diff --git a/apps/mobile/src/utils/transaction.ts b/apps/mobile/src/utils/transaction.ts
index 3aa06f6d1..2fbd0549d 100644
--- a/apps/mobile/src/utils/transaction.ts
+++ b/apps/mobile/src/utils/transaction.ts
@@ -109,6 +109,9 @@ export const calcMaxPriorityFee = (
   useMaxFee: boolean,
 ) => {
   if (target.priority_price && target.priority_price !== null) {
+    if (target.priority_price > target.price) {
+      return target.price;
+    }
     return target.priority_price;
   }
   return target.price;
diff --git a/packages/biz-utils/src/isomorphic/biz-number.ts b/packages/biz-utils/src/isomorphic/biz-number.ts
index ace924ee1..1d369a91f 100644
--- a/packages/biz-utils/src/isomorphic/biz-number.ts
+++ b/packages/biz-utils/src/isomorphic/biz-number.ts
@@ -88,13 +88,28 @@ export const formatNumber = (
   return n.toFormat(decimal, format);
 };
 
+const Sub_Numbers = '₀₁₂₃₄₅₆₇₈₉';
+
 export const formatPrice = (price: string | number, len = 4) => {
   if ((price as number) >= 0.1) {
     return formatNumber(price);
   }
   if ((price as number) < 0.00001) {
     if (price.toString().length > 10) {
-      return Number(price).toExponential(len);
+      const s = new BigNumber(price).precision(4).toFormat();
+      const ss = s.replace(/^0.(0*)?(?:.*)/u, (_l, z: string) => {
+        const zeroLength = z.length;
+
+        const sub = `${zeroLength}`
+          .split('')
+          .map(x => Sub_Numbers[x as any])
+          .join('');
+
+        const end = s.slice(zeroLength + 2);
+        return `0.0${sub}${end}`;
+      });
+
+      return ss;
     }
     return price.toString();
   }