diff --git a/pySim/commands.py b/pySim/commands.py
index eba915c..9e16b0e 100644
--- a/pySim/commands.py
+++ b/pySim/commands.py
@@ -23,7 +23,7 @@
 #
 
 from pySim.utils import rpad, b2h
-
+from pytlv.TLV import *
 
 class SimCardCommands(object):
 	def __init__(self, transport):
@@ -31,6 +31,56 @@
 		self._cla_byte = "a0"
 		self.sel_ctrl = "0000"
 
+	# Get file size from FCP
+	def __get_len_from_tlv(self, fcp):
+		# see also: ETSI TS 102 221, chapter 11.1.1.3.1 Response for MF,
+		# DF or ADF
+		tlvparser = TLV(['82', '83', '84', 'A5', '8a', '8b', '8c', '80', 'ab', 'c6', '81', '88'])
+
+		# pytlv is case sensitive!
+		fcp = fcp.lower()
+
+		if fcp[0:2] != '62':
+			raise ValueError('Tag of the FCP template does not match, expected 62 but got %s'%fcp[0:2])
+
+		# Unfortunately the spec is not very clear if the FCP length is
+		# coded as one or two byte vale, so we have to try it out by
+		# checking if the length of the remaining TLV string matches
+		# what we get in the length field.
+		# See also ETSI TS 102 221, chapter 11.1.1.3.0 Base coding.
+		exp_tlv_len = int(fcp[2:4], 16)
+		if len(fcp[4:])/2 == exp_tlv_len:
+			skip = 4
+		else:
+			exp_tlv_len = int(fcp[2:6], 16)
+			if len(fcp[4:])/2 == exp_tlv_len:
+				skip = 6
+
+		# Skip FCP tag and length
+		tlv = fcp[skip:]
+		tlv_parsed = tlvparser.parse(tlv)
+
+		return int(tlv_parsed['80'], 16)
+
+        # Tell the length of a record by the card response
+        # USIMs respond with an FCP template, which is different
+        # from what SIMs responds. See also:
+        # USIM: ETSI TS 102 221, chapter 11.1.1.3 Response Data
+        # SIM: GSM 11.11, chapter 9.2.1 SELECT
+	def __record_len(self, r):
+                if self.sel_ctrl == "0004":
+                        return self.__get_len_from_tlv(r[-1])
+                else:
+                        return int(r[-1][28:30], 16)
+
+        # Tell the length of a binary file. See also comment
+        # above.
+	def __len(self, r):
+                if self.sel_ctrl == "0004":
+                        return self.__get_len_from_tlv(r[-1])
+                else:
+                        return int(r[-1][4:8], 16)
+
 	def get_atr(self):
 		return self._tp.get_atr()
 
@@ -60,7 +110,7 @@
 			ef = [ef]
 		r = self.select_file(ef)
 		if length is None:
-			length = int(r[-1][4:8], 16) - offset
+			length = self.__len(r) - offset
 		pdu = self.cla_byte + 'b0%04x%02x' % (offset, (min(256, length) & 0xff))
 		return self._tp.send_apdu(pdu)
 
@@ -75,7 +125,7 @@
 		if not hasattr(type(ef), '__iter__'):
 			ef = [ef]
 		r = self.select_file(ef)
-		rec_length = int(r[-1][28:30], 16)
+		rec_length = self.__record_len(r)
 		pdu = self.cla_byte + 'b2%02x04%02x' % (rec_no, rec_length)
 		return self._tp.send_apdu(pdu)
 
@@ -84,7 +134,7 @@
 			ef = [ef]
 		r = self.select_file(ef)
 		if not force_len:
-			rec_length = int(r[-1][28:30], 16)
+			rec_length = self.__record_len(r)
 			if (len(data)/2 != rec_length):
 				raise ValueError('Invalid data length (expected %d, got %d)' % (rec_length, len(data)/2))
 		else:
@@ -94,11 +144,11 @@
 
 	def record_size(self, ef):
 		r = self.select_file(ef)
-		return int(r[-1][28:30], 16)
+		return self.__record_len(r)
 
 	def record_count(self, ef):
 		r = self.select_file(ef)
-		return int(r[-1][4:8], 16) // int(r[-1][28:30], 16)
+		return self.__len(r) // self.__record_len(r)
 
 	def run_gsm(self, rand):
 		if len(rand) != 32: