diff --git a/app/Http/Controllers/DashboardController.php b/app/Http/Controllers/DashboardController.php
index 77d471a..3118736 100644
--- a/app/Http/Controllers/DashboardController.php
+++ b/app/Http/Controllers/DashboardController.php
@@ -3,6 +3,7 @@
 namespace App\Http\Controllers;
 
 use App\Models\KehadiranKtm;
+use App\Models\SaluranBermasalah;
 use App\Models\Sppm\Dun;
 use App\Models\Sppm\PetugasAssignment;
 use App\Models\Sppm\PusatMengundi;
@@ -46,6 +47,11 @@ class DashboardController extends Controller
             ->get()
             ->keyBy('assignment_id');
 
+        // Saluran yang ditanda bermasalah (untuk highlight kuning)
+        $bermasalah = SaluranBermasalah::whereIn('saluran_id', $assignments->pluck('saluran_id')->filter())
+            ->get()
+            ->keyBy('saluran_id');
+
         // Tapis ikut status selepas kehadiran diketahui
         if (in_array($request->input('status'), ['hadir', 'belum'], true)) {
             $mahuHadir = $request->input('status') === 'hadir';
@@ -64,6 +70,7 @@ class DashboardController extends Controller
         return view('dashboard', [
             'assignments' => $assignments,
             'kehadiran' => $kehadiran,
+            'bermasalah' => $bermasalah,
             'senaraiPusat' => $senaraiPusat,
             'senaraiDun' => $senaraiDun,
             'dunId' => $dunId,
diff --git a/app/Http/Controllers/SaluranBermasalahController.php b/app/Http/Controllers/SaluranBermasalahController.php
new file mode 100644
index 0000000..6288202
--- /dev/null
+++ b/app/Http/Controllers/SaluranBermasalahController.php
@@ -0,0 +1,123 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\SaluranBermasalah;
+use App\Models\Sppm\Dun;
+use App\Models\Sppm\PetugasAssignment;
+use App\Models\Sppm\PusatMengundi;
+use App\Models\Sppm\Saluran;
+use Illuminate\Http\Request;
+
+class SaluranBermasalahController extends Controller
+{
+    /**
+     * Senarai semua saluran dalam DUN berserta status bermasalah.
+     * Admin boleh tanda / buang tanda saluran bermasalah dari sini.
+     */
+    public function index(Request $request)
+    {
+        $user = $request->user();
+        $dunId = $user->isSuperadmin()
+            ? ($request->filled('dun_id') ? $request->integer('dun_id') : null)
+            : (int) $user->dun_id;
+
+        $senaraiDun = $user->isSuperadmin()
+            ? Dun::where('is_active', true)->orderBy('code')->get()
+            : collect();
+
+        $senaraiSaluran = Saluran::whereHas('pusatMengundi', function ($q) use ($dunId) {
+                if ($dunId) {
+                    $q->where('dun_id', $dunId);
+                }
+            })
+            ->when($request->filled('pusat_id'), fn ($q) => $q->where('pusat_mengundi_id', $request->integer('pusat_id')))
+            ->with('pusatMengundi')
+            ->get()
+            ->sortBy([
+                fn ($a, $b) => strcmp($a->pusatMengundi?->nama ?? '', $b->pusatMengundi?->nama ?? ''),
+                fn ($a, $b) => ($a->nombor_saluran ?? 0) <=> ($b->nombor_saluran ?? 0),
+            ])
+            ->values();
+
+        // KTM bagi setiap saluran (untuk paparan nama & telefon)
+        $ktm = PetugasAssignment::ktm()
+            ->whereIn('saluran_id', $senaraiSaluran->pluck('id'))
+            ->with('permohonan')
+            ->get()
+            ->keyBy('saluran_id');
+
+        $bermasalah = SaluranBermasalah::whereIn('saluran_id', $senaraiSaluran->pluck('id'))
+            ->with('dilaporOleh')
+            ->get()
+            ->keyBy('saluran_id');
+
+        $senaraiPusat = PusatMengundi::when($dunId, fn ($q) => $q->where('dun_id', $dunId))
+            ->orderBy('nama')
+            ->get(['id', 'nama']);
+
+        return view('saluran.index', [
+            'senaraiSaluran' => $senaraiSaluran,
+            'ktm' => $ktm,
+            'bermasalah' => $bermasalah,
+            'senaraiPusat' => $senaraiPusat,
+            'senaraiDun' => $senaraiDun,
+            'dunId' => $dunId,
+        ]);
+    }
+
+    /**
+     * Tanda saluran sebagai bermasalah (dengan catatan pilihan).
