diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index fc724127..0d46f354 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -941,7 +941,9 @@ public class MpMasterService extends Service {
             Method method = subscriptionManager.getClass().getDeclaredMethod("setDefaultDataSubId", int.class);
             method.invoke(subscriptionManager, subId);
             TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
-            telephonyManager.setDataEnabled(true);
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                telephonyManager.setDataEnabled(true);
+            }
             Method method1 = telephonyManager.getClass().getDeclaredMethod("setDataEnabled", boolean.class);
             method1.invoke(telephonyManager, true);
         } catch (Exception e) {