# Geekvape Aegis Solo 3 manual: full walkthrough > Geekvape Aegis Solo 3 manual: powering on, the six vaping modes, filling the Z Sub-Ohm, coils, touch locking and the error messages explained. The leaflet in the box folds out once and consists largely of pictograms. The result is predictable: the mod stays stuck in Smart mode, the screen goes dark for no visible reason and the puff counter never returns to zero. This **Geekvape Aegis Solo 3 manual** takes the operations one at a time, in the order you actually need them, and explains what the paper version leaves to guesswork. ## The Geekvape Aegis Solo 3 manual in five commands Five commands cover ninety per cent of daily use on the S100. Five quick presses on the fire button switch the device on or off. Three quick presses open the settings menu, where plus and minus scroll through the entries. A long press on fire confirms a selection, and the choice also confirms itself after five seconds of inactivity. Finally, holding fire, plus and minus together for two seconds switches the screen into stealth mode. The rest comes down to the touch lock, which engages on its own as soon as the mod is picked up or set down. That single feature is why so many owners believe the device is switching itself off when it is only locking. ## Two versions, two power sources The Aegis Solo 3 exists in two variants that share the same electronics but not the same energy source. Working out which one you have, before touching anything, saves hunting for a battery door that does not exist. On the removable cell version the door sits under the mod and opens with a screw cap fitted with a half moon tab that lifts by hand. Two turns are enough to free it, and a coin helps if the thread is still new. The cell goes in following the polarity marked inside the cradle. A vent hole is drilled under the tab, which means that area must never be covered with tape or any kind of protective wrap. On the built in battery version there is no door at all, the cell is fixed. The USB-C port hides under a rubber flap at the top of the mod, which has to be lifted to plug the cable in. That flap is part of the water resistance the manufacturer claims at IP68 level. Closing it carefully after each charge is a genuine part of routine upkeep rather than a cosmetic detail. ## Charging and cell safety On both versions charging runs through the USB-C port, connected to a computer or a mains adaptor, with the remaining level shown on screen throughout. On the removable cell version a dedicated external charger remains preferable to the onboard port. It puts less strain on the chipset and lets you rotate two cells, which offsets the main limitation of the 18650 format. Cell safety here is a method, not a number. Read the datasheet published by the cell manufacturer, note the continuous discharge current it states, and compare it with what the mod draws in the mode and coil configuration you have chosen. Cells used together must be married, of the same reference and age, and any cell with a torn wrap or a marked terminal gets replaced rather than nursed along. They travel in a rigid case and charge on a charger built for that format. ## The menu and the six vaping modes The electronics on the Solo 3 are complete to the point of being disorienting on first use. Six modes share the same menu, and that initial choice shapes the behaviour of the mod far more than any fine adjustment of the output. Three quick presses on fire, with the mod on, open the settings. Plus and minus scroll the entries, a long press on fire confirms, and five seconds without input confirms as well. The same menu holds the puff counter reset and the resistance value reset used after an atomiser change. Those two lines account for most of the questions asked about this device. Power mode, also written VW, lets you set the wattage and remains the reference choice. Memory keeps the settings of five different atomisers, which is useful when alternating between two tanks. TCR opens a heating curve across five segments. Smart sets the output automatically from the detected coil, Eco applies the lowest acceptable figure and Boosting the highest. For a first session, power mode set inside the range printed on the coil is the readable option. ## The Z Sub-Ohm tank: filling and coils The kit ships with the manufacturer top airflow tank, sold in the United Kingdom in its 2 ml version to match the domestic cap on tank capacity. It is built for direct lung inhalation, which points the liquid choice towards high vegetable glycerine ratios. The top cap unscrews a little over a quarter turn, then lifts away. Two wide ports appear underneath, compatible with every bottle nozzle including the wider necks used on larger formats. The cap goes back by pushing down and screwing home. A firm but unforced tightening avoids leaks from the top, which are the most frequent cause of condensation