diff --git a/doc/examples/2g_osmocom/suites/sms/mo_mt_sms.py b/doc/examples/2g_osmocom/suites/sms/mo_mt_sms.py
index 51e78c05..d7606e45 100755
--- a/doc/examples/2g_osmocom/suites/sms/mo_mt_sms.py
+++ b/doc/examples/2g_osmocom/suites/sms/mo_mt_sms.py
@@ -33,8 +33,8 @@ ms_mo.log_info()
 ms_mt.log_info()
 
 print('waiting for modems to attach...')
-wait(ms_mo.is_connected, msc.mcc_mnc())
-wait(ms_mt.is_connected, msc.mcc_mnc())
+wait(ms_mo.is_registered, msc.mcc_mnc())
+wait(ms_mt.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms_mo, ms_mt)
 
 sms = ms_mo.sms_send(ms_mt)
diff --git a/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py b/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
index d90c80bd..d84c0782 100755
--- a/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
+++ b/doc/examples/4g_srsLTE/suites/4g/iperf3_dl.py
@@ -26,7 +26,7 @@ iperf3srv.start()
 proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_DL, ue.netns(), bitrate=max_rate)
 
 print('waiting for UE to attach...')
-wait(ue.is_connected, None)
+wait(ue.is_registered, None)
 print('UE is attached')
 
 print("Running iperf3 client to %s through %s" % (str(iperf3cli), ue.netns()))
diff --git a/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py b/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py
index 453cdfa1..25926327 100755
--- a/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py
+++ b/doc/examples/4g_srsLTE/suites/4g/iperf3_ul.py
@@ -26,7 +26,7 @@ iperf3srv.start()
 proc = iperf3cli.prepare_test_proc(iperf3cli.DIR_UL, ue.netns(), bitrate=max_rate)
 
 print('waiting for UE to attach...')
-wait(ue.is_connected, None)
+wait(ue.is_registered, None)
 print('UE is attached')
 
 print("Running iperf3 client to %s through %s" % (str(iperf3cli), ue.netns()))
diff --git a/doc/examples/4g_srsLTE/suites/4g/ping.py b/doc/examples/4g_srsLTE/suites/4g/ping.py
index c81a35da..ca35053d 100755
--- a/doc/examples/4g_srsLTE/suites/4g/ping.py
+++ b/doc/examples/4g_srsLTE/suites/4g/ping.py
@@ -16,7 +16,7 @@ print('ENB is connected to EPC')
 
 ue.connect(enb)
 print('waiting for UE to attach...')
-wait(ue.is_connected, None)
+wait(ue.is_registered, None)
 print('UE is attached')
 
 proc = ue.run_netns_wait('ping', ('ping', '-c', '10', epc.tun_addr()))
diff --git a/src/osmo_gsm_tester/obj/ms_ofono.py b/src/osmo_gsm_tester/obj/ms_ofono.py
index e03427ec..cec68241 100644
--- a/src/osmo_gsm_tester/obj/ms_ofono.py
+++ b/src/osmo_gsm_tester/obj/ms_ofono.py
@@ -519,10 +519,6 @@ class Modem(MS):
             return True
         return False
 
-    def is_connected(self, mcc_mnc=None):
-        '''Convenience helper to keep old test API'''
-        return self.is_registered(mcc_mnc)
-
     def schedule_scan_register(self, mcc_mnc):
         if self.register_attempts > NETREG_MAX_REGISTER_ATTEMPTS:
             raise log.Error('Failed to find Network Operator', mcc_mnc=mcc_mnc, attempts=self.register_attempts)
@@ -547,7 +543,7 @@ class Modem(MS):
         # So far the easiest seems to check if we are now registered and
         # otherwise schedule a scan again.
         self.err('Scan() failed, retrying if needed:', e)
-        if not self.is_connected(mcc_mnc):
+        if not self.is_registered(mcc_mnc):
             self.schedule_scan_register(mcc_mnc)
         else:
             self.log('Already registered with network', mcc_mnc)
@@ -632,7 +628,7 @@ class Modem(MS):
         self.cancel_pending_dbus_methods()
         self.power_cycle()
         self.register_attempts = 0
-        if self.is_connected(mcc_mnc):
+        if self.is_registered(mcc_mnc):
             self.log('Already registered with', mcc_mnc if mcc_mnc else 'default network')
         else:
             self.log('Connect to', mcc_mnc if mcc_mnc else 'default network')
diff --git a/sysmocom/suites/debug/interactive.py b/sysmocom/suites/debug/interactive.py
index fa53cc88..3b6a338a 100755
--- a/sysmocom/suites/debug/interactive.py
+++ b/sysmocom/suites/debug/interactive.py
@@ -54,7 +54,7 @@ while True:
   elif 'wait-registered'.startswith(cmd):
     try:
       for m in modems:
-          wait(m.is_connected, msc.mcc_mnc())
+          wait(m.is_registered, msc.mcc_mnc())
       wait(msc.subscriber_attached, *modems)
     except Timeout:
       print('Timeout while waiting for registration.')
diff --git a/sysmocom/suites/dynts/switch_tch_pdch.py b/sysmocom/suites/dynts/switch_tch_pdch.py
index 7be4be7a..26c108ee 100755
--- a/sysmocom/suites/dynts/switch_tch_pdch.py
+++ b/sysmocom/suites/dynts/switch_tch_pdch.py
@@ -76,8 +76,8 @@ ms_mo.log_info()
 ms_mt.log_info()
 
