diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
index 008ab485..3ceb1dcd 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
@@ -152,6 +152,7 @@ class ThreadActivity : SimpleActivity() {
             setupAdapter()
             runOnUiThread {
                 setupThreadTitle()
+                setupSIMSelector()
             }
         }
     }
@@ -371,6 +372,10 @@ class ThreadActivity : SimpleActivity() {
                 }
             }
 
+            if (numbers.isEmpty()) {
+                return
+            }
+
             currentSIMCardIndex = availableSIMs.indexOfFirstOrNull { it.subscriptionId == config.getUseSIMIdAtNumber(numbers.first()) } ?: 0
 
             thread_select_sim_icon.applyColorFilter(config.textColor)