diff --git a/kcsbridged.cpp b/kcsbridged.cpp
index a37cf5f..2110f3e 100644
--- a/kcsbridged.cpp
+++ b/kcsbridged.cpp
@@ -78,7 +78,7 @@
 class SmsChannel
 {
   public:
-    static constexpr size_t kcsMessageSize = 256;
+    static constexpr size_t kcsMessageSize = 4096;
     static constexpr uint8_t netFnShift = 2;
     static constexpr uint8_t lunMask = (1 << netFnShift) - 1;