diff --git a/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py b/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py
index 57e797430..d62c8bc5e 100644
--- a/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py
+++ b/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py
@@ -16,6 +16,34 @@
 # XDR decoding tool available at:
 #   https://www.stellar.org/laboratory/#xdr-viewer
 #
+# ## Test Info
+#
+# The default mnemonic generates the following Stellar keypair at path 44'/148'/0':
+#   GAK5MSF74TJW6GLM7NLTL76YZJKM2S4CGP3UH4REJHPHZ4YBZW2GSBPW
+#   SDE2YU4V2IYSJIUH7MONDYZTSSLDXV5QDEGUUOLCU4TK7CZWTAXZ5CEG
+#
+# ### Testing a new Operation
+#
+# 1. Start at the Stellar transaction builder: https://www.stellar.org/laboratory/#txbuilder?network=test
+#   (Verify that the "test" network is active in the upper right)
+#
+# 2. Fill out the fields at the top as follows:
+#   Source account: GAK5MSF74TJW6GLM7NLTL76YZJKM2S4CGP3UH4REJHPHZ4YBZW2GSBPW
+#   Transaction sequence number: 4294967296 (see _create_msg)
+#   Base fee: 100
+#   Memo: None
+#   Time Bounds: <leave blank>
+#
+# 3. Select the operation to test, such as Create Account
+#
+# 4. Fill out the fields for the operation
+#
+# 5. Scroll down to the bottom of the page and click "Sign in Transaction Signer"
+#
+# 6. In the first "Add Signer" text box enter the secret key: SDE2YU4V2IYSJIUH7MONDYZTSSLDXV5QDEGUUOLCU4TK7CZWTAXZ5CEG
+#
+# 7. Scroll down to the bottom and look at the "signatures" section. The Trezor should generate the same signature
+#
 
 from base64 import b64encode
 from .common import TrezorTest
@@ -32,10 +60,7 @@ import pytest
 class TestMsgStellarSignTransaction(TrezorTest):
 
     ADDRESS_N = parse_path(stellar.DEFAULT_BIP32_PATH)
-
-    def get_network_passphrase(self):
-        """Use the same passphrase as the network that generated the test XDR/signatures"""
-        return "Integration Test Network ; zulucrypto"
+    NETWORK_PASSPHRASE = 'Test SDF Network ; September 2015'
 
     def test_sign_tx_bump_sequence_op(self):
         self.setup_mnemonic_nopin_nopassphrase()
@@ -44,8 +69,8 @@ class TestMsgStellarSignTransaction(TrezorTest):
         op.bump_to = 0x7fffffffffffffff
         tx = self._create_msg()
 
-        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.get_network_passphrase())
-        assert b64encode(response.signature) == b'UAOL4ZPYIOzEgM66kBrhyNjLR66dNXtuNrmvd3m0/pc8qCSoLmYY4TybS0lHiMtb+LFZESTaxrpErMHz1sZ6DQ=='
+        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.NETWORK_PASSPHRASE)
+        assert b64encode(response.signature) == b'ZMIfHWhpyXdg40PzwOtkcXYnbZIO12Qy0WvkGqoYpb7jyWbG2HQCG7dgWhCoU5K81pvZTA2pMwiPjMwCXA//Bg=='
 
     def test_sign_tx_account_merge_op(self):
         self.setup_mnemonic_nopin_nopassphrase()
@@ -56,10 +81,70 @@ class TestMsgStellarSignTransaction(TrezorTest):
 
         tx = self._create_msg()
 
