diff --git a/res/layout/dialog_mobile_network_rename.xml b/res/layout/dialog_mobile_network_rename.xml
index 87f34bc1828..7a409f7cfd0 100644
--- a/res/layout/dialog_mobile_network_rename.xml
+++ b/res/layout/dialog_mobile_network_rename.xml
@@ -46,7 +46,7 @@
                 android:layout_height="wrap_content"
                 android:inputType="text"
                 android:paddingTop="@dimen/sim_label_padding"
-                android:maxLength="50"
+                android:maxLength="@integer/sim_label_max_length"
                 android:singleLine="true"/>
 
             <TextView
diff --git a/res/values/integers.xml b/res/values/integers.xml
index 5631e401ba1..9610b323be9 100644
--- a/res/values/integers.xml
+++ b/res/values/integers.xml
@@ -42,4 +42,6 @@
     <integer name="pointer_scale_seek_bar_end">3</integer>
 
     <integer name="max_integer">2147483647</integer>
+
+    <integer name="sim_label_max_length">50</integer>
 </resources>
diff --git a/src/com/android/settings/network/telephony/RenameMobileNetworkDialogFragment.java b/src/com/android/settings/network/telephony/RenameMobileNetworkDialogFragment.java
index ebc5575146e..73f80f688c7 100644
--- a/src/com/android/settings/network/telephony/RenameMobileNetworkDialogFragment.java
+++ b/src/com/android/settings/network/telephony/RenameMobileNetworkDialogFragment.java
@@ -165,9 +165,9 @@ public class RenameMobileNetworkDialogFragment extends InstrumentedDialogFragmen
         }
         final CharSequence displayName = SubscriptionUtil.getUniqueSubscriptionDisplayName(
                 info, getContext());
-        mNameView.setText(displayName);
         if (!TextUtils.isEmpty(displayName)) {
-            mNameView.setSelection(displayName.length());
+            mNameView.setSelection(Math.min(displayName.length(),
+                    getResources().getInteger(R.integer.sim_label_max_length)));
         }
 
         mColorSpinner = view.findViewById(R.id.color_spinner);
@@ -176,7 +176,7 @@ public class RenameMobileNetworkDialogFragment extends InstrumentedDialogFragmen
         mColorSpinner.setAdapter(adapter);
         mColorSpinner.setSelection(getSimColorIndex(info.getIconTint()));
 
-        if(Flags.isDualSimOnboardingEnabled()){
+        if (Flags.isDualSimOnboardingEnabled()) {
             return;
         }
 
@@ -293,10 +293,10 @@ public class RenameMobileNetworkDialogFragment extends InstrumentedDialogFragmen
     }
 
     /*
-    * Get the color index from previous color that defined in Android OS
-    * (frameworks/base/core/res/res/values/arrays.xml). If can't find the color, continue to look
-    * for it in the new color plattee. If not, give it the first index.
-    */
+     * Get the color index from previous color that defined in Android OS
+     * (frameworks/base/core/res/res/values/arrays.xml). If can't find the color, continue to look
+     * for it in the new color plattee. If not, give it the first index.
+     */
 
     private int getSimColorIndex(int color) {
         int index = -1;