diff --git a/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/config/FineractProperties.java b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/config/FineractProperties.java
index 20b76bdc691..9ad8b648bb0 100644
--- a/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/config/FineractProperties.java
+++ b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/config/FineractProperties.java
@@ -88,6 +88,7 @@ public class FineractProperties {
 
     private FineractSqlValidationProperties sqlValidation;
     private FineractInputValidationProperties inputValidation;
+    private FineractPhoneValidationProperties phoneValidation;
 
     private FineractCache cache;
 
@@ -733,6 +734,13 @@ public static class FineractInputValidationPatternProperties {
         private String pattern;
     }
 
+    @Getter
+    @Setter
+    public static class FineractPhoneValidationProperties {
+
+        private String regex = "^\\+?[0-9]{7,15}$";
+    }
+
     @Getter
     @Setter
     public static class FineractCache {
@@ -793,4 +801,10 @@ public static class FineractDefaultValues {
 
         private Long officeId;
     }
+
+    @Getter
+    @Setter
+    public static class FineractPhoneValidationProperties {
+        private String regex = "^\\+?[0-9]{7,15}$";
+    }
 }
diff --git a/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/service/PhoneNumberValidationService.java b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/service/PhoneNumberValidationService.java
new file mode 100644
index 00000000000..deb58263f2a
--- /dev/null
+++ b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/service/PhoneNumberValidationService.java
@@ -0,0 +1,25 @@
+package org.apache.fineract.infrastructure.core.service;
+
+import java.util.regex.Pattern;
+import lombok.RequiredArgsConstructor;
+import org.apache.fineract.infrastructure.core.config.FineractProperties;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class PhoneNumberValidationService {
+
+    private final FineractProperties fineractProperties;
+
+    public boolean isValid(String phoneNumber) {
+        if (phoneNumber == null || phoneNumber.isEmpty()) {
+            return true;
+        }
+        String regex = fineractProperties.getPhoneValidation().getRegex();
+        return Pattern.compile(regex).matcher(phoneNumber).matches();
+    }
+
+    public String getRegex() {
+        return fineractProperties.getPhoneValidation().getRegex();
+    }
+}
diff --git a/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/validator/PhoneNumberValidator.java b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/validator/PhoneNumberValidator.java
new file mode 100644
index 00000000000..48d0edfc93a
--- /dev/null
+++ b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/validator/PhoneNumberValidator.java
@@ -0,0 +1,19 @@
+package org.apache.fineract.infrastructure.core.validator;
+
+import jakarta.validation.ConstraintValidator;
+import jakarta.validation.ConstraintValidatorContext;
+import lombok.RequiredArgsConstructor;
+import org.apache.fineract.infrastructure.core.service.PhoneNumberValidationService;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class PhoneNumberValidator implements ConstraintValidator<ValidPhoneNumber, String> {
+
+    private final PhoneNumberValidationService phoneNumberValidationService;
+
+    @Override
+    public boolean isValid(String value, ConstraintValidatorContext context) {
+        return phoneNumberValidationService.isValid(value);
+    }
+}
diff --git a/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/validator/ValidPhoneNumber.java b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/validator/ValidPhoneNumber.java
new file mode 100644
index 00000000000..f631a88007a
--- /dev/null
+++ b/fineract-core/src/main/java/org/apache/fineract/infrastructure/core/validator/ValidPhoneNumber.java
@@ -0,0 +1,23 @@
+package org.apache.fineract.infrastructure.core.validator;
+
+import jakarta.validation.Constraint;
+import jakarta.validation.Payload;
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Documented
+@Constraint(validatedBy = PhoneNumberValidator.class)
+@Target({ ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE, ElementType.CONSTRUCTOR, ElementType.PARAMETER,
+        ElementType.TYPE_USE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ValidPhoneNumber {
+
+    String message() default "Invalid phone number";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+}
diff --git a/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffCreateRequest.java b/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffCreateRequest.java
index ca1264b900f..2a3412c6743 100644
--- a/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffCreateRequest.java
+++ b/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffCreateRequest.java
@@ -20,13 +20,13 @@
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import jakarta.validation.constraints.NotNull;
-import jakarta.validation.constraints.Pattern;
 import java.io.Serial;
 import java.io.Serializable;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import org.apache.fineract.infrastructure.core.validator.ValidPhoneNumber;
 import org.hibernate.validator.constraints.Length;
 
