Handle the case that the attached phone doesn't have a SIM card.
Correct the serial number print error.

Bug: 31941089
Test: None
Change-Id: I0bfd9bd7884ea6838c013d7a65856bf6716efecb
diff --git a/acts/tests/google/tel/etc/manage_sim.py b/acts/tests/google/tel/etc/manage_sim.py
index af6b1dd..1d51cb0 100755
--- a/acts/tests/google/tel/etc/manage_sim.py
+++ b/acts/tests/google/tel/etc/manage_sim.py
@@ -43,11 +43,11 @@
         droid = droid_device.get_droid(False)
 
         sub_info_list = droid.subscriptionGetActiveSubInfoList()
-        if not len(sub_info_list):
+        if not sub_info_list:
             if verbose_warnings:
-                print('No Valid Sim in {}! {}'.format(
-                    droid.serial, droid.telephonyGetSimState()))
-            return False
+                print('No Valid Sim in {} {}! SimState = {}'.format(
+                    droid_device.model, droid_device.serial, droid.telephonyGetSimState()))
+            continue
 
         for sub_info in sub_info_list:
             print(sub_info)