diff --git a/config/functions_site.php b/config/functions_site.php
index 4476ad3..5abc3cf 100644
--- a/config/functions_site.php
+++ b/config/functions_site.php
@@ -126,3 +126,14 @@ function site_sitemap_urls(PDO $pdo): array {
     }
     return $urls;
 }
+
+// E.164 form for tel: links and structured data. Numbers are stored however
+// the admin typed them ("964 201 137", "+351 231 451 346"); a bare 9-digit
+// Portuguese number gets +351 so the link also works from a foreign phone.
+function site_tel(?string $phone): string {
+    $p = preg_replace('/[^\d+]/', '', (string) $phone);
+    if ($p === '') return '';
+    if ($p[0] !== '+' && strlen($p) === 9) return '+351' . $p;
+    if ($p[0] !== '+' && str_starts_with($p, '00')) return '+' . substr($p, 2);
+    return $p;
+}
diff --git a/site/includes/seo.php b/site/includes/seo.php
index 8d4fca2..a50be38 100644
--- a/site/includes/seo.php
+++ b/site/includes/seo.php
@@ -9,7 +9,7 @@ $ld = [
     'image'    => base_url('site/assets/img/home.jpg'),
     'logo'     => base_url('site/assets/img/logos/logo_black.svg'),
 ];
-if (!empty($info['phone'])) $ld['telephone'] = $info['phone'];
+if (!empty($info['phone'])) $ld['telephone'] = site_tel($info['phone']);
 if (!empty($info['email'])) $ld['email']     = $info['email'];
 if (!empty($info['adress'])) {
     $ld['address'] = [
diff --git a/site/index.php b/site/index.php
index 4a2745d..bd75e07 100644
--- a/site/index.php
+++ b/site/index.php
@@ -18,7 +18,7 @@ $reviews     = site_reviews();              // null when not configured / nothin
 ?>
 <!-- Mobile sticky CTA bar -->
 <div class="mobile-cta-bar">
-    <a href="tel:<?= htmlspecialchars(str_replace(' ', '', $info['phone'] ?? '')) ?>" class="cta-btn cta-btn-call"><i class="fas fa-phone-alt"></i> Ligar</a>
+    <a href="tel:<?= htmlspecialchars(site_tel($info['phone'] ?? '')) ?>" class="cta-btn cta-btn-call"><i class="fas fa-phone-alt"></i> Ligar</a>
     <a href="#contactos" class="cta-btn cta-btn-cta smooth-scroll">Inscreve-te Já!</a>
 </div>
 
@@ -587,11 +587,11 @@ $session = session();
                     <div class="contact-info text-center text-md-left">
                         <i class="fas fa-phone-volume"></i>
                         <div class="cf-text">
-                            <a href="tel:<?= htmlspecialchars(str_replace(' ', '', $info['phone'] ?? '')) ?>">
+                            <a href="tel:<?= htmlspecialchars(site_tel($info['phone'] ?? '')) ?>">
                                 <p><?= htmlspecialchars($info['phone'] ?? '') ?></p>
                             </a>
                             <?php if (($info['telephone'] ?? '') !== ''): ?>
-                            <a href="tel:<?= htmlspecialchars(str_replace(' ', '', $info['telephone'])) ?>">
+                            <a href="tel:<?= htmlspecialchars(site_tel($info['telephone'])) ?>">
                                 <p><?= htmlspecialchars($info['telephone']) ?></p>
                             </a>
                             <?php endif; ?>