From de92bfc3e8ba4bdba9b8758bb1acdb8cdfbadd79 Mon Sep 17 00:00:00 2001
From: RustDesk <71636191+rustdesk@users.noreply.github.com>
Date: Sat, 23 Aug 2025 22:32:09 +0800
Subject: [PATCH] Updated FAQ (markdown)

---
 FAQ.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/FAQ.md b/FAQ.md
index f5c352a..373d133 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -443,6 +443,14 @@ The controlled side works fine with UDP `21116` port, but it can not connect to
 
 ![image](https://github.com/user-attachments/assets/db2be786-89e3-4a2a-9702-d511fa453feb)
 
+- Case 3
+
+> A: I'm having this error when one of my employees tries to connect to a Samsung s20 (pic attached). All devices work fine for me, including the s20 He can connect to the google pixels fine, just no the s20 I have also had this issue as well, but it just goes away. He has always had the issue.
+> 
+> B: A possible reason is that UDP is blocked on your devices. Could you try out this advanced option, https://rustdesk.com/docs/en/self-host/client-configuration/advanced-settings/#disable-udp ? with this option on custom client, it will not use UDP any more (only use TCP)
+>
+> A: Thank you this worked! Much appreciated.
+
 # Deploy RustDesk server in intranet.
 
 First you should set relay server with public ip (you need to fix NAT hairping problem to use public ip in intranet first) explicitly on "settings" -> "relay" of web console. Or you can set relay server (public ip) explcitly on controlled side (remote side, the device you want to control).