diff --git a/system/hardware/tici/modem.py b/system/hardware/tici/modem.py
index ebefd90c01..cb25d501d1 100755
--- a/system/hardware/tici/modem.py
+++ b/system/hardware/tici/modem.py
@@ -308,7 +308,7 @@ class Modem:
     if not (imei.isdigit() and 14 <= len(imei) <= 17):  # 3GPP TS 23.003
       imei = ""
 
-    iccid = self._atv("AT+QCCID", "+QCCID:") or ""
+    iccid = (self._atv("AT+QCCID", "+QCCID:") or "").rstrip("F")
     if not iccid.isdigit():
       iccid = ""
 
@@ -387,7 +387,7 @@ class Modem:
   def _check_iccid(self, state):
     if state in (State.INITIALIZING, State.DISCONNECTING) or not self.S["iccid"]:
       return
-    iccid = self._atv("AT+QCCID", "+QCCID:")
+    iccid = (self._atv("AT+QCCID", "+QCCID:") or "").rstrip("F")
     if iccid and iccid != self.S["iccid"]:
       logging.warning(f"iccid changed: {self.S['iccid']} -> {iccid}")
       self._sim_change = True