 @Builder
@@ -56,7 +56,7 @@ public class StaffCreateRequest implements Serializable {
     private String emailAddress;
     @Length(max = 50, message = "{org.apache.fineract.organisation.staff.mobile-no.max}")
     // @NotBlank(message = "{org.apache.fineract.organisation.staff.mobile-no.not-blank}")
-    @Pattern(regexp = "^\\+?[0-9]{7,15}$", message = "{org.apache.fineract.organisation.staff.mobile-no.invalid}")
+    @ValidPhoneNumber(message = "{org.apache.fineract.organisation.staff.mobile-no.invalid}")
     private String mobileNo;
     @Builder.Default
     @JsonProperty("isActive")
diff --git a/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffUpdateRequest.java b/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffUpdateRequest.java
index 1817934d01f..87e49d0eb99 100644
--- a/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffUpdateRequest.java
+++ b/fineract-provider/src/main/java/org/apache/fineract/organisation/staff/data/StaffUpdateRequest.java
@@ -20,7 +20,6 @@
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.swagger.v3.oas.annotations.Hidden;
-import jakarta.validation.constraints.Pattern;
 import java.io.Serial;
 import java.io.Serializable;
 import lombok.AllArgsConstructor;
@@ -28,6 +27,7 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import lombok.experimental.FieldNameConstants;
+import org.apache.fineract.infrastructure.core.validator.ValidPhoneNumber;
 import org.apache.fineract.organisation.staff.validation.StaffForceStatus;
 import org.hibernate.validator.constraints.Length;
 
@@ -62,7 +62,7 @@ public class StaffUpdateRequest implements Serializable {
     private String emailAddress;
     @Length(max = 50, message = "{org.apache.fineract.organisation.staff.mobile-no.max}")
     // @NotBlank(message = "{org.apache.fineract.organisation.staff.mobile-no.not-blank}")
-    @Pattern(regexp = "^\\+?[0-9]{7,15}$", message = "{org.apache.fineract.organisation.staff.mobile-no.invalid}")
+    @ValidPhoneNumber(message = "{org.apache.fineract.organisation.staff.mobile-no.invalid}")
     private String mobileNo;
     @JsonProperty("isActive")
     private Boolean isActive;
diff --git a/fineract-provider/src/main/java/org/apache/fineract/portfolio/client/data/ClientDataValidator.java b/fineract-provider/src/main/java/org/apache/fineract/portfolio/client/data/ClientDataValidator.java
index 546c1051bb0..36900520572 100644
--- a/fineract-provider/src/main/java/org/apache/fineract/portfolio/client/data/ClientDataValidator.java
+++ b/fineract-provider/src/main/java/org/apache/fineract/portfolio/client/data/ClientDataValidator.java
@@ -40,6 +40,7 @@
 import org.apache.fineract.infrastructure.core.exception.PlatformApiDataValidationException;
 import org.apache.fineract.infrastructure.core.serialization.FromJsonHelper;
 import org.apache.fineract.infrastructure.core.service.DateUtils;
+import org.apache.fineract.infrastructure.core.service.PhoneNumberValidationService;
 import org.apache.fineract.portfolio.client.api.ClientApiConstants;
 import org.apache.fineract.validation.constraints.DateFormatValidator;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -50,13 +51,15 @@ public final class ClientDataValidator {
 
     private final FromJsonHelper fromApiJsonHelper;
     private final ConfigurationReadPlatformService configurationReadPlatformService;
-    private static final String MOBILE_NUMBER_REGEX = "^\\+?[0-9]{7,15}$";
+    private final PhoneNumberValidationService phoneNumberValidationService;
 
