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DevilsBreathProtect

Galaxy A30

Samsung · catalog updated 2026-10-21

All supported devices
Brand
Samsung
Kind
Android phone · released 2019-03 · last update Android 11
Model codes
SM-A305F, SM-A305FN, SM-A305G, SM-A305GN, SM-A305GT, SM-A305N, SM-A305YN

Launched with Android 9 (One UI 1.1); install the Android 10 update first. Final update One UI 3.1 (Android 11). SM-A3050, SM-A3051 and SM-A3058 are the Chinese Galaxy A40s, not this phone. The Japanese Galaxy A30 (SCV43) is listed separately.

Gestures on the Galaxy A30

Double-press the side key

DocumentedInput: Side key

Requires: One UI 2.0 or later, including One UI Core (One UI 1.5 on Galaxy Note10); not on Android Go models

Set it up

  1. Settings
  2. Advanced features
  3. Side button (or Side key)
  4. Double press
  5. Apps (or Open app)
  6. Quick signal: side key

Single press always wakes or locks the screen. Natively, Long press only offers a digital assistant (Gemini by default from One UI 7), Bixby or the power-off menu, so it cannot open our app. Labels changed over time: One UI 6 and earlier say Side key and Open app (pick the app with the gear icon); One UI 7 and later say Side button and Apps. When the phone is locked, Open app asks for an unlock before the app opens (SamMobile, One UI 1.5; Samsung does not document this for later versions), so test whether our entry can show over the lock screen. Emergency SOS also listens to the side key: 5 quick presses on One UI 5.0 and later (Send SOS messages used 3 or 4 presses on older versions), so repeated double presses must be spaced out. On Galaxy Z Flip, Samsung says to keep the phone open when using side-key shortcuts. Samsung notes the options vary by model, region, carrier and software version.

Sources

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

  • Side key ×3Sends a signal

    Three side-key double presses about 2 s apart: deliberate, and the spacing keeps clear of Emergency SOS, which fires on 5 quick presses.

    Side key ×3, 1.5–4 s apart · whole gesture within 12 s

  • Side key ×2, then shake ×2Sends a signal

    Two spaced side-key double presses, then two sharp shakes; needing two different inputs makes an accidental match very unlikely.

    Side key ×2, 1.5–4 s apart → then within 5 s: Shake ×2, 0.15–1.5 s apart · whole gesture within 15 s

  • Side key, then shake ×3Sends a signal

    One side-key double press, then three sharp shakes; only two key presses, so Emergency SOS cannot trigger by mistake.

    Side key ×1 → then within 5 s: Shake ×3, 0.15–1.5 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.