+     */
+    public function store(Request $request)
+    {
+        $data = $request->validate([
+            'saluran_id' => ['required', 'integer'],
+            'catatan' => ['nullable', 'string', 'max:500'],
+        ]);
+
+        $saluran = Saluran::with('pusatMengundi')->findOrFail($data['saluran_id']);
+        $this->pastikanDunDibenarkan($request, $saluran);
+
+        SaluranBermasalah::updateOrCreate(
+            ['saluran_id' => $saluran->id],
+            [
+                'pusat_mengundi_id' => $saluran->pusat_mengundi_id,
+                'dun_id' => $saluran->pusatMengundi->dun_id,
+                'catatan' => $data['catatan'] ?? null,
+                'dilapor_oleh_user_id' => $request->user()->id,
+            ],
+        );
+
+        return back()->with('status', 'Saluran '.$saluran->nombor_saluran.' ('.$saluran->pusatMengundi->nama.') ditanda BERMASALAH.');
+    }
+
+    /**
+     * Buang tanda bermasalah pada saluran.
+     */
+    public function destroy(Request $request, int $saluranId)
+    {
+        $saluran = Saluran::with('pusatMengundi')->findOrFail($saluranId);
+        $this->pastikanDunDibenarkan($request, $saluran);
+
+        SaluranBermasalah::where('saluran_id', $saluran->id)->delete();
+
+        return back()->with('status', 'Tanda bermasalah pada Saluran '.$saluran->nombor_saluran.' ('.$saluran->pusatMengundi->nama.') telah dibuang.');
+    }
+
+    /**
+     * Admin DUN hanya boleh urus saluran dalam DUN sendiri.
+     */
+    private function pastikanDunDibenarkan(Request $request, Saluran $saluran): void
+    {
+        $user = $request->user();
+
+        if ($user->isSuperadmin()) {
+            return;
+        }
+
+        if ((int) $saluran->pusatMengundi?->dun_id !== (int) $user->dun_id) {
+            abort(403, 'Saluran ini bukan dalam DUN anda.');
+        }
+    }
+}
diff --git a/app/Models/SaluranBermasalah.php b/app/Models/SaluranBermasalah.php
new file mode 100644
index 0000000..6e1bd3d
--- /dev/null
+++ b/app/Models/SaluranBermasalah.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\Sppm\PusatMengundi;
+use App\Models\Sppm\Saluran;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class SaluranBermasalah extends Model
+{
+    protected $table = 'saluran_bermasalah';
+
+    protected $fillable = [
+        'saluran_id',
+        'pusat_mengundi_id',
+        'dun_id',
+        'catatan',
+        'dilapor_oleh_user_id',
+    ];
+
+    public function saluran(): BelongsTo
+    {
+        return $this->belongsTo(Saluran::class, 'saluran_id');
+    }
+
+    public function pusatMengundi(): BelongsTo
+    {
+        return $this->belongsTo(PusatMengundi::class, 'pusat_mengundi_id');
+    }
+
+    public function dilaporOleh(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'dilapor_oleh_user_id');
+    }
+}
diff --git a/app/Models/Sppm/PetugasPermohonan.php b/app/Models/Sppm/PetugasPermohonan.php
index 3dfd246..72427ee 100644
--- a/app/Models/Sppm/PetugasPermohonan.php
+++ b/app/Models/Sppm/PetugasPermohonan.php
@@ -30,6 +30,36 @@ class PetugasPermohonan extends Model
         return $this->belongsTo(Dun::class, 'dun_id');
     }
 
+    /**
+     * No. telefon dalam digit sahaja (untuk pautan tel:).
+     */
+    public function telefonDigits(): ?string
+    {
+        $digit = preg_replace('/\D/', '', (string) $this->no_telefon);
+
+        return $digit !== '' ? $digit : null;
+    }
+
+    /**
+     * Pautan WhatsApp (wa.me) — normalkan ke format antarabangsa Malaysia.
