Getting a SeaTouch 6 Pro from the box to a first underwater photo comes down to three stages: confirm the phone fits, prepare the phone and seal the housing, then take it into shallow, easy water for the first shot. Plan on an evening at home for the first two. The water check in step two, run with the inner support block in place of the phone, is the one people are tempted to skip, and it is the step that protects the phone.
This is the checklist version. If you would rather read how the first week actually unfolds for a new owner, including the beginner mistakes, start with from new phone to first underwater photo and come back here for the steps.
Step 1: Unbox and Confirm the Fit
What comes in the box
Every 6 Pro comes with two items that are new to the SeaTouch line: a snorkeling red filter tuned for 0 to 10 meters, and desiccant pads for the built-in pad slot. Everything else depends on which kit you bought. The 6 Pro is sold in kits from Water Sports up to Ultimate, and the accessories included in each one differ, so check what you received against the packing list for your kit. Our SeaTouch 6 Pro kit buying guide explains what each level adds. If something on your list is missing, contact the seller before you start assembling.
Keep the manual that came with your unit; where it differs from the steps below, it wins. DIVEVOLK technical support has the current compatibility information.
Check the phone against the envelope
The 6 Pro accepts phones up to 180.0 × 82.5 × 11.2 mm and no more than 17 mm thick at the camera module, up from a 15 mm maximum on the previous generation. That covers a wide range of current iPhone and Android flagships. The iPhone 18 Pro and 18 Pro Max are confirmed, and we explain the fit in Will SeaTouch 6 Pro fit iPhone 18 Pro? The foldable iPhone Duo is not supported.
Measure the phone out of its everyday case, because the envelope is sized around the phone itself. The cameras also have to sit behind the lens window, so passing on the numbers alone is not quite enough. If your phone is unusual in thickness or camera layout, ask technical support before the first dive.
Leave the screen protector on
Owners of earlier SeaTouch housings were often told to peel the screen protector off. With the sixth-generation membrane, newer phones can stay in the housing with their protector in place. If touch response through the membrane feels unreliable in the dry run below, that is the time to ask support whether your particular protector is the cause.
Dry fit
Seat the phone in the housing on a clean, padded surface with dry hands. It should go in without force, sit flat, and have nothing pressing on it unevenly. Look through the lens window and confirm the cameras you plan to use are clear of the frame. Then take the phone out again, gently, and note how removal starts so you are not prying at glass on a boat.
Step 2: Prepare the Phone, Then Seal and Check
Phone settings
The SeaTouch 6 Pro is a button-free housing. Once the phone is sealed inside, its volume keys, power button and side button cannot be pressed. Every input goes through the touchscreen via the membrane, which shapes the settings you need.
- Leave any native underwater mode off. Several phones, including OnePlus and Huawei models, have an underwater mode that disables the touchscreen and moves the shutter to the volume keys. Inside a button-free housing that leaves you with no way to operate the phone, so make sure it is off before sealing. The verified exception is Samsung's Ocean Mode, which runs inside the Expert RAW app and stays fully touch-driven.
- Extend auto-lock. Set screen lock to the longest interval your phone allows so it is not locking mid-dive.
- Charge and clear storage. Start at full battery with room for a dive's worth of video.
- Pick one camera mode. The first dive is not the time to explore settings.
If you want a tactile shutter, especially with gloves, the answer is the DIVEVOLK Bluetooth external shutter. It is rated to 60 meters, and the 6 Pro has two mounting positions so it can sit under your thumb in a left- or right-hand grip. Pair it on land, before the phone is sealed, and check it fires.
Dry run through the membrane
Seal the phone in and rehearse the first dive at home. Open the camera, tap to focus, pinch to zoom, switch between the main and ultra-wide lens, start and stop a video, then swipe up to the home screen and come back. On large phones that swipe-up gesture now works natively through the 6 Pro's reworked touch window, where the previous generation sometimes needed AssistiveTouch. Anything that lands off target on the sofa will be harder with cold hands at depth, so fix it now.