 print('waiting for modems to attach...')
-wait(ms_mo.is_connected, msc.mcc_mnc())
-wait(ms_mt.is_connected, msc.mcc_mnc())
+wait(ms_mo.is_registered, msc.mcc_mnc())
+wait(ms_mt.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms_mo)
 wait(msc.subscriber_attached, ms_mt)
 
diff --git a/sysmocom/suites/encryption/lib/testlib.py b/sysmocom/suites/encryption/lib/testlib.py
index ed76e6ff..87581c6d 100644
--- a/sysmocom/suites/encryption/lib/testlib.py
+++ b/sysmocom/suites/encryption/lib/testlib.py
@@ -39,7 +39,7 @@ def encryption_test_setup_run(enable_auth, algo):
         sleep(40) # TODO: read pcap or CTRL interface and look for Rejected? (gsm_a.dtap.msg_mm_type == 0x04)
         print('Asserting modem did not register')
         # FIXME: this can fail because ofono qmi signals registered before being accepted by network. See OS#2458
-        # assert not ms.is_connected(msc.mcc_mnc())
+        # assert not ms.is_registered(msc.mcc_mnc())
         assert not msc.subscriber_attached(ms)
 
         hlr.subscriber_delete(ms)
@@ -50,5 +50,5 @@ def encryption_test_setup_run(enable_auth, algo):
     else:
         print('Attempt connection with wrong KI, should work as it is not used...')
     ms.connect(msc.mcc_mnc())
-    wait(ms.is_connected, msc.mcc_mnc())
+    wait(ms.is_registered, msc.mcc_mnc())
     wait(msc.subscriber_attached, ms)
diff --git a/sysmocom/suites/gprs/lib/testlib.py b/sysmocom/suites/gprs/lib/testlib.py
index 14212297..510dc720 100644
--- a/sysmocom/suites/gprs/lib/testlib.py
+++ b/sysmocom/suites/gprs/lib/testlib.py
@@ -85,7 +85,7 @@ def setup_run_iperf3_test_parallel(num_ms, ready_cb=None):
 
     print('waiting for modems to attach...')
     for ms in ms_li:
-        wait(ms.is_connected, msc.mcc_mnc())
+        wait(ms.is_registered, msc.mcc_mnc())
     wait(msc.subscriber_attached, *ms_li)
 
     print('waiting for modems to attach to data services...')
diff --git a/sysmocom/suites/gprs/ping.py b/sysmocom/suites/gprs/ping.py
index 9a7acde6..421aa264 100755
--- a/sysmocom/suites/gprs/ping.py
+++ b/sysmocom/suites/gprs/ping.py
@@ -40,7 +40,7 @@ ms.attach()
 ms.log_info()
 
 print('waiting for modems to attach...')
-wait(ms.is_connected, msc.mcc_mnc())
+wait(ms.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms)
 
 print('waiting for modems to attach to data services...')
diff --git a/sysmocom/suites/gprs/ping_idle_ping.py b/sysmocom/suites/gprs/ping_idle_ping.py
index 88ecbdb0..099650c0 100755
--- a/sysmocom/suites/gprs/ping_idle_ping.py
+++ b/sysmocom/suites/gprs/ping_idle_ping.py
@@ -45,7 +45,7 @@ ms.attach()
 ms.log_info()
 
 print('waiting for modems to attach...')
-wait(ms.is_connected, msc.mcc_mnc())
+wait(ms.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms)
 
