diff --git a/src/popup/index.html b/src/popup/index.html
index 6922bcd..b8f6f4e 100644
--- a/src/popup/index.html
+++ b/src/popup/index.html
@@ -943,6 +943,23 @@
                     <div class="text-xs text-muted mb-1">Transaction hash</div>
                     <div id="tx-detail-hash" class="text-xs break-all"></div>
                 </div>
+                <div
+                    id="tx-detail-decoded"
+                    class="mb-3 border border-border border-dashed p-2 hidden"
+                >
+                    <div
+                        id="tx-detail-action"
+                        class="font-bold mb-1 text-xs"
+                    ></div>
+                    <div id="tx-detail-decoded-details" class="text-xs"></div>
+                </div>
+                <div id="tx-detail-rawdata-section" class="mb-4 hidden">
+                    <div class="text-xs text-muted mb-1">Raw calldata</div>
+                    <div
+                        id="tx-detail-rawdata"
+                        class="text-xs break-all font-mono"
+                    ></div>
+                </div>
             </div>
 
             <!-- ============ TRANSACTION APPROVAL ============ -->
diff --git a/src/popup/views/transactionDetail.js b/src/popup/views/transactionDetail.js
index 8ecbfe3..9961e28 100644
--- a/src/popup/views/transactionDetail.js
+++ b/src/popup/views/transactionDetail.js
@@ -12,6 +12,8 @@ const {
     timeAgo,
 } = require("./helpers");
 const { state } = require("../../shared/state");
+const { TOKEN_BY_ADDRESS } = require("../../shared/tokenList");
+const { decodeCalldata } = require("../../shared/decodeCalldata");
 const makeBlockie = require("ethereum-blockies-base64");
 
 const EXT_ICON =
@@ -85,6 +87,8 @@ function show(tx) {
             fromEns: tx.fromEns || null,
             toEns: tx.toEns || null,
             directionLabel: tx.directionLabel || null,
+            rawInput: tx.rawInput || null,
+            decoded: tx.decoded || null,
         },
     };
     render();
@@ -124,6 +128,58 @@ function render() {
     $("tx-detail-time").textContent =
         isoDate(tx.timestamp) + " (" + timeAgo(tx.timestamp) + ")";
     $("tx-detail-status").textContent = tx.isError ? "Failed" : "Success";
+
+    // Decoded calldata section — matches approval screen format
+    const decodedEl = $("tx-detail-decoded");
+    const rawDataEl = $("tx-detail-rawdata-section");
+    const decoded = tx.decoded;
+
+    if (decoded) {
+        $("tx-detail-action").textContent = decoded.name;
+        let detailsHtml = "";
+        if (decoded.description) {
+            detailsHtml += `<div class="mb-2">${escapeHtml(decoded.description)}</div>`;
+        }
+        for (const d of decoded.details) {
+            detailsHtml += `<div class="mb-2">`;
+            detailsHtml += `<div class="text-muted">${escapeHtml(d.label)}</div>`;
+            if (d.address) {
+                if (d.isToken) {
+                    const t = TOKEN_BY_ADDRESS.get(d.address.toLowerCase());
+                    const label = t ? t.symbol : "Unknown token";
+                    detailsHtml += `<div class="font-bold">${escapeHtml(label)}</div>`;
+                }
+                const dot = addressDotHtml(d.address);
+                const link = `https://etherscan.io/address/${d.address}`;
+                detailsHtml +=
+                    `<div class="flex items-center">${dot}` +
+                    `<span class="break-all underline decoration-dashed cursor-pointer" data-copy="${escapeHtml(d.address)}">${escapeHtml(d.address)}</span>` +
+                    `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a></div>`;
+            } else {
+                detailsHtml += `<div class="font-bold">${escapeHtml(d.value)}</div>`;
+            }
+            detailsHtml += `</div>`;
+        }
+        $("tx-detail-decoded-details").innerHTML = detailsHtml;
+        decodedEl.classList.remove("hidden");
+    } else {
+        decodedEl.classList.add("hidden");
+    }
+
+    // Raw calldata section — shown for unknown contract calls (full, not truncated)
+    if (tx.rawInput && tx.rawInput !== "0x" && !decoded) {
+        $("tx-detail-rawdata").textContent = tx.rawInput;
+        rawDataEl.classList.remove("hidden");
+        // Label as unknown contract call
+        $("tx-detail-action").textContent = "Unknown Contract Call";
+        $("tx-detail-decoded-details").innerHTML = "";
+        decodedEl.classList.remove("hidden");
+    } else if (!decoded) {
+        rawDataEl.classList.add("hidden");
+    } else {
+        rawDataEl.classList.add("hidden");
+    }
+
     showView("transaction");
 
     document