realme 14x 5G

realme · catalog updated 2026-10-21

Brand: realme
Kind: Android phone · released 2024-12
Model codes: RMX3940

Indian model. Launch OS realme UI 5.0 (Android 14) per Wikipedia's realme product list, which also gives the code; Google Play's device list shows RMX3940 unnamed. realme lists the 14x 5G as a Dynamic Button model. Google Play's device list also labels RMX3943 (listed under the C75 5G) as realme 14x 5G. Screen-off gesture support comes from realme's realme UI-wide guide, not a model-specific source.

Gestures on the realme 14x 5G

With the screen off, draw a custom screen-off gesture (Draw ^, Draw M, Draw W, or a slide up/down/left/right) that is set to open an app

DocumentedInput: Screen-off gesture

Requires: Full realme UI build (realme UI 1.0 to 7.0). realme says realme UI R, Go, S and T Edition do not support it; U Edition and builds labelled only "realme UI" are not confirmed.

Set it up

Settings
Accessibility & convenience
Gestures & motions
Screen-off gestures
Add gesture
Draw M
Open an app
Quick signal: gesture

Path shown is realme UI 6.0/7.0. realme UI 3.0-5.0: Settings > System settings (or Additional settings) > Gestures & motions > Screen-off gestures > Add gesture. realme UI 1.0/2.0: Settings > Convenience tools > Gestures & motions > Screen-off gestures > Add gesture. realme's guide lists the addable gestures as Draw ^, Slide up, Slide down, Slide left, Slide right, Draw M and Draw W; after choosing one you pick its function. realme's English guides do not name the functions; the screenshot in realme's China guide shows Unlock, Call someone and Launch an app, so the exact English label of the app option is unconfirmed. Draw O (camera) and Draw V (flashlight) are fixed functions and cannot open another app. Added gestures appear under More screen-off gestures, where they can be changed or deleted. Works only while the screen is off. realme says its phones have no lock-screen mistouch prevention and suggests turning screen-off gestures off when pocket mis-touches happen, so use a gesture together with a second input. Whether the app opens over the lock screen or only after unlocking is not documented.

Sources

Double-press the power button

DocumentedInput: Side key

Requires: Only models realme lists for Dynamic Button (2024 and later budget and mid-range models)

Set it up

Settings
Special features
Dynamic Button
Double-press Power button
Open an app
Quick signal: side key

Turn on the Dynamic Button switch and the switch next to Double-press Power button. Open an app replaces the other double-press choices (sound mode, camera, timer, Snap Cards, Do Not Disturb, Riding mode, Airplane mode, flashlight, Clean up). Press and hold stays on Power menu or Voice Assistant. realme's supported list: realme 12x 5G, 12 5G, C61, C63, NARZO N61, C63 5G, 13+ 5G, 13 5G, NARZO 70 Turbo 5G, P1 Speed 5G, NARZO 70x, C65 5G, 14x 5G, P3x 5G, NARZO 80x 5G, C75 5G, C73 5G, NARZO 80 Lite 5G, C71 4G, P3 Lite 5G, 15 Lite 5G, P4 Lite 4G, Note 80. realme does not say which software version adds it. Pressing the power button 5 times in quick succession opens the emergency call screen (and calls automatically when Emergency SOS is on), so keep recipes below 5 presses. Behaviour with the screen off or locked is not documented.

Sources

Double-tap the power button (touch it twice without pressing)

DocumentedInput: Side key

Requires: Only models realme lists for Dynamic Button (2024 and later budget and mid-range models)

Set it up

Settings
Special features
Dynamic Button
Double-tap Power button
Open an app
Quick signal: side key

Turn on the Dynamic Button switch and the switch next to Double-tap Power button. Same supported models and choices as the double press (minus Snap Cards). A light touch on the power button is enough, so gripping the phone or pocket contact can trigger it more easily than a double press; prefer the double press for recipes. If both are mapped to our entry, both arrive as side_key events. Behaviour with the screen off or locked is not documented.

Sources

https://www.realme.com/in/support/kw/doc/2242520

Plus what the app offers on every Android phone: In-app button, Widget, Quick Settings tile, Shake, Volume keys, Voice phrase. How to set those up

Recommended presets

Shake ×3Sends a signal
Three sharp shakes within 2.5 s: hard to do by accident, easy to do without looking.
Shake ×3, 0.15–1 s apart · whole gesture within 2.5 s
Widget ×2Sends a signal
Two taps on the home-screen widget within 3 s; a single accidental tap does nothing.
Widget ×2, 0.1–3 s apart · whole gesture within 3 s
Screen-off gesture, then shake ×2Sends a signal
One drawn letter on the dark screen confirmed by two sharp shakes; a pocket mis-touch alone cannot fire it.
Screen-off gesture ×1 → then within 8 s: Shake ×2, 0.3–1.5 s apart · whole gesture within 12 s
Screen-off gesture ×2Sends a signal
Draw the letter, lock the phone with the power button, draw it again; needing a manual lock in between makes accidental repeats unlikely.
Screen-off gesture ×2, 1.5–15 s apart · whole gesture within 20 s
Power button double press ×2Sends a signal
Two separate double presses (four presses in all) with a short pause; stays below the five rapid presses that open the emergency call screen.
Side key ×2, 0.8–4 s apart · whole gesture within 6 s
Power button double press, then shake ×2Sends a signal
One double press confirmed by two sharp shakes; the camera-style habit of double-pressing alone cannot fire it.
Side key ×1 → then within 8 s: Shake ×2, 0.3–1.5 s apart · whole gesture within 12 s

Gestures are set up in the phone settings as shown, then combined into a trigger recipe in the app, where practice mode shows step by step whether a gesture would trigger.