WiFi hotspot with hidden SSID on LineageOS
4 July 2019
If you want to hide the SSID of your AP, one way to do that is to patch frameworks/opt/net/wifi/service/java/com/android/server/wifi/SoftApManager.java
file in LineageOS sources:
diff --git a/service/java/com/android/server/wifi/SoftApManager.java b/service/java/com/android/server/wifi/SoftApManager.java
index d4a1ea508..8083481a1 100644
--- a/service/java/com/android/server/wifi/SoftApManager.java
+++ b/service/java/com/android/server/wifi/SoftApManager.java
@@ -138,6 +138,9 @@ public class SoftApManager implements ActiveModeManager {
// Make a copy of configuration for updating AP band and channel.
WifiConfiguration localConfig = new WifiConfiguration(config);
+
+ // Hide SSID
+ localConfig.hiddenSSID = true;
int result = ApConfigUtil.updateApChannelConfig(
mWifiNative, mCountryCode,
Then rebuild LineageOS for your device and flash update from recovery.
Update from 2021: LineageOS 18.1
Same file, slightly different change.
diff --git a/service/java/com/android/server/wifi/SoftApManager.java b/service/java/com/android/server/wifi/SoftApManager.java
index b321a78a1..03323c99c 100644
--- a/service/java/com/android/server/wifi/SoftApManager.java
+++ b/service/java/com/android/server/wifi/SoftApManager.java
@@ -406,6 +406,9 @@ public class SoftApManager implements ActiveModeManager {
// Make a copy of configuration for updating AP band and channel.
SoftApConfiguration.Builder localConfigBuilder = new SoftApConfiguration.Builder(config);
+ // Do not broadcast SSID
+ localConfigBuilder.setHiddenSsid(true);
+
boolean acsEnabled = mCurrentSoftApCapability.areFeaturesSupported(
SoftApCapability.SOFTAP_FEATURE_ACS_OFFLOAD);
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