+     */
+    public function whatsappUrl(): ?string
+    {
+        $digit = $this->telefonDigits();
+
+        if ($digit === null) {
+            return null;
+        }
+
+        if (str_starts_with($digit, '0')) {
+            $digit = '6'.$digit;
+        } elseif (! str_starts_with($digit, '60')) {
+            $digit = '60'.$digit;
+        }
+
+        return 'https://wa.me/'.$digit;
+    }
+
     public function assignments(): HasMany
     {
         return $this->hasMany(PetugasAssignment::class, 'permohonan_id');
diff --git a/app/Models/Sppm/Saluran.php b/app/Models/Sppm/Saluran.php
index 3d0b3ca..4616827 100644
--- a/app/Models/Sppm/Saluran.php
+++ b/app/Models/Sppm/Saluran.php
@@ -3,10 +3,22 @@
 namespace App\Models\Sppm;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class Saluran extends Model
 {
     protected $connection = 'sppm';
     protected $table = 'saluran';
     protected $guarded = [];
+
+    public function pusatMengundi(): BelongsTo
+    {
+        return $this->belongsTo(PusatMengundi::class, 'pusat_mengundi_id');
+    }
+
+    public function assignments(): HasMany
+    {
+        return $this->hasMany(PetugasAssignment::class, 'saluran_id');
+    }
 }
diff --git a/database/migrations/2026_07_11_000003_create_saluran_bermasalah_table.php b/database/migrations/2026_07_11_000003_create_saluran_bermasalah_table.php
new file mode 100644
index 0000000..abd8685
--- /dev/null
+++ b/database/migrations/2026_07_11_000003_create_saluran_bermasalah_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Saluran yang ditanda bermasalah oleh admin DUN. Satu rekod = satu
+     * saluran (sppm.saluran) yang sedang bermasalah.
+     */
+    public function up(): void
+    {
+        Schema::create('saluran_bermasalah', function (Blueprint $table) {
+            $table->id();
+            // Rujukan ke pangkalan data sppm (tiada FK sebenar merentas DB)
+            $table->unsignedBigInteger('saluran_id')->unique();
+            $table->unsignedBigInteger('pusat_mengundi_id')->index();
+            $table->unsignedBigInteger('dun_id')->index();
+            $table->string('catatan', 500)->nullable();
+            $table->foreignId('dilapor_oleh_user_id')->constrained('users');
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('saluran_bermasalah');
+    }
+};
diff --git a/public/css/app.css b/public/css/app.css
index fa90a64..45c71c1 100644
--- a/public/css/app.css
+++ b/public/css/app.css
@@ -192,6 +192,12 @@ table.jadual thead th {
 
 table.jadual tbody tr:nth-child(even) { background: #f8f9fb; }
 
+/* Saluran ditanda bermasalah: serlahkan kuning */
+table.jadual tbody tr.baris-bermasalah,
+table.jadual tbody tr.baris-bermasalah:nth-child(even) {
+    background: #fff3cd;
+}
+
 .lencana {
     display: inline-block;
     padding: 0.15rem 0.6rem;
@@ -358,6 +364,10 @@ table.jadual tbody tr:nth-child(even) { background: #f8f9fb; }
         padding: 0.3rem 0.6rem;
         background: #fff !important;
     }
+    .jadual-responsif tbody tr.baris-bermasalah {
+        background: #fff3cd !important;
+        border-color: var(--kuning);
+    }
     .jadual-responsif tbody td {
         display: flex;
         justify-content: space-between;
diff --git a/resources/views/dashboard.blade.php b/resources/views/dashboard.blade.php
index 2f91a2a..26a5522 100644
--- a/resources/views/dashboard.blade.php
+++ b/resources/views/dashboard.blade.php
@@ -96,14 +96,31 @@
                         @php
                             $rekod = $kehadiran->get($a->id);
                             $p = $a->permohonan;
+                            $flag = $a->saluran_id ? $bermasalah->get($a->saluran_id) : null;
                         @endphp
-                        <tr class="baris-data">
+                        <tr class="baris-data {{ $flag ? 'baris-bermasalah' : '' }}">
                             <td data-label="Bil">{{ $i + 1 }}</td>
                             <td data-label="Pusat Mengundi">{{ $a->pusatMengundi?->nama ?? '-' }}</td>
-                            <td data-label="Saluran">{{ $a->saluran ? 'Saluran ' . $a->saluran->nombor_saluran : '-' }}</td>
+                            <td data-label="Saluran">
+                                {{ $a->saluran ? 'Saluran ' . $a->saluran->nombor_saluran : '-' }}
+                                @if ($flag)
+                                    <div><span class="lencana lencana-kuning" @if($flag->catatan) title="{{ $flag->catatan }}" @endif>BERMASALAH</span></div>
+                                    @if ($flag->catatan)
+                                        <div class="teks-kecil">{{ $flag->catatan }}</div>
+                                    @endif
+                                @endif
+                            </td>