 print('waiting for modems to attach to data services...')
diff --git a/sysmocom/suites/nitb_debug/interactive.py b/sysmocom/suites/nitb_debug/interactive.py
index bd68a57d..21f4175f 100755
--- a/sysmocom/suites/nitb_debug/interactive.py
+++ b/sysmocom/suites/nitb_debug/interactive.py
@@ -31,7 +31,7 @@ while True:
   elif 'wait-registered'.startswith(cmd):
     try:
       for m in modems:
-         wait(m.is_connected, nitb.mcc_mnc())
+         wait(m.is_registered, nitb.mcc_mnc())
       wait(nitb.subscriber_attached, *modems)
     except Timeout:
       print('Timeout while waiting for registration.')
diff --git a/sysmocom/suites/nitb_netreg/register.py b/sysmocom/suites/nitb_netreg/register.py
index fd171b35..4977f66f 100755
--- a/sysmocom/suites/nitb_netreg/register.py
+++ b/sysmocom/suites/nitb_netreg/register.py
@@ -18,5 +18,5 @@ ms.connect(nitb.mcc_mnc())
 
 print(ms.info())
 
-wait(ms.is_connected, nitb.mcc_mnc())
+wait(ms.is_registered, nitb.mcc_mnc())
 wait(nitb.subscriber_attached, ms)
diff --git a/sysmocom/suites/nitb_netreg/register_default.py b/sysmocom/suites/nitb_netreg/register_default.py
index 6531049a..67299fe0 100755
--- a/sysmocom/suites/nitb_netreg/register_default.py
+++ b/sysmocom/suites/nitb_netreg/register_default.py
@@ -18,5 +18,5 @@ ms.connect()
 
 print(ms.info())
 
-wait(ms.is_connected)
+wait(ms.is_registered)
 wait(nitb.subscriber_attached, ms)
diff --git a/sysmocom/suites/nitb_smpp/esme_ms_sms_storeforward.py b/sysmocom/suites/nitb_smpp/esme_ms_sms_storeforward.py
index 29a5ced5..f9617e23 100755
--- a/sysmocom/suites/nitb_smpp/esme_ms_sms_storeforward.py
+++ b/sysmocom/suites/nitb_smpp/esme_ms_sms_storeforward.py
@@ -38,7 +38,7 @@ umref = esme.sms_send_wait_resp(msg, esme.MSGMODE_STOREFORWARD, receipt=True)
 
 print('MS registers and will receive the SMS...')
 ms.connect(nitb.mcc_mnc())
-wait(ms.is_connected, nitb.mcc_mnc())
+wait(ms.is_registered, nitb.mcc_mnc())
 wait(nitb.subscriber_attached, ms)
 wait(ms.sms_was_received, msg)
 print('Waiting to receive and consume sms receipt with reference', umref)
diff --git a/sysmocom/suites/nitb_smpp/esme_ms_sms_transaction.py b/sysmocom/suites/nitb_smpp/esme_ms_sms_transaction.py
index 2963b6e7..ade8054a 100755
--- a/sysmocom/suites/nitb_smpp/esme_ms_sms_transaction.py
+++ b/sysmocom/suites/nitb_smpp/esme_ms_sms_transaction.py
@@ -28,7 +28,7 @@ ms.connect(nitb.mcc_mnc())
 
 ms.log_info()
 print('waiting for modem to attach...')
-wait(ms.is_connected, nitb.mcc_mnc())
+wait(ms.is_registered, nitb.mcc_mnc())
 wait(nitb.subscriber_attached, ms)
 
 print('sending first sms...')
diff --git a/sysmocom/suites/nitb_sms/mo_mt_sms.py b/sysmocom/suites/nitb_sms/mo_mt_sms.py
index d1cece69..0f2ebfce 100755
--- a/sysmocom/suites/nitb_sms/mo_mt_sms.py
+++ b/sysmocom/suites/nitb_sms/mo_mt_sms.py
@@ -22,8 +22,8 @@ ms_mo.log_info()
 ms_mt.log_info()
 
 print('waiting for modems to attach...')
-wait(ms_mo.is_connected, nitb.mcc_mnc())
-wait(ms_mt.is_connected, nitb.mcc_mnc())
+wait(ms_mo.is_registered, nitb.mcc_mnc())
+wait(ms_mt.is_registered, nitb.mcc_mnc())
 wait(nitb.subscriber_attached, ms_mo, ms_mt)
 
 sms = ms_mo.sms_send(ms_mt)
diff --git a/sysmocom/suites/nitb_ussd/assert_extension.py b/sysmocom/suites/nitb_ussd/assert_extension.py
index 6246e613..e5471313 100755
--- a/sysmocom/suites/nitb_ussd/assert_extension.py
+++ b/sysmocom/suites/nitb_ussd/assert_extension.py
@@ -19,7 +19,7 @@ ms.connect(nitb.mcc_mnc())
 ms.log_info()
 
 print('waiting for modems to attach...')
-wait(ms.is_connected, nitb.mcc_mnc())
+wait(ms.is_registered, nitb.mcc_mnc())
 wait(nitb.subscriber_attached, ms)
 