Water check with the inner support block
The 6 Pro does not use a vacuum pump, so the leak check is visual inspection plus a water test before the phone goes in. The manual is specific about how: install the inner support block that ships in the box, and never submerge the housing empty or with only the phone adapter inside. Do it when the housing is new, after any knock or long storage, and after any seal part is replaced.
- Inspect the seal line and the surface it presses against for hair, lint and sand. Run a clean fingertip around them.
- Put the inner support block inside, then close the housing following the manual.
- Hold it underwater in a sink, tub or the shallow end of a pool for a few minutes.
- Lift it out, dry the outside completely, then open it and look for any water inside.
Any water at all means the phone does not go in. Recheck the seal line and contact technical support if a second check is not completely dry. A clean check tells you the housing sealed under those conditions on that day. It does not replace the inspection you do each time you close it before a dive, which our six essential housing checks cover.
Final load
Take the inner support block out (it goes back in whenever you store the housing), then load the phone in the driest air you can find, ideally indoors and never on a wet deck. Drop a fresh desiccant pad into the built-in slot; it manages the moisture sealed in with the phone and helps keep the lens glass clear when warm air meets cold water. Close the housing, then press across the whole window to confirm touch response before you leave.
Step 3: First Water, First Photo
Pick easy water
The housing is IPX8 rated to 60 meters. Your first session should use almost none of that. A pool, a calm protected bay or the last shallow minutes of a dive you were doing anyway is ideal, inside your training and with your normal buddy check done first. Divers Alert Network advises divers to familiarize themselves thoroughly with newly purchased gear before relying on it, and that applies to a camera rig as much as a regulator. A predive safety check still comes before any camera task.
Your phone's own water rating is not part of this plan. Apple notes that water resistance is not permanent and that intentional submersion is not covered. The housing is what takes the phone underwater.
Clip on the red filter for shallow water
The snorkeling red filter clips straight onto the housing's lens window without a bracket and is tuned for 0 to 10 meters. In that range it restores the color of coral, fish and skin that shallow water turns blue and green. Beyond its 10-meter range, take it off and switch to a deeper filter or add light. For deeper shooting with a wide-angle lens, DIVEVOLK's Internal Red Filter accessory is tuned for 5 to 25 meters. It clips inside the wide-angle lens barrel rather than stacking on top, so the ultra-wide keeps its full field.
Take the shot
Get neutral first, then raise the phone. Choose a stable subject, tap to focus, take two or three frames, check one, and get back to the dive. Hold position rather than chasing. Never touch coral or animals, and never steady yourself on the reef to get a frame. If you cannot hold the shot without contact, you are too close or not neutral yet.
Glance at the inside of the lens glass now and then. A fine haze that does not move is usually moisture sealed in during loading. Droplets that grow, or any free water, mean the camera task is over. In either case, finish the dive on your training and gas plan and never rush an ascent to protect the phone. Our guide to preventing fog in an underwater phone housing explains how to tell the two apart.
After the first dive
Rinse the housing in fresh water while it is still closed, dry the outside, then open it over a towel in a dry place. Take the phone out, remove the used pad, and let the housing air dry in shade. The SeaTouch 6 Pro maintenance guide covers what to do at each stage after that, from the surface interval to storage.
One more thing to know before the first trip: at the surface, GPS and cellular signals pass through the housing body, so you can check your position or make a call without opening it. When strong current swept John and his wife away from their boat off Saba, he used the iPhone still sealed in his DIVEVOLK housing to call his son, who raised the alarm. His account is in John's Saba rescue story.
The Three Steps on One Page
- Unbox and fit. Check your kit list, confirm the phone against the 180.0 × 82.5 × 11.2 mm envelope, leave a newer phone's protector on, dry fit without force.
- Prepare and seal. Native underwater mode off, long auto-lock, charged with free storage, external shutter paired if you have one, dry run through the membrane, water check with the inner support block, final load in dry air with a fresh desiccant pad.
- First water. Easy, shallow water within your training, red filter on in the top 10 meters, neutral before shooting, no contact, rinse closed afterward.
