diff --git a/pjmedia/src/pjmedia/symbian_sound.cpp b/pjmedia/src/pjmedia/symbian_sound.cpp
index 8c09be2..1759e99 100644
--- a/pjmedia/src/pjmedia/symbian_sound.cpp
+++ b/pjmedia/src/pjmedia/symbian_sound.cpp
@@ -850,8 +850,10 @@
     pi->channel_count = strm->channel_count;
     pi->samples_per_frame = strm->samples_per_frame;
     pi->bits_per_sample = BYTES_PER_SAMPLE * 8;
-    pi->rec_latency = 0;
-    pi->play_latency = 0;
+    // Symbian uses 4096 bytes buffer (~2048 samples/256 ms) for PCM rec & play.
+    // The latencies below are rounded up to be a multiplication of 80.
+    pi->rec_latency  = 2080;
+    pi->play_latency = 2080;
 
     return PJ_SUCCESS;
 }
diff --git a/pjmedia/src/pjmedia/symbian_sound_aps.cpp b/pjmedia/src/pjmedia/symbian_sound_aps.cpp
index 9b54c3d..4f8f1d0 100644
--- a/pjmedia/src/pjmedia/symbian_sound_aps.cpp
+++ b/pjmedia/src/pjmedia/symbian_sound_aps.cpp
@@ -728,8 +728,9 @@
     pi->channel_count = strm->channel_count;
     pi->samples_per_frame = strm->samples_per_frame;
     pi->bits_per_sample = BYTES_PER_SAMPLE * 8;
-    pi->rec_latency = 0;
-    pi->play_latency = 0;
+    // latencies approximation (in samples)
+    pi->rec_latency  = strm->samples_per_frame * 2;
+    pi->play_latency = strm->samples_per_frame * 2;
 
     return PJ_SUCCESS;
 }