                             <td data-label="Nama"><strong>{{ $p?->nama_ic ?? '-' }}</strong></td>
                             <td data-label="No. KP">{{ $p?->no_kp ?? '-' }}</td>
-                            <td data-label="No. Telefon">{{ $p?->no_telefon ?? '-' }}</td>
+                            <td data-label="No. Telefon">
+                                {{ $p?->no_telefon ?? '-' }}
+                                @if ($p?->telefonDigits())
+                                    <div class="baris-tindakan" style="margin-top:0.25rem">
+                                        <a href="tel:{{ $p->telefonDigits() }}" class="btn btn-kecil btn-luar">📞 Call</a>
+                                        <a href="{{ $p->whatsappUrl() }}" target="_blank" rel="noopener" class="btn btn-kecil btn-hijau">WhatsApp</a>
+                                    </div>
+                                @endif
+                            </td>
                             <td data-label="Jawatan">{{ $a->jawatan?->nama ?? '-' }}</td>
                             <td data-label="Status">
                                 @if ($rekod)
diff --git a/resources/views/layouts/app.blade.php b/resources/views/layouts/app.blade.php
index 80c227d..b786274 100644
--- a/resources/views/layouts/app.blade.php
+++ b/resources/views/layouts/app.blade.php
@@ -22,6 +22,7 @@
             @endphp
             <div class="pengguna">
                 <a href="{{ route('dashboard') }}">Dashboard</a>
+                <a href="{{ route('saluran.index') }}">Saluran Bermasalah</a>
                 @if (auth()->user()->isSuperadmin())
                     <a href="{{ route('pengguna.index') }}">Pengguna</a>
                 @endif
diff --git a/resources/views/saluran/index.blade.php b/resources/views/saluran/index.blade.php
new file mode 100644
index 0000000..ac138d0
--- /dev/null
+++ b/resources/views/saluran/index.blade.php
@@ -0,0 +1,124 @@
+@extends('layouts.app')
+
+@section('tajuk', 'Saluran Bermasalah')
+
+@section('kandungan')
+    <div class="kad">
+        <div style="display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:0.5rem;">
+            <h1 class="mb-0">Saluran Bermasalah</h1>
+            <span class="lencana lencana-kuning">{{ $bermasalah->count() }} saluran bermasalah</span>
+        </div>
+        <p class="teks-kecil mb-0">Tanda saluran yang bermasalah supaya diserlahkan kuning dalam dashboard kehadiran.</p>
+    </div>
+
+    @if ($errors->any())
+        <div class="makluman makluman-ralat">{{ $errors->first() }}</div>
+    @endif
+
+    <div class="kad">
+        <form method="GET" action="{{ route('saluran.index') }}">
+            <div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:0 0.75rem;">
+                @if (auth()->user()->isSuperadmin())
+                    <div>
+                        <label for="dun_id">DUN</label>
+                        <select id="dun_id" name="dun_id" onchange="this.form.submit()">
+                            <option value="">— Semua DUN —</option>
+                            @foreach ($senaraiDun as $dun)
+                                <option value="{{ $dun->id }}" @selected($dunId == $dun->id)>
+                                    {{ $dun->code }} — {{ $dun->nama }}
+                                </option>
+                            @endforeach
+                        </select>
+                    </div>
+                @endif
+
+                <div>
+                    <label for="pusat_id">Pusat Mengundi</label>
+                    <select id="pusat_id" name="pusat_id" onchange="this.form.submit()">
+                        <option value="">— Semua Pusat —</option>
+                        @foreach ($senaraiPusat as $pusat)
+                            <option value="{{ $pusat->id }}" @selected(request('pusat_id') == $pusat->id)>
+                                {{ $pusat->nama }}
+                            </option>
+                        @endforeach
+                    </select>
+                </div>
+            </div>
+        </form>
+    </div>
+
+    <div class="kad" style="padding:0;">
+        <div class="jadual-bekas">
+            <table class="jadual jadual-responsif">
+                <thead>
+                    <tr>
+                        <th>Bil</th>
+                        <th>Pusat Mengundi</th>
+                        <th>Saluran</th>
+                        <th>KTM</th>
+                        <th>Status</th>
+                        <th>Catatan</th>
+                        <th>Tindakan</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    @forelse ($senaraiSaluran as $i => $s)
+                        @php
+                            $flag = $bermasalah->get($s->id);
+                            $p = $ktm->get($s->id)?->permohonan;
+                        @endphp