 # ofono (qmi) currently changes state to 'registered' jut after sending
diff --git a/sysmocom/suites/smpp/esme_ms_sms_storeforward.py b/sysmocom/suites/smpp/esme_ms_sms_storeforward.py
index 232d1d3f..6ec414b4 100755
--- a/sysmocom/suites/smpp/esme_ms_sms_storeforward.py
+++ b/sysmocom/suites/smpp/esme_ms_sms_storeforward.py
@@ -50,7 +50,7 @@ umref = esme.sms_send_wait_resp(msg, esme.MSGMODE_STOREFORWARD, receipt=True)
 
 print('MS registers and will receive the SMS...')
 ms.connect(msc.mcc_mnc())
-wait(ms.is_connected, msc.mcc_mnc())
+wait(ms.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms)
 wait(ms.sms_was_received, msg)
 print('Waiting to receive and consume sms receipt with reference', umref)
diff --git a/sysmocom/suites/smpp/esme_ms_sms_transaction.py b/sysmocom/suites/smpp/esme_ms_sms_transaction.py
index d42012b5..5a5a470b 100755
--- a/sysmocom/suites/smpp/esme_ms_sms_transaction.py
+++ b/sysmocom/suites/smpp/esme_ms_sms_transaction.py
@@ -38,7 +38,7 @@ ms.connect(msc.mcc_mnc())
 
 ms.log_info()
 print('waiting for modem to attach...')
-wait(ms.is_connected, msc.mcc_mnc())
+wait(ms.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms)
 
 print('sending first sms...')
diff --git a/sysmocom/suites/sms/mo_mt_sms.py b/sysmocom/suites/sms/mo_mt_sms.py
index 51e78c05..d7606e45 100755
--- a/sysmocom/suites/sms/mo_mt_sms.py
+++ b/sysmocom/suites/sms/mo_mt_sms.py
@@ -33,8 +33,8 @@ ms_mo.log_info()
 ms_mt.log_info()
 
 print('waiting for modems to attach...')
-wait(ms_mo.is_connected, msc.mcc_mnc())
-wait(ms_mt.is_connected, msc.mcc_mnc())
+wait(ms_mo.is_registered, msc.mcc_mnc())
+wait(ms_mt.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms_mo, ms_mt)
 
 sms = ms_mo.sms_send(ms_mt)
diff --git a/sysmocom/suites/ussd/assert_extension.py b/sysmocom/suites/ussd/assert_extension.py
index bac311f7..87f2ee54 100755
--- a/sysmocom/suites/ussd/assert_extension.py
+++ b/sysmocom/suites/ussd/assert_extension.py
@@ -31,7 +31,7 @@ ms.connect(msc.mcc_mnc())
 ms.log_info()
 
 print('waiting for modems to attach...')
-wait(ms.is_connected, msc.mcc_mnc())
+wait(ms.is_registered, msc.mcc_mnc())
 wait(msc.subscriber_attached, ms)
 
 # ofono (qmi) currently changes state to 'registered' jut after sending
diff --git a/sysmocom/suites/voice/lib/testlib.py b/sysmocom/suites/voice/lib/testlib.py
index 3ec6d674..83a6de44 100644
--- a/sysmocom/suites/voice/lib/testlib.py
+++ b/sysmocom/suites/voice/lib/testlib.py
@@ -45,8 +45,8 @@ def test_mo_mt_call(use_osmux=False, force_osmux=False):
     ms_mt.log_info()
 
     print('waiting for modems to attach...')
-    wait(ms_mo.is_connected, msc.mcc_mnc())
-    wait(ms_mt.is_connected, msc.mcc_mnc())
+    wait(ms_mo.is_registered, msc.mcc_mnc())
+    wait(ms_mt.is_registered, msc.mcc_mnc())
     wait(msc.subscriber_attached, ms_mo, ms_mt)
 
     assert len(ms_mo.call_id_list()) == 0 and len(ms_mt.call_id_list()) == 0