diff --git a/src/app/projects/page.js b/src/app/projects/page.js
index 57138cf..b03e8f4 100644
--- a/src/app/projects/page.js
+++ b/src/app/projects/page.js
@@ -20,15 +20,28 @@ export default function ProjectListPage() {
 	const [projects, setProjects] = useState([]);
 	const [searchTerm, setSearchTerm] = useState("");
 	const [filteredProjects, setFilteredProjects] = useState([]);
-	const [filters, setFilters] = useState({
-		status: 'all',
-		type: 'all', 
-		customer: 'all',
-		mine: false
+	const [filters, setFilters] = useState(() => {
+		// Load phoneOnly filter from localStorage
+		const savedPhoneOnly = typeof window !== 'undefined' 
+			? localStorage.getItem('projectsPhoneOnlyFilter') === 'true'
+			: false;
+		return {
+			status: 'all',
+			type: 'all', 
+			customer: 'all',
+			mine: false,
+			phoneOnly: savedPhoneOnly
+		};
 	});
 
 	const [customers, setCustomers] = useState([]);
 	const [filtersExpanded, setFiltersExpanded] = useState(true); // Start expanded on mobile so users know filters exist
+	const [searchMatchType, setSearchMatchType] = useState(null); // Track what type of match was found
+	
+	// Helper function to normalize strings by removing spaces
+	const normalizeString = (str) => {
+		return str?.replace(/\s+/g, '') || '';
+	};
 	
 	useEffect(() => {
 		fetch("/api/projects")
@@ -74,17 +87,37 @@ export default function ProjectListPage() {
 		// Apply search term
 		if (searchTerm.trim()) {
 			const searchLower = searchTerm.toLowerCase();
-			filtered = filtered.filter((project) => {
-				return (
+			const searchNormalized = normalizeString(searchLower);
+			let hasContactMatch = false;
+			
+			filtered = filtered.map((project) => {
+				const isContactMatch = normalizeString(project.contact?.toLowerCase()).includes(searchNormalized);
+				if (isContactMatch) hasContactMatch = true;
+				
+				// Add a flag to mark projects that matched on contact
+				return {
+					...project,
+					_matchedOnContact: isContactMatch
+				};
+			}).filter((project) => {
+				const baseMatches = 
 					project.project_name?.toLowerCase().includes(searchLower) ||
 					project.wp?.toLowerCase().includes(searchLower) ||
 					project.plot?.toLowerCase().includes(searchLower) ||
 					project.investment_number?.toLowerCase().includes(searchLower) ||
 					project.address?.toLowerCase().includes(searchLower) ||
 					project.customer?.toLowerCase().includes(searchLower) ||
-					project.investor?.toLowerCase().includes(searchLower)
-				);
+					project.investor?.toLowerCase().includes(searchLower);
+				
+				// Include contact matches only if phoneOnly is enabled
+				const contactMatch = filters.phoneOnly ? project._matchedOnContact : false;
+				
+				return baseMatches || contactMatch;
 			});
+			
+			setSearchMatchType(hasContactMatch ? 'contact' : null);
+		} else {
+			setSearchMatchType(null);
 		}
 
 		setFilteredProjects(filtered);
@@ -107,10 +140,19 @@ export default function ProjectListPage() {
 	};
 
 	const handleFilterChange = (filterType, value) => {
-		setFilters(prev => ({
-			...prev,
-			[filterType]: value
-		}));
+		setFilters(prev => {
+			const newFilters = {
+				...prev,
+				[filterType]: value
+			};
+			
+			// Save phoneOnly filter to localStorage
+			if (filterType === 'phoneOnly') {
+				localStorage.setItem('projectsPhoneOnlyFilter', value.toString());
+			}
+			
+			return newFilters;
+		});
 	};
 
 	const clearAllFilters = () => {
@@ -118,8 +160,10 @@ export default function ProjectListPage() {
 			status: 'all',
 			type: 'all',
 			customer: 'all',
-			mine: false
+			mine: false,
+			phoneOnly: false
 		});
+		localStorage.setItem('projectsPhoneOnlyFilter', 'false');
 		setSearchTerm('');
 	};
 
@@ -149,7 +193,7 @@ export default function ProjectListPage() {
 		setFiltersExpanded(!filtersExpanded);
 	};
 
