diff --git a/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt b/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt
index 72d4b5f..e78538b 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt
@@ -1096,15 +1096,19 @@ fun PlacementGuideView(appState: AppState) {
                             if (lastLedMode != 6) { bleManager.sendLedMode(6); lastLedMode = 6 }
                             bleManager.debugLogger.info("PLACEMENT_GREEN cv=${"%.3f".format(guideResult.cv)} lr_dev=${"%.3f".format(guideResult.lrDev)} score=${guideResult.score} otsu=${"%.0f".format(analyzer.lastOtsuThreshold)}")
                         } else if (isLocked && !greenHeld) {
-                            // hold 지남 + 실패 → 3회 연속 실패해야 이탈
+                            // hold 지남 + 실패 → N 회 연속 실패해야 이탈.
+                            // 2026-07-07 fix: 3-strike → 10-strike 완화. 사용자가 GREEN 진입 후
+                            //   버튼을 누르지 않고 그대로 기다릴 때, 미세한 자세 흔들림 (1~2초)
+                            //   만으로 3회 실패 → "0/3 정렬시작" 완전 리셋되어 처음부터 재시작하는
+                            //   불쾌한 UX 발생. 10회 (약 5초+) 는 되어야 진짜 이탈로 간주.
                             greenFailCount++
-                            if (greenFailCount < 3) {
+                            if (greenFailCount < 10) {
                                 // 아직 이탈 안 함 — GREEN 유지
                                 directionHint = context.getString(R.string.placement_in_position)
                                 directionIcon = "checkmark.circle"
                                 placementPhase = PlacementPhase.GREEN
                             } else {
-                                // 3회 연속 실패 → 진짜 이탈
+                                // 10회 연속 실패 → 진짜 이탈
                                 isLocked = false
                                 greenLockedAtMs = 0L
                                 greenFailCount = 0
@@ -1120,7 +1124,7 @@ fun PlacementGuideView(appState: AppState) {
                                 maxCenterSeen = 0; stableAtMax = 0; boundaryHit = false
                                 sweepLastDetected = 0; sweepEverSawAll = false
                                 rTracker.reset()
-                                bleManager.debugLogger.info("PLACEMENT_GREEN_EXIT after 3 consecutive fails")
+                                bleManager.debugLogger.info("PLACEMENT_GREEN_EXIT after 10 consecutive fails")
                             }
                         } else if (!greenHeld) {
                             // GREEN 아닌 상태 + hold 아닌 상태에서 실패
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index f4f24e1..e17e62d 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -320,7 +320,7 @@
     <string name="placement_complete_alignment">정렬 완료</string>
     <string name="placement_start_scanning">측정 시작</string>
     <string name="placement_skip">건너뛰기</string>
-    <string name="placement_in_position">제 위치입니다!</string>
+    <string name="placement_in_position">최적의 위치입니다!</string>
     <string name="placement_position_lost">위치를 놓쳤습니다. 치골 위에서 다시 시작해주세요.</string>
     <string name="placement_detached_restart">센서가 분리되었습니다. 치골 위에서 다시 시작해주세요.</string>
     <string name="placement_signal_lost">신호를 놓쳤습니다 — 위로 올려주세요 ↑</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b73fb40..c676676 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -320,7 +320,7 @@
     <string name="placement_complete_alignment">Complete Alignment</string>
     <string name="placement_start_scanning">Start Scanning</string>
     <string name="placement_skip">Skip</string>
-    <string name="placement_in_position">In position!</string>
+    <string name="placement_in_position">Optimal position!</string>
     <string name="placement_position_lost">Position lost. Restart above pubic bone.</string>
     <string name="placement_detached_restart">Sensor detached. Restart above pubic bone.</string>
     <string name="placement_signal_lost">Signal lost — slide up ↑</string>