diff --git a/ios/Classes/Constants.swift b/ios/Classes/Constants.swift
index 79753fb..37cab1d 100644
--- a/ios/Classes/Constants.swift
+++ b/ios/Classes/Constants.swift
@@ -23,4 +23,23 @@ struct Constants {
     struct Error {
         static let methodNotImplemented = "Method not implemented"
     }
+    
+    struct Arguments {
+        static let firstName = "fname"
+        static let lastName = "lname"
+        static let otp = "otp"
+        static let phone = "ph"
+        static let countryCode = "ci"
+    }
+    
+    struct CountryCode {
+        static let india = "IN"
+    }
+    
+    struct ErrorDescription {
+        static let unableToParseArguments = "Unable to parse arguments"
+        static let phoneNumberEmpty = "Phone number cannot be empty"
+        static let firstNameEmpty = "Firstname should not be empty"
+        static let otpEmpty = "OTP should not be empty"
+    }
 }
diff --git a/ios/Classes/Extensions.swift b/ios/Classes/Extensions.swift
index 7f71cfe..cf00bff 100644
--- a/ios/Classes/Extensions.swift
+++ b/ios/Classes/Extensions.swift
@@ -46,7 +46,7 @@ extension TCTrueProfile {
 extension TCError {
     var toDict: [String: AnyHashable] {
         var dict = [String: AnyHashable]()
-        dict["code"] = getCode()
+        dict["code"] = getCode().rawValue
         dict["message"] = description
         return dict
     }
diff --git a/ios/Classes/SwiftTruecallerSdkPlugin.swift b/ios/Classes/SwiftTruecallerSdkPlugin.swift
index 9879a01..2cc845e 100644
--- a/ios/Classes/SwiftTruecallerSdkPlugin.swift
+++ b/ios/Classes/SwiftTruecallerSdkPlugin.swift
@@ -13,12 +13,17 @@ private enum MethodCalls: String {
     case verifyMissedCall
 }
 
+//Disclaimer should be manually shown while using iOS flutter SDK.
+public class Controller: UIViewController, TCTrueSDKViewDelegate { }
+
 public class SwiftTruecallerSdkPlugin: NSObject,
                                        FlutterPlugin {
     private var mainChannel: FlutterMethodChannel?
     private var eventChannel: FlutterEventChannel?
     private var eventSink: FlutterEventSink?
     
+    private var controller = Controller()
+    
     private var trueSdk = TCTrueSDK.sharedManager()
     
     public static func register(with registrar: FlutterPluginRegistrar) {
@@ -59,21 +64,90 @@ public class SwiftTruecallerSdkPlugin: NSObject,
         switch method {
         case .initiateSDK:
             trueSdk.delegate = self
+            trueSdk.viewDelegate = controller
             result(true)
         case .isUsable:
             result(trueSdk.isSupported())
+        case .requestVerification:
+            requestVerification(call: call,
+                                result: result)
+            result(true)
+        case .verifyOtp:
+            verifyOtpAndName(call: call,
+                             result: result)
         case .setDarkTheme,
                 .setLocale,
-                .requestVerification,
-                .verifyOtp,
                 .verifyMissedCall:
             result(Constants.Error.methodNotImplemented)
+            result(true)
         case .getProfile:
             trueSdk.requestTrueProfile()
+            result(true)
         case .none:
             result(Constants.Error.methodNotImplemented)
         }
     }
+    
+    private func requestVerification(call: FlutterMethodCall,
+                                     result: @escaping FlutterResult) {
+        switch getVerificationArguments(from: call) {
+        case .success(let arguments):
+            trueSdk.requestVerification(forPhone: arguments.phoneNumber,
+                                        countryCode: arguments.isoCountryCode)
+        case .failure(let error):
+            result(error)
+        }
+    }
+    
+    private typealias VerificationArguments = (phoneNumber: String, isoCountryCode: String)
+    
+    private func getVerificationArguments(from call: FlutterMethodCall) -> Result<VerificationArguments, Error> {
+        guard let arguments = call.arguments as? [String: Any] else {
+            return .failure(TCError(code: TCTrueSDKErrorCode.badRequest,
+                                    description: Constants.ErrorDescription.unableToParseArguments))
+        }
+        guard let phone = arguments[Constants.Arguments.phone] as? String else {
+            return .failure(TCError(code: TCTrueSDKErrorCode.badRequest,
+                                    description: Constants.ErrorDescription.phoneNumberEmpty))
+        }
+        
+        let countryCode = arguments[Constants.Arguments.countryCode] as? String
+        ?? Constants.CountryCode.india
+        return .success((phone,countryCode))
+    }
+    
+    private func verifyOtpAndName(call: FlutterMethodCall,
+                                  result: @escaping FlutterResult) {
+        switch getCodeAndNames(from: call) {
+        case .success(let arguments):
+            trueSdk.verifySecurityCode(arguments.code,
+                                       andUpdateFirstname: arguments.firstName,
+                                       lastName: arguments.lastname)
+        case .failure(let error):
+            result(error)
+        }
+    }
+    
+    private typealias CodeAndName = (firstName: String, lastname: String, code: String)
+    
+    private func getCodeAndNames(from call: FlutterMethodCall) -> Result<CodeAndName, Error> {
+        guard let arguments = call.arguments as? [String: Any] else {
+            return .failure(TCError(code: TCTrueSDKErrorCode.badRequest,
+                                    description: Constants.ErrorDescription.unableToParseArguments))
+        }
+        guard let code = arguments[Constants.Arguments.otp] as? String else {
+            return .failure(TCError(code: TCTrueSDKErrorCode.badRequest,
+                                    description: Constants.ErrorDescription.otpEmpty))
+        }
+        
+        guard let firstName = arguments[Constants.Arguments.firstName] as? String else {
+            return .failure(TCError(code: TCTrueSDKErrorCode.badRequest,
+                                    description: Constants.ErrorDescription.firstNameEmpty))
+        }
+        
+        let lastName =  arguments[Constants.Arguments.lastName] as? String ?? ""
+        return .success((firstName, lastName, code))
+    }
 }
 
 // MARK: - App delegate methods -
@@ -124,6 +198,23 @@ extension SwiftTruecallerSdkPlugin: TCTrueSDKDelegate {
         eventSink?(map)
     }
     
+    public func verificationStatusChanged(to verificationState: TCVerificationState) {
+        var map = [String: Any]()
+        map[Constants.String.result] = verificationState.rawValue
+        switch verificationState {
+        case .otpInitiated:
+            map[Constants.String.data] = trueSdk.tokenTtl()
+        case .otpReceived,
+                .verifiedBefore:
+            break
+        case .verificationComplete:
+            map[Constants.String.data] = trueSdk.accessTokenForOTPVerification
+        @unknown default:
+            break
+        }
+        eventSink?(map)
+    }
+    
     public func didReceive(_ profileResponse: TCTrueProfileResponse) {
         trueProfileResponse = profileResponse
     }
@@ -133,6 +224,6 @@ extension SwiftTruecallerSdkPlugin: TCTrueSDKDelegate {
         map[Constants.String.result] = Constants.String.failure
         map[Constants.String.data] = error.toDict.tojsonString
         trueProfileResponse = nil
-        eventSink?(error)
+        eventSink?(map)
     }
 }