-	const hasActiveFilters = filters.status !== 'all' || filters.type !== 'all' || filters.customer !== 'all' || filters.mine || searchTerm.trim() !== '';
+	const hasActiveFilters = filters.status !== 'all' || filters.type !== 'all' || filters.customer !== 'all' || filters.mine || filters.phoneOnly || searchTerm.trim() !== '';
 
 	const getActiveFilterCount = () => {
 		let count = 0;
@@ -157,6 +201,7 @@ export default function ProjectListPage() {
 		if (filters.type !== 'all') count++;
 		if (filters.customer !== 'all') count++;
 		if (filters.mine) count++;
+		if (filters.phoneOnly) count++;
 		if (searchTerm.trim()) count++;
 		return count;
 	};
@@ -366,16 +411,17 @@ export default function ProjectListPage() {
 								</select>
 							</div>
 
-							{session?.user && (
+							<div className="flex items-center gap-2">
 								<button
-									onClick={() => handleFilterChange('mine', !filters.mine)}
+									onClick={() => handleFilterChange('phoneOnly', !filters.phoneOnly)}
 									className={`
-										inline-flex items-center space-x-2 px-3 py-1.5 rounded-full text-sm font-medium transition-all
-										${filters.mine 
+										inline-flex items-center justify-center w-9 h-9 rounded-full text-sm font-medium transition-all
+										${filters.phoneOnly 
 											? 'bg-blue-100 text-blue-700 border-2 border-blue-300 dark:bg-blue-900/30 dark:text-blue-300 dark:border-blue-700' 
 											: 'bg-gray-100 text-gray-700 border-2 border-gray-200 hover:border-gray-300 dark:bg-gray-800 dark:text-gray-300 dark:border-gray-700 dark:hover:border-gray-600'
 										}
 									`}
+								title={filters.phoneOnly ? (t('projects.phoneSearchEnabled') || 'Wyszukiwanie po numerze włączone') : (t('projects.phoneSearchDisabled') || 'Wyszukiwanie po numerze wyłączone')}
 								>
 									<svg
 										className="w-4 h-4"
@@ -387,12 +433,39 @@ export default function ProjectListPage() {
 											strokeLinecap="round"
 											strokeLinejoin="round"
 											strokeWidth={2}
-											d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z"
+											d="M3 5a2 2 0 012-2h3.28a1 1 0 01.948.684l1.498 4.493a1 1 0 01-.502 1.21l-2.257 1.13a11.042 11.042 0 005.516 5.516l1.13-2.257a1 1 0 011.21-.502l4.493 1.498a1 1 0 01.684.949V19a2 2 0 01-2 2h-1C9.716 21 3 14.284 3 6V5z"
 										/>
 									</svg>
-									<span>{t('projects.mine') || 'Tylko moje'}</span>
 								</button>
-							)}
+
+								{session?.user && (
+									<button
+										onClick={() => handleFilterChange('mine', !filters.mine)}
+										className={`
+											inline-flex items-center space-x-2 px-3 py-1.5 rounded-full text-sm font-medium transition-all
+											${filters.mine 
+												? 'bg-blue-100 text-blue-700 border-2 border-blue-300 dark:bg-blue-900/30 dark:text-blue-300 dark:border-blue-700' 
+												: 'bg-gray-100 text-gray-700 border-2 border-gray-200 hover:border-gray-300 dark:bg-gray-800 dark:text-gray-300 dark:border-gray-700 dark:hover:border-gray-600'
+											}
+										`}
+									>
+										<svg
+											className="w-4 h-4"
+											fill="none"
+											stroke="currentColor"
+											viewBox="0 0 24 24"
+										>
+											<path
+												strokeLinecap="round"
+												strokeLinejoin="round"
+												strokeWidth={2}
+												d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z"
+											/>
+										</svg>
+										<span>{t('projects.mine') || 'Tylko moje'}</span>
+									</button>
+								)}
+							</div>
 						</div>
 					</div>
 				</div>
@@ -455,6 +528,32 @@ export default function ProjectListPage() {
 									</select>
 								</div>
 