+                        <tr class="baris-data {{ $flag ? 'baris-bermasalah' : '' }}">
+                            <td data-label="Bil">{{ $i + 1 }}</td>
+                            <td data-label="Pusat Mengundi">{{ $s->pusatMengundi?->nama ?? '-' }}</td>
+                            <td data-label="Saluran"><strong>Saluran {{ $s->nombor_saluran }}</strong></td>
+                            <td data-label="KTM">
+                                {{ $p?->nama_ic ?? '-' }}
+                                @if ($p?->telefonDigits())
+                                    <div class="baris-tindakan" style="margin-top:0.25rem">
+                                        <a href="tel:{{ $p->telefonDigits() }}" class="btn btn-kecil btn-luar">📞 Call</a>
+                                        <a href="{{ $p->whatsappUrl() }}" target="_blank" rel="noopener" class="btn btn-kecil btn-hijau">WhatsApp</a>
+                                    </div>
+                                @endif
+                            </td>
+                            <td data-label="Status">
+                                @if ($flag)
+                                    <span class="lencana lencana-kuning">BERMASALAH</span>
+                                    <div class="teks-kecil">{{ $flag->created_at->format('d/m/Y h:i A') }}<br>oleh {{ $flag->dilaporOleh?->name }}</div>
+                                @else
+                                    <span class="lencana lencana-hijau">OK</span>
+                                @endif
+                            </td>
+                            <td data-label="Catatan">{{ $flag?->catatan ?? '-' }}</td>
+                            <td data-label="Tindakan">
+                                @if ($flag)
+                                    <form method="POST" action="{{ route('saluran.destroy', $s->id) }}" style="margin:0"
+                                          onsubmit="return confirm('Buang tanda bermasalah pada Saluran {{ $s->nombor_saluran }} ({{ $s->pusatMengundi?->nama }})?');">
+                                        @csrf
+                                        @method('DELETE')
+                                        <button type="submit" class="btn btn-kecil btn-luar">Buang Tanda</button>
+                                    </form>
+                                @else
+                                    <form method="POST" action="{{ route('saluran.store') }}" style="margin:0; display:flex; gap:0.4rem; flex-wrap:wrap;">
+                                        @csrf
+                                        <input type="hidden" name="saluran_id" value="{{ $s->id }}">
+                                        <input type="text" name="catatan" placeholder="Catatan (pilihan)" maxlength="500"
+                                               style="margin:0; padding:0.35rem 0.6rem; font-size:0.85rem; width:auto; flex:1 1 140px;">
+                                        <button type="submit" class="btn btn-kecil" style="background: var(--kuning);">Tanda Bermasalah</button>
+                                    </form>
+                                @endif
+                            </td>
+                        </tr>
+                    @empty
+                        <tr class="baris-tiada">
+                            <td colspan="7" class="teks-tengah">Tiada saluran dijumpai.</td>
+                        </tr>
+                    @endforelse
+                </tbody>
+            </table>
+        </div>
+
+        <div class="jadual-kaki">
+            <span class="teks-kecil">{{ $senaraiSaluran->count() }} saluran dipaparkan</span>
+        </div>
+    </div>
+@endsection
diff --git a/routes/web.php b/routes/web.php
index cd14bf9..1f17406 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -7,6 +7,7 @@ use App\Http\Controllers\KehadiranController;
 use App\Http\Controllers\PasswordResetController;
 use App\Http\Controllers\PenggunaController;
 use App\Http\Controllers\ProfilController;
+use App\Http\Controllers\SaluranBermasalahController;
 use Illuminate\Support\Facades\Route;
 
 Route::redirect('/', '/login');
@@ -37,6 +38,11 @@ Route::middleware(['auth'])->group(function () {
 
         // Muat turun senarai kehadiran (Excel)
         Route::get('/eksport-kehadiran', EksportKehadiranController::class)->name('kehadiran.eksport');
+
+        // Flag saluran bermasalah
+        Route::get('/saluran-bermasalah', [SaluranBermasalahController::class, 'index'])->name('saluran.index');
+        Route::post('/saluran-bermasalah', [SaluranBermasalahController::class, 'store'])->name('saluran.store');
+        Route::delete('/saluran-bermasalah/{saluran}', [SaluranBermasalahController::class, 'destroy'])->name('saluran.destroy');
     });
 
     Route::middleware(['role:superadmin'])->group(function () {