     @Autowired
     public ClientDataValidator(final FromJsonHelper fromApiJsonHelper,
-            final ConfigurationReadPlatformService configurationReadPlatformService) {
+            final ConfigurationReadPlatformService configurationReadPlatformService,
+            final PhoneNumberValidationService phoneNumberValidationService) {
         this.fromApiJsonHelper = fromApiJsonHelper;
         this.configurationReadPlatformService = configurationReadPlatformService;
+        this.phoneNumberValidationService = phoneNumberValidationService;
     }
 
     public void validateForCreate(final String json) {
@@ -165,7 +168,7 @@ public void validateForCreate(final String json) {
         if (this.fromApiJsonHelper.parameterExists(ClientApiConstants.mobileNoParamName, element)) {
             final String mobileNo = this.fromApiJsonHelper.extractStringNamed(ClientApiConstants.mobileNoParamName, element);
             baseDataValidator.reset().parameter(ClientApiConstants.mobileNoParamName).value(mobileNo).ignoreIfNull()
-                    .matchesRegularExpression(MOBILE_NUMBER_REGEX).notExceedingLengthOf(50);
+                    .matchesRegularExpression(phoneNumberValidationService.getRegex()).notExceedingLengthOf(50);
         }
 
         final Boolean active = this.fromApiJsonHelper.extractBooleanNamed(ClientApiConstants.activeParamName, element);
@@ -451,7 +454,7 @@ public void validateForUpdate(final String json) {
             atLeastOneParameterPassedForUpdate = true;
             final String mobileNo = this.fromApiJsonHelper.extractStringNamed(ClientApiConstants.mobileNoParamName, element);
             baseDataValidator.reset().parameter(ClientApiConstants.mobileNoParamName).value(mobileNo).ignoreIfNull()
-                    .matchesRegularExpression(MOBILE_NUMBER_REGEX).notExceedingLengthOf(50);
+                    .matchesRegularExpression(phoneNumberValidationService.getRegex()).notExceedingLengthOf(50);
         }
 
         final Boolean active = this.fromApiJsonHelper.extractBooleanNamed(ClientApiConstants.activeParamName, element);
diff --git a/fineract-provider/src/test/java/org/apache/fineract/portfolio/client/data/ClientDataValidatorTest.java b/fineract-provider/src/test/java/org/apache/fineract/portfolio/client/data/ClientDataValidatorTest.java
index bcaf9e4f403..b6074111a18 100644
--- a/fineract-provider/src/test/java/org/apache/fineract/portfolio/client/data/ClientDataValidatorTest.java
+++ b/fineract-provider/src/test/java/org/apache/fineract/portfolio/client/data/ClientDataValidatorTest.java
@@ -28,6 +28,7 @@
 import org.apache.fineract.infrastructure.configuration.service.ConfigurationReadPlatformService;
 import org.apache.fineract.infrastructure.core.exception.PlatformApiDataValidationException;
 import org.apache.fineract.infrastructure.core.serialization.FromJsonHelper;
+import org.apache.fineract.infrastructure.core.service.PhoneNumberValidationService;
 import org.apache.fineract.portfolio.client.api.ClientApiConstants;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -44,6 +45,9 @@ class ClientDataValidatorTest {
     @Mock
     private ConfigurationReadPlatformService configurationReadPlatformService;
 
+    @Mock
+    private PhoneNumberValidationService phoneNumberValidationService;
+
     private ClientDataValidator validator;
 
     @BeforeEach
@@ -51,7 +55,8 @@ void setUp() {
         FromJsonHelper fromApiJsonHelper = new FromJsonHelper();
         when(configurationReadPlatformService.retrieveGlobalConfiguration(anyString()))
                 .thenReturn(new GlobalConfigurationPropertyData().setEnabled(false));
-        validator = new ClientDataValidator(fromApiJsonHelper, configurationReadPlatformService);
+        when(phoneNumberValidationService.getRegex()).thenReturn("^\\+?[0-9]{7,15}$");
+        validator = new ClientDataValidator(fromApiJsonHelper, configurationReadPlatformService, phoneNumberValidationService);
     }
 
     private static String validMinimalCreateJson(String dateFormat) {