-        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.get_network_passphrase())
+        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.NETWORK_PASSPHRASE)
 
         assert hexlify(response.public_key) == b'15d648bfe4d36f196cfb5735ffd8ca54cd4b8233f743f22449de7cf301cdb469'
-        assert b64encode(response.signature) == b'gjoPRj4sW5o7NAXzYOqPK0uxfPbeKb4Qw48LJiCH/XUZ6YVCiZogePC0Z5ISUlozMh6YO6HoYtuLPbm7jq+eCA=='
+        assert b64encode(response.signature) == b'2R3Pj89U+dWrqy7otUrLLjtANjAg0lmBQL8E+89Po0Y94oqZkauP8j3WE7+/z7vF6XvAMLoOdqRYkUzr2oh7Dg=='
+
+    def test_sign_tx_create_account_op(self):
+        """Create new account with initial balance of 100.0333"""
+        self.setup_mnemonic_nopin_nopassphrase()
+
+        op = proto.StellarCreateAccountOp()
+        op.new_account = stellar.address_to_public_key("GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V")
+        op.starting_balance = 1000333000
+
+        tx = self._create_msg()
+
+        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.NETWORK_PASSPHRASE)
+
+        assert b64encode(response.signature) == b'vrRYqkM4b54NrDR05UrW7ZHU7CNcidV0fn+bk9dqOW1bCbmX3YfeRbk2Tf1aea8nr9SD0sfBhtrDpdyxUenjBw=='
+
+    def test_sign_tx_payment_op_native(self):
+        """Native payment of 50.0111 XLM to GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V"""
+        self.setup_mnemonic_nopin_nopassphrase()
+
+        op = proto.StellarPaymentOp()
+        op.amount = 500111000
+        op.destination_account = stellar.address_to_public_key("GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V")
+
+        tx = self._create_msg()
+
+        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.NETWORK_PASSPHRASE)
+
+        assert b64encode(response.signature) == b'pDc6ghKCLNoYbt3h4eBw+533237m0BB0Jp/d/TxJCA83mF3o5Fr4l5vwAWBR62hdTWAP9MhVluY0cd5i54UwDg=='
+
+    def test_sign_tx_payment_op_custom_asset1(self):
+        """Custom asset payment (code length 1) of 50.0111 X to GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V"""
+        self.setup_mnemonic_nopin_nopassphrase()
+
+        op = proto.StellarPaymentOp()
+        op.amount = 500111000
+        op.destination_account = stellar.address_to_public_key("GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V")
+
+        op.asset = proto.StellarAssetType(1, "X", stellar.address_to_public_key("GAUYJFQCYIHFQNS7CI6BFWD2DSSFKDIQZUQ3BLQODDKE4PSW7VVBKENC"))
+
+        tx = self._create_msg()
+
+        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.NETWORK_PASSPHRASE)
+
+        assert b64encode(response.signature) == b'ArZydOtXU2whoRuSjJLFIWPSIsq3AbsncJZ+THF24CRSriVWw5Fy/dHrDlUOu4fzU28I6osDMeI39aWezg5tDw=='
+
+    def test_sign_tx_payment_op_custom_asset12(self):
+        """Custom asset payment (code length 12) of 50.0111 ABCDEFGHIJKL to GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V"""
+        self.setup_mnemonic_nopin_nopassphrase()
+
+        op = proto.StellarPaymentOp()
+        op.amount = 500111000
+        op.destination_account = stellar.address_to_public_key("GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V")
+
+        op.asset = proto.StellarAssetType(2, "ABCDEFGHIJKL", stellar.address_to_public_key("GAUYJFQCYIHFQNS7CI6BFWD2DSSFKDIQZUQ3BLQODDKE4PSW7VVBKENC"))
+
+        tx = self._create_msg()
+
+        response = self.client.stellar_sign_transaction(tx, [op], self.ADDRESS_N, self.NETWORK_PASSPHRASE)
+
+        assert b64encode(response.signature) == b'QZIP4XKPfe4OpZtuJiyrMZBX9YBzvGpHGcngdgFfHn2kcdONreF384/pCF80xfEnGm8grKaoOnUEKxqcMKvxAA=='
 
     def _create_msg(self) -> proto.StellarSignTx:
         tx = proto.StellarSignTx()