diff --git a/scripts/test-sms.mjs b/scripts/test-sms.mjs
index a4ebfe9..f2946d4 100644
--- a/scripts/test-sms.mjs
+++ b/scripts/test-sms.mjs
@@ -51,9 +51,12 @@ for (const mobile of targets) {
   const body = await res.text();
   const match = body.match(/<SendSMSResult[^>]*>([^<]*)<\/SendSMSResult>/i);
   const code = match?.[1]?.trim() ?? '?';
+  const n = Number(code);
+  const ok = Number.isFinite(n) ? n >= 0 : false;
+  const status = ok ? 'OK (accepted by 0098)' : 'FAILED';
 
-  console.log(`mobile=${mobile} http=${res.status} RESULT=${code}`);
-  if (code !== '0') {
+  console.log(`mobile=${mobile} http=${res.status} RESULT=${code} ${status}`);
+  if (!ok) {
     console.log(body.slice(0, 400));
   }
 }
diff --git a/src/modules/auth/sms.service.ts b/src/modules/auth/sms.service.ts
index 7114279..fbfab56 100644
--- a/src/modules/auth/sms.service.ts
+++ b/src/modules/auth/sms.service.ts
@@ -7,20 +7,9 @@ const SMS_0098_LINK_URL = 'http://www.0098sms.com/sendsmslink.aspx';
 /** Official 0098 SOAP API (works when link endpoint is down). */
 const SMS_0098_SOAP_URL = 'https://webservice.0098sms.com/service.asmx';
 
-const SMS_0098_ERROR_CODES: Record<string, string> = {
-  '1': 'invalid phone number',
-  '2': 'no phone number',
-  '3': 'no sender',
-  '4': 'no text',
-  '5': 'no username',
-  '6': 'no password',
-  '7': 'no domain',
-  '8': 'invalid license',
-  '9': 'insufficient SMS credit',
-  '10': 'no link for this number',
-  '11': 'no license for link access',
-  '12': 'wrong username or password',
-  '13': 'invalid characters in message text',
+/** SOAP SendSMSResult: 0 or positive = accepted (often SMS part count); negative = error. */
+const SMS_0098_SOAP_ERROR_CODES: Record<string, string> = {
+  '-22': 'invalid mobile number format',
 };
 
 export type SmsSendResult = {
@@ -142,12 +131,12 @@ export class SmsService {
       }
 
       const code = this.parseSoapResultCode(body);
-      if (code === '0') {
+      if (this.is0098SoapSuccess(code)) {
         return { ok: true, transport: 'soap' };
       }
 
       const reason =
-        SMS_0098_ERROR_CODES[code ?? ''] ??
+        SMS_0098_SOAP_ERROR_CODES[code ?? ''] ??
         (code ? `provider code ${code}` : 'unknown SOAP response');
       this.logger.warn(
         `SOAP rejected to=${this.maskPhone(to)} code=${code ?? '?'} body=${body.slice(0, 200)}`,
@@ -208,6 +197,17 @@ export class SmsService {
     }
   }
 
+  private is0098SoapSuccess(code: string | null): boolean {
+    if (code == null || code === '') {
+      return false;
+    }
+    const n = Number(code);
+    if (Number.isFinite(n)) {
+      return n >= 0;
+    }
+    return false;
+  }
+
   private parseSoapResultCode(xml: string): string | null {
     const match =
       xml.match(/<SendSMSResult[^>]*>([^<]*)<\/SendSMSResult>/i) ??
@@ -234,8 +234,8 @@ export class SmsService {
       return false;
     }
     const code = body.trim();
-    if (/^\d+$/.test(code) && code !== '0') {
-      return false;
+    if (/^-?\d+$/.test(code)) {
+      return Number(code) >= 0;
     }
     return true;
   }