in the airflow chimney. To change the coil, unscrew the tank from the mod and turn it over. Unscrew the base, pull the spent coil out of the tank side, and click the new one into its place. A few drops of liquid placed directly on the cotton prime it. The manufacturer asks for at least ten minutes between filling and the first draw, and that wait governs the whole working life of the part. The two airflow inlets sit at the top of the tank, opposite each other, and the ring turns to open or close the passage. Wider open gives an airier draw and cooler vapour, closing down tightens the draw and warms it. ## Touch lock, stealth mode and display Under the moulded leather panel sits a set of pressure sensitive contacts. The mod unlocks the moment you take hold of it and relocks when you let go, which removes accidental firing in a pocket. Stealth mode, obtained with a two second press on fire, plus and minus together, turns the screen off during use. It saves a noticeable amount of runtime on the single cell version. The display theme changes in the settings, by holding plus and minus together for a second, each repeat cycling through a theme. Brightness is set with the mod asleep, with a one second press on fire and plus to raise it, fire and minus to lower it. ## Error messages and factory reset The chipset cuts the circuit automatically beyond ten seconds of continuous pressure on fire, as a safety measure. An atomiser not detected message usually means a dirty 510 pin or a coil not fully seated in its base. To start again from scratch, enter the version information screen, then hold fire, plus and minus for two seconds before confirming the reset. That returns the factory settings and clears most of the erratic behaviour reported after a spell in TCR mode. The puff counter is reset from the settings menu, by moving the cursor to the matching line and pressing plus or minus. ## The choice the Geekvape Aegis Solo 3 manual skips Here is the point the paper leaflet passes over in silence. The kit ships with two Kanthal Z coils, one at 0.2 ohm and one at 0.4 ohm, each carrying its own wattage range printed on the body. On the removable cell version the lower resistance coil empties an 18650 in a few hours of steady use, and reviewers regularly note that gap between the headline output and the real runtime of a single cell. Starting on the 0.4 ohm coil, inside the lower part of its printed range, gives comparable flavour for far better endurance. The same logic runs across the rest of the range, as our [Aegis mods manual](/uk/geek-vape-aegis-user-manual/) sets out. ## Frequently asked questions ### What atomiser diameter does the top plate take? The plate takes a 23 mm atomiser without overhang and tolerates up to 25 mm with a very slight lip. The 510 connector is spring loaded, which absorbs differences in pin length. ### Can the firmware be updated? Yes, over the USB port with the mod connected to a computer. The update software is published by the manufacturer and runs on Windows. ### How big and how heavy is the mod? It measures 86.9 by 39.2 by 28.2 mm and weighs 122 g without a cell. That is compact for the stated output, though noticeably heavier than a pod because of the protective frame. ### What if the screen shows an inconsistent resistance value? Reset the value from the menu, having first checked the coil is fully seated and the 510 pin clean. A frozen value usually comes from a resistance lock switched on by mistake. ### Does the tank suit nicotine salt liquid? The Z Sub-Ohm is built for direct lung use at higher output, a register where high strength liquid is out of place. Salts belong on far more resistive coils at low power. ## Aegis Solo 3: the settings worth keeping A useful **Geekvape Aegis Solo 3 manual** comes down to three markers: five presses to power on, three to open the menu, and the higher resistance coil to start with so that runtime survives the first day. Everything else, the TCR curve, the display themes and stealth mode, can wait until the basics are automatic. The touch lock in particular deserves a minute of attention, since it explains most of the faults reported on this model that turn out not to be faults at all. One British detail closes any **Geekvape Aegis Solo 3 manual** written for this market. The tank is a 2 ml unit here, bottles come in 10 ml and strength stops at 20 mg/ml, so international capacity figures quoted online will not match what is in the box. The brand wide conventions sit in our [Geekvape manual guide](/uk/geekvape-manual/), and the rest of the hardware coverage in the [market section](/uk/category/market/). Editorial content for adult readers only. Vaping products usually contain nicotine, a substance that causes addiction. Not for sale to under-18s in the United Kingdom. This article is informational, is not a buying recommendation and does not replace the manufacturer manual.