diff --git a/libutils/String16_test.cpp b/libutils/String16_test.cpp
index ea4e0491c..c6e6f746a 100644
--- a/libutils/String16_test.cpp
+++ b/libutils/String16_test.cpp
@@ -58,6 +58,14 @@ TEST(String16Test, Copy) {
     EXPECT_STR16EQ(u"Verify me", another);
 }
 
+TEST(String16Test, CopyAssign) {
+    String16 tmp("Verify me");
+    String16 another;
+    another = tmp;
+    EXPECT_STR16EQ(u"Verify me", tmp);
+    EXPECT_STR16EQ(u"Verify me", another);
+}
+
 TEST(String16Test, Move) {
     String16 tmp("Verify me");
     String16 another(std::move(tmp));
@@ -130,10 +138,6 @@ TEST(String16Test, StaticStringMove) {
     String16 another(std::move(tmp));
     EXPECT_STR16EQ(u"Verify me", another);
     EXPECT_TRUE(another.isStaticString());
-    // move/copy from StaticString16 is specialized (just copy the handle).
-    // no extra actions required.
-    EXPECT_STR16EQ(u"Verify me", tmp);
-    EXPECT_TRUE(tmp.isStaticString());
 }
 
 TEST(String16Test, StaticStringSize) {
@@ -185,16 +189,22 @@ TEST(String16Test, StringSetToStaticString) {
     EXPECT_STR16EQ(u"Verify me", another);
 }
 
+TEST(String16Test, StringCopyAssignFromStaticString) {
+    StaticString16 tmp(u"Verify me");
+    String16 another(u"nonstatic");
+    another = tmp;
+    EXPECT_STR16EQ(u"Verify me", another);
+    EXPECT_TRUE(another.isStaticString());
+    EXPECT_STR16EQ(u"Verify me", tmp);
+    EXPECT_TRUE(tmp.isStaticString());
+}
+
 TEST(String16Test, StringMoveAssignFromStaticString) {
     StaticString16 tmp(u"Verify me");
     String16 another(u"nonstatic");
     another = std::move(tmp);
     EXPECT_STR16EQ(u"Verify me", another);
     EXPECT_TRUE(another.isStaticString());
-    // move/copy from StaticString16 is specialized (just copy handle).
-    // no extra actions required.
-    EXPECT_STR16EQ(u"Verify me", tmp);
-    EXPECT_TRUE(tmp.isStaticString());
 }
 
 TEST(String16Test, EmptyStringIsStatic) {
diff --git a/libutils/include/utils/String16.h b/libutils/include/utils/String16.h
index 53f11fd72..3ef56a3cf 100644
--- a/libutils/include/utils/String16.h
+++ b/libutils/include/utils/String16.h
@@ -174,16 +174,6 @@ protected:
 
     template <size_t N>
     explicit constexpr String16(const StaticData<N>& s) : mString(s.data) {}
-
-public:
-    template <size_t N>
-    explicit constexpr String16(const StaticString16<N>& s) : mString(s.mString) {}
-    template <size_t N>
-    constexpr String16& operator=(const StaticString16<N>& s) {
-        release();
-        mString = s.mString;
-        return *this;
-    }
 };
 
 // String16 can be trivially moved using memcpy() because moving does not