diff --git a/common/android.py b/common/android.py
index e58b0e56e5..e88080884c 100644
--- a/common/android.py
+++ b/common/android.py
@@ -12,9 +12,13 @@ def getprop(key):
     return ""
   return subprocess.check_output(["getprop", key], encoding='utf8').strip()
 
-def get_imei():
-  ret = getprop("oem.device.imeicache")
-  if ret == "":
+def get_imei(slot):
+  slot = str(slot)
+  if slot not in ("0", "1"):
+    raise ValueError("SIM slot must be 0 or 1")
+
+  ret = parse_service_call_string(["iphonesubinfo", "3" ,"i32", str(slot)])
+  if not ret:
     ret = "000000000000000"
   return ret
 
diff --git a/selfdrive/registration.py b/selfdrive/registration.py
index 5de1ec99bd..afa2771bc1 100644
--- a/selfdrive/registration.py
+++ b/selfdrive/registration.py
@@ -48,7 +48,7 @@ def register():
   try:
     cloudlog.info("getting pilotauth")
     resp = api_get("v2/pilotauth/", method='POST', timeout=15,
-                   imei=get_imei(), serial=get_serial(), public_key=public_key, register_token=register_token)
+                   imei=get_imei(0), imei2=get_imei(1), serial=get_serial(), public_key=public_key, register_token=register_token)
     dongleauth = json.loads(resp.text)
     dongle_id, access_token = dongleauth["dongle_id"], dongleauth["access_token"]