diff --git a/tests/src/approve.test.js b/tests/src/approve.test.js
new file mode 100644
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+++ b/tests/src/approve.test.js
@@ -0,0 +1,168 @@
+import "core-js/stable";
+import "regenerator-runtime/runtime";
+import Eth from "@ledgerhq/hw-app-eth";
+import { byContractAddress } from "@ledgerhq/hw-app-eth/erc20";
+import Zemu from "@zondax/zemu";
+import { TransportStatusError } from "@ledgerhq/errors";
+import { expect } from "../jest";
+
+const {NANOS_ELF_PATH, NANOX_ELF_PATH, sim_options_nanos, sim_options_nanox} = require("generic.js");
+
+const ORIGINAL_SNAPSHOT_PATH_PREFIX = "snapshots/approve/";
+const SNAPSHOT_PATH_PREFIX = "snapshots/tmp/";
+
+const ORIGINAL_SNAPSHOT_PATH_NANOS = ORIGINAL_SNAPSHOT_PATH_PREFIX + "nanos/";
+const ORIGINAL_SNAPSHOT_PATH_NANOX = ORIGINAL_SNAPSHOT_PATH_PREFIX + "nanox/";
+
+const SNAPSHOT_PATH_NANOS = SNAPSHOT_PATH_PREFIX + "nanos/";
+const SNAPSHOT_PATH_NANOX = SNAPSHOT_PATH_PREFIX + "nanox/";
+
+
+test("Approve shiba tokens nanos", async () => {
+  jest.setTimeout(100000);
+  const sim = new Zemu(NANOS_ELF_PATH);
+
+  try {
+    await sim.start(sim_options_nanos);
+
+    let transport = await sim.getTransport();
+
+    let buffer = Buffer.from("058000002C8000003C800000010000000000000000F869458502540BE40082DA359495AD61B0A150D79219DCF64E1E6CC01F0B64C4CE80B844095EA7B3000000000000000000000000E592427A0AECE92DE3EDEE1F18E0157C05861564FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF018080", "hex");
+
+    // Send transaction
+    let tx = transport.send(0xe0, 0x04, 0x00, 0x00, buffer);
+    let filename;
+
+    await sim.waitUntilScreenIsNot(sim.getMainMenuSnapshot());
+    // Review tx
+    filename = "review.png";
+    await sim.snapshot(SNAPSHOT_PATH_NANOS + filename);
+    const review = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_review = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(review).toEqual(expected_review);
+
+    // Amount 1/3
+    filename = "amount_1.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const amount_1 = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_amount_1 = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(amount_1).toEqual(expected_amount_1);
+
+    // Amount 2/3
+    filename = "amount_2.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const amount_2 = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_amount_2 = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(amount_2).toEqual(expected_amount_2);
+
+    // Amount 3/3
+    filename = "amount_3.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const amount_3 = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_amount_3 = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(amount_3).toEqual(expected_amount_3);
+
+    // Address 1/3
+    filename = "address_1.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const address_1 = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_address_1 = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(address_1).toEqual(expected_address_1);
+
+    // Address 2/3
+    filename = "address_2.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const address_2 = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_address_2 = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(address_2).toEqual(expected_address_2);
+
+    // Address 3/3
+    filename = "address_3.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const address_3 = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_address_3 = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(address_3).toEqual(expected_address_3);
+
+    // Max Fees
+    filename = "fees.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const fees = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_fees = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(fees).toEqual(expected_fees);
+
+    // Accept
+    filename = "accept.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOS + filename);
+    const accept = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOS + filename);
+    const expected_accept = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOS + filename);
+    expect(accept).toEqual(expected_accept);
+
+    await sim.clickBoth();
+
+    await expect(tx).resolves.toEqual(
+      Buffer.from([])
+    );
+  } finally {
+    await sim.close();
+  }
+});
+
+test("Approve shiba token nanox", async () => {
+  jest.setTimeout(100000);
+  const sim = new Zemu(NANOX_ELF_PATH);
+
+  try {
+    await sim.start(sim_options_nanox);
+
+    let transport = await sim.getTransport();
+    let buffer = Buffer.from("058000002C8000003C800000010000000000000000F869458502540BE40082DA359495AD61B0A150D79219DCF64E1E6CC01F0B64C4CE80B844095EA7B3000000000000000000000000E592427A0AECE92DE3EDEE1F18E0157C05861564FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF018080", "hex");
+
+    // Send transaction
+    let tx = transport.send(0xe0, 0x04, 0x00, 0x00, buffer);
+    let filename;
+
+    await sim.waitUntilScreenIsNot(sim.getMainMenuSnapshot());
+    // Review tx
+    filename = "review.png";
+    await sim.snapshot(SNAPSHOT_PATH_NANOX + filename);
+    const review = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOX + filename);
+    const expected_review = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOX + filename);
+    expect(review).toEqual(expected_review);
+
+    // Amount
+    filename = "amount.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOX + filename);
+    const amount = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOX + filename);
+    const expected_amount = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOX + filename);
+    expect(amount).toEqual(expected_amount);
+
+    // Address
+    filename = "address.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOX + filename);
+    const address = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOX + filename);
+    const expected_address = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOX + filename);
+    expect(address).toEqual(expected_address);
+
+    // Max Fees
+    filename = "fees.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOX + filename);
+    const fees = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOX + filename);
+    const expected_fees = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOX + filename);
+    expect(fees).toEqual(expected_fees);
+
+    // Accept
+    filename = "accept.png";
+    await sim.clickRight(SNAPSHOT_PATH_NANOX + filename);
+    const accept = Zemu.LoadPng2RGB(SNAPSHOT_PATH_NANOX + filename);
+    const expected_accept = Zemu.LoadPng2RGB(ORIGINAL_SNAPSHOT_PATH_NANOX + filename);
+    expect(accept).toEqual(expected_accept);
+
+    await sim.clickBoth();
+
+    await expect(tx).resolves.toEqual(
+      Buffer.from([])
+    );
+  } finally {
+    await sim.close();
+  }
+});
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