+								<button
+									onClick={() => handleFilterChange('phoneOnly', !filters.phoneOnly)}
+									className={`
+										inline-flex items-center justify-center w-9 h-9 rounded-full text-sm font-medium transition-all
+									${filters.phoneOnly 
+										? 'bg-blue-100 text-blue-700 border-2 border-blue-300 dark:bg-blue-900/30 dark:text-blue-300 dark:border-blue-700' 
+										: 'bg-gray-100 text-gray-700 border-2 border-gray-200 hover:border-gray-300 dark:bg-gray-800 dark:text-gray-300 dark:border-gray-700 dark:hover:border-gray-600'
+									}
+								`}
+								title={filters.phoneOnly ? (t('projects.phoneSearchEnabled') || 'Wyszukiwanie po numerze włączone') : (t('projects.phoneSearchDisabled') || 'Wyszukiwanie po numerze wyłączone')}
+							>
+								<svg
+									className="w-4 h-4"
+										fill="none"
+										stroke="currentColor"
+										viewBox="0 0 24 24"
+									>
+										<path
+											strokeLinecap="round"
+											strokeLinejoin="round"
+											strokeWidth={2}
+											d="M3 5a2 2 0 012-2h3.28a1 1 0 01.948.684l1.498 4.493a1 1 0 01-.502 1.21l-2.257 1.13a11.042 11.042 0 005.516 5.516l1.13-2.257a1 1 0 011.21-.502l4.493 1.498a1 1 0 01.684.949V19a2 2 0 01-2 2h-1C9.716 21 3 14.284 3 6V5z"
+										/>
+									</svg>
+								</button>
+
 								{session?.user && (
 									<button
 										onClick={() => handleFilterChange('mine', !filters.mine)}
@@ -490,7 +589,7 @@ export default function ProjectListPage() {
 									{t('projects.showingResults', { shown: filteredProjects.length, total: projects.length }) || `Wyświetlono ${filteredProjects.length} z ${projects.length} projektów`}
 								</div>
 								
-								{(filters.status !== 'all' || filters.type !== 'all' || filters.customer !== 'all' || filters.mine || searchTerm) && (
+								{(filters.status !== 'all' || filters.type !== 'all' || filters.customer !== 'all' || filters.mine || filters.phoneOnly || searchTerm) && (
 									<Button 
 										variant="ghost" 
 										size="sm" 
@@ -615,16 +714,28 @@ export default function ProjectListPage() {
 							{filteredProjects.map((project, index) => (
 								<tr
 									key={project.project_id}
-									className={`border-b dark:border-gray-600 hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors ${
-										index % 2 === 0 ? "bg-white dark:bg-gray-800" : "bg-gray-25 dark:bg-gray-750"
-									}`}
+								className={`border-b dark:border-gray-600 hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors ${
+									index % 2 === 0 ? "bg-white dark:bg-gray-800" : "bg-gray-25 dark:bg-gray-750"
+								} ${project._matchedOnContact && filters.phoneOnly ? 'border-l-4 border-l-blue-500' : ''}`}
 								>
 									<td className="px-1 py-3">
+									<div className="flex items-center gap-1">
 										<Badge variant="secondary" size="sm" className="text-xs">
 											{project.project_number}
 										</Badge>
-									</td>
-									<td className="px-2 py-3 w-[200px] md:w-[250px]">
+										{project._matchedOnContact && filters.phoneOnly && (
+											<span 
+												className="inline-flex items-center justify-center w-5 h-5 bg-blue-100 dark:bg-blue-900/40 text-blue-700 dark:text-blue-300 rounded-full" 
+												title={t('projects.contactNumberMatch') || 'Znaleziono numer kontaktowy'}
+											>
+												<svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+													<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 5a2 2 0 012-2h3.28a1 1 0 01.948.684l1.498 4.493a1 1 0 01-.502 1.21l-2.257 1.13a11.042 11.042 0 005.516 5.516l1.13-2.257a1 1 0 011.21-.502l4.493 1.498a1 1 0 01.684.949V19a2 2 0 01-2 2h-1C9.716 21 3 14.284 3 6V5z" />
+												</svg>
+											</span>
+										)}
+									</div>
+								</td>
+								<td className="px-2 py-3 w-[200px] md:w-[250px]">
 										<Link
 											href={`/projects/${project.project_id}`}
 											className="font-medium text-blue-600 hover:text-blue-800 transition-colors text-sm truncate block"
diff --git a/src/lib/i18n.js b/src/lib/i18n.js
index 0196299..4d431df 100644
--- a/src/lib/i18n.js
+++ b/src/lib/i18n.js
@@ -208,6 +208,9 @@ const translations = {
       investmentNumber: "Numer inwestycji",
       enterInvestmentNumber: "Wprowadź numer inwestycji",
       enterWP: "Wprowadź WP",
+      contactNumberMatch: "Znaleziono numer kontaktowy",
+      phoneSearchEnabled: "Wyszukiwanie po numerze włączone",
+      phoneSearchDisabled: "Wyszukiwanie po numerze wyłączone",
       placeholders: {
         contact: "Wprowadź dane kontaktowe",
         coordinates: "np. 49.622958,20.629562",