 12V / 2.5A rating, and High, Low and AI modes. These are product specifications, not an independently measured power draw or a Mobile Legends performance result. The manufacturer rates the pump below 30dB; the product listing does not provide a complete-system noise figure.

Set up the pump before attaching the head. The printed S9 operating instructions call for the pump to be completely submerged in a large-capacity container of room-temperature water and prohibit running it dry. They then direct you to fix the cooling head to the phone and press the inline controller to start. The instructions specify 12V operation and recommend a compatible 12V / 3A power source; the S9’s listed 12V / 2.5A rating is in its product specifications.

Give the container a stable place beside your gaming spot before you pick up the phone. Keep the controller and power connection where you can reach them without pulling on the line. The product includes a cooler, cable, clip and manual, and its listed fit is for phones up to 92mm wide (S9 product specifications). Width is a useful first check, but it does not replace the hands-on mounting check with your particular phone and case.

Once the pump and head are positioned, check how the connected setup moves with your hands.

S9 tubing and between-match placement need a dry run

The S9’s listed tube length is 1.2m (S9 product specifications). That figure helps you plan where the water container might go; it does not tell you how much slack remains after routing the line around your desk, chair or hands. Check the actual path with the phone in the position you use for ranked games and the pump in the water container you intend to use.

Hold the phone naturally, then make the small movements you make when adjusting your grip. Watch the tubing near the cooling head and at the edge of your play space. It should have room to follow those movements without becoming taut, dragging across a thumb or tugging the phone toward the container. If the route feels restrictive, move the container or change the line’s path and repeat the movement check. Avoid treating the full 1.2m as available hand movement: part of that length is used simply reaching from the pump to the phone.

Next, rehearse the pause between matches. Put the phone in the exact place you normally leave it—not an imagined clear patch of desk. Check whether the attached head or clip changes how it rests, and whether the tubing pulls as your hands let go. If you usually place the phone on a stand, test that resting position with the attachment installed. The S9 also has a listed 1/4-inch brass mount thread for many streaming stands or tripods (S9 product specifications), but a stand is only useful here if it works with your actual phone, line route and between-match routine.

Lift the phone from its resting position and check whether the tube route remains comfortable as you return to your playing grip. When you are finished using the cooler, the printed operating instructions say to long-press the controller for 2 seconds to switch it off.

Your own grip notes settle the ranked-play decision

MLAU’s favorable MLBB impression answers one narrow question: he said the phone felt cooler and longer play felt more comfortable in his session (MLAU’s gameplay segment). It cannot decide whether your thumb placement, phone, nearby water container and between-match resting spot make the S9 pleasant for you. A short trial with your real layout gives you a more relevant answer than a claimed universal fit.

Record the outcome as a decision, not just a list of motions. If the mount leaves your frequent controls easy to reach, the tubing stays loose through your normal grip changes, and the phone rests comfortably between games, you have a workable arrangement to try during play. If one of those fails, note precisely what needs to move: the head, the clip, the container or the resting spot. If you cannot find a position that satisfies all three, do not force an awkward grip for the sake of keeping the cooler attached.

The S9’s real-time temperature display and overheat alert with auto shutoff are listed features, not a substitute for checking physical fit with your grip.

Frequently Asked Questions

Will the S9 clip get in the way of Mobile Legends controls?

It depends on where you place it and how you hold your phone. The S9 supports clip and magnetic attachment; try your usual two-thumb control reach with the chosen mount fitted before playing ranked.

Can I change my MLBB buttons to make room for the cooler?

Mobile Legends documents medium and large Custom UI button layouts. Inspect the layout you actually use and adjust it only if the new position still suits your play; the game’s layout option does not itself establish cooler clearance.

Where should I put my phone between ranked matches?

Try your usual resting place with the head attached and the pump positioned for use. Set the phone down and pick it up once to check for a stable resting position and an unstrained tube route; the S9’s listed tubing is 1.2m long, but your route determines the slack you have.

Does MLAU’s test show an FPS improvement in Mobile Legends?

No FPS comparison appears in MLAU’s S9 MLBB segment. His reported result was that the phone felt noticeably cooler and longer gaming felt more comfortable to him.

Written by Wayne Wei

Co-founder of KryoZon. With a background in semiconductor cooling and consumer electronics, Wayne Wei tests every product in real-world scenarios — from marathon gaming sessions to 4K video renders — so you get cooling advice grounded in data, not marketing.