diff --git a/docs/installation/clients/sfa.md b/docs/installation/clients/sfa.md
new file mode 100644
index 00000000..5d274846
--- /dev/null
+++ b/docs/installation/clients/sfa.md
@@ -0,0 +1,16 @@
+# SFA
+
+Experimental Android client for sing-box.
+
+#### Requirements
+
+* Android 5.0+
+
+#### Download
+
+* [AppCenter](https://install.appcenter.ms/users/nekohasekai/apps/sfa/distribution_groups/publictest)
+
+#### Note
+
+* Working directory is at `/sdcard/Android/data/io.nekohasekai.sfa/files` (External files directory)
+* User Agent is `SFA/$version ($version_code; sing-box $sing_box_version)` in the remote profile request
diff --git a/docs/installation/clients/sfa.zh.md b/docs/installation/clients/sfa.zh.md
new file mode 100644
index 00000000..41dcf8d9
--- /dev/null
+++ b/docs/installation/clients/sfa.zh.md
@@ -0,0 +1,16 @@
+# SFA
+
+实验性的 Android sing-box 客户端。
+
+#### 要求
+
+* Android 5.0+
+
+#### 下载
+
+* [AppCenter](https://install.appcenter.ms/users/nekohasekai/apps/sfa/distribution_groups/publictest)
+
+#### 注意事项
+
+* 工作目录位于 `/sdcard/Android/data/io.nekohasekai.sfa/files` (外部文件目录)
+* 远程配置文件请求中的 User Agent 为 `SFA/$version ($version_code; sing-box $sing_box_version)`
diff --git a/docs/installation/clients/sfi/index.md b/docs/installation/clients/sfi.md
similarity index 59%
rename from docs/installation/clients/sfi/index.md
rename to docs/installation/clients/sfi.md
index e8708c8a..ada1efe7 100644
--- a/docs/installation/clients/sfi/index.md
+++ b/docs/installation/clients/sfi.md
@@ -1,6 +1,6 @@
 # SFI
 
-Experimental official iOS client for sing-box.
+Experimental iOS client for sing-box.
 
 #### Requirements
 
@@ -11,9 +11,10 @@ Experimental official iOS client for sing-box.
 
 * [TestFlight](https://testflight.apple.com/join/c6ylui2j)
 
-#### Limit
+#### Note
 
-* `system` tun stack not working
+* `system` tun stack not working on iOS
+* User Agent is `SFI/$version ($version_code; sing-box $sing_box_version)` in the remote profile request
 
 #### Privacy policy
 
diff --git a/docs/installation/clients/sfi/index.zh.md b/docs/installation/clients/sfi.zh.md
similarity index 55%
rename from docs/installation/clients/sfi/index.zh.md
rename to docs/installation/clients/sfi.zh.md
index 0d164e9a..61487263 100644
--- a/docs/installation/clients/sfi/index.zh.md
+++ b/docs/installation/clients/sfi.zh.md
@@ -1,6 +1,6 @@
 # SFI
 
-实验性的官方 iOS sing-box 客户端。
+实验性的 iOS sing-box 客户端。
 
 #### 要求
 
@@ -11,9 +11,10 @@
 
 * [TestFlight](https://testflight.apple.com/join/c6ylui2j)
 
-#### 限制
+#### 注意事项
 
-* `system` tun stack 不工作
+* `system` tun stack 在 iOS 不工作
+* 远程配置文件请求中的 User Agent 为 `SFI/$version ($version_code; sing-box $sing_box_version)`
 
 #### 隐私政策
 
diff --git a/mkdocs.yml b/mkdocs.yml
index 66b2f0df..c458c47b 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -38,8 +38,8 @@ nav:
   - Installation:
       - From source: installation/from-source.md
       - Clients:
-          - SFI:
-            - installation/clients/sfi/index.md
+          - iOS: installation/clients/sfi.md
+          - Android: installation/clients/sfa.md
   - Configuration:
       - configuration/index.md
       - Log: