diff --git a/Example/iOS Example/ViewController.swift b/Example/iOS Example/ViewController.swift
index 01596f5..af5924f 100644
--- a/Example/iOS Example/ViewController.swift	
+++ b/Example/iOS Example/ViewController.swift	
@@ -23,7 +23,7 @@ class ViewController: UIViewController {
   let phoneNumberFormatter = DefaultTextInputFormatter(textPattern: "### (###) ###-##-##")
   let cardNumberFormatter = DefaultTextInputFormatter(textPattern: "XXXX XXXX XXXX XXXX", patternSymbol: "X")
   let sumFormatter = SumTextInputFormatter(textPattern: "# ###,## $")
-  let placeholderPhoneNumberFormatter = PlaceholderTextInputFormatter(textPattern: "### (###) ###-##-##")
+  let placeholderPhoneNumberFormatter = PlaceholderTextInputFormatter(textPattern: "+## (###) ###-##-##")
   
   // MARK: - Life Cycle
   override func viewDidLoad() {
@@ -76,8 +76,8 @@ private extension ViewController {
     phoneNumberField.defaultTextAttributes = convertToNSAttributedStringKeyDictionary([
       NSAttributedString.Key.foregroundColor.rawValue: UIColor.white,
       NSAttributedString.Key.font.rawValue: getFont()])
-//    phoneNumberInputController.formatter = phoneNumberFormatter
-    phoneNumberInputController.formatter = placeholderPhoneNumberFormatter
+    phoneNumberInputController.formatter = phoneNumberFormatter
+//    phoneNumberInputController.formatter = placeholderPhoneNumberFormatter
     phoneNumberField.delegate = phoneNumberInputController
   }
   
diff --git a/Source/Extensions/String+Extension.swift b/Source/Extensions/String+Extension.swift
index 5b14ecf..a99bee1 100644
--- a/Source/Extensions/String+Extension.swift
+++ b/Source/Extensions/String+Extension.swift
@@ -61,6 +61,14 @@ extension String {
     return String(self[rangeBegin..<rangeEnd])
   }
   
+  func leftSlice(end: String.Index) -> String {
+    return String(self[self.startIndex..<end])
+  }
+  
+  func slice(in range: Range<String.Index>) -> String {
+    return String(self[range])
+  }
+  
   func slice(from: Int, length: Int) -> String? {
     guard from < count, from + length < count else { return nil }
     let fromIndex = index(startIndex, offsetBy: from)
diff --git a/Source/TextFormatter/DefaultFormatters/Formatters/DefaultTextInputFormatter.swift b/