diff --git a/plugin-designs/country-posters/scripts/check-poster-section.mjs b/plugin-designs/country-posters/scripts/check-poster-section.mjs
index b432f21c7..6e823dfce 100644
--- a/plugin-designs/country-posters/scripts/check-poster-section.mjs
+++ b/plugin-designs/country-posters/scripts/check-poster-section.mjs
@@ -101,6 +101,22 @@ async function arms({ types, country, element, sectionSrc, viewSrc, cs }) {
   const local = new Set(['sec', 'z', 'item', 'n', 's', 'v', 'el', 'true', 'false', 'null', 'String', 'Number', '$event', 'in', 'label', 'zIndex'])
   const missing = [...used].filter((x) => !local.has(x) && !injected.has(x))
   if (missing.length) fails.push(`E: PosterSection.vue uses names it does not inject: ${missing.join(', ')}`)
+  // G: a phone cannot print a desktop-only large sheet THROUGH THE TYPE — the same rule as country-poster-wall.vue,
+  // mirrored in countryPosterType so the delegating regions list and any <dxm-poster-section> block it too. The only
+  // desktop-only large sheet is India's (withheld today), so the fixture is a NON-withheld India (indiaState => not
+  // withheld => largeSheet.desktopOnly). POISON: drop the phone rule and records() resolves / unsupported() is null.
+  {
+    const savedNav = globalThis.navigator
+    globalThis.navigator = { userAgent: 'iPhone', maxTouchPoints: 0 }
+    try {
+      const act = country.actions({ assetsBase: () => '', apiBase: () => '', lang: () => 'en', profileConfig: null, t: (k) => k })
+      const bigIndia = { id: 'country-ind-x', iso3: 'IND', indiaState: true, label: 'India', count: 855 }
+      if (act.unsupported(bigIndia) !== 'poster.phoneLimitAll') fails.push(`G: on a phone, unsupported() of a desktop-only large sheet should read poster.phoneLimitAll, got ${JSON.stringify(act.unsupported(bigIndia))}`)
+      let why = ''
+      try { await act.records(bigIndia); why = 'resolved' } catch (e) { why = e && (e.i18nKey || e.message) }
+      if (why !== 'poster.phoneLimitAll') fails.push(`G: on a phone, records() of a desktop-only large sheet should reject poster.phoneLimitAll, got ${JSON.stringify(why)}`)
+    } finally { if (savedNav === undefined) delete globalThis.navigator; else globalThis.navigator = savedNav }
+  }
   return fails
 }
 
@@ -136,7 +152,7 @@ try {
   } else {
     const f = await arms(real)
     if (f.length) { f.forEach((x) => console.log('FAIL ' + x)); code = 1 }
-    else console.log(`PASS check:poster-section — the 'country' type; ${DXL.length} DX Life scopes cover every country once (and their other spellings); India withheld by default; the element's attributes; PosterSection injects every name it uses`)
+    else console.log(`PASS check:poster-section — the 'country' type; ${DXL.length} DX Life scopes cover every country once (and their other spellings); India withheld by default; a phone blocks a desktop-only large sheet (poster.phoneLimitAll); the element's attributes; PosterSection injects every name it uses`)
   }
 } finally { await server.close() }
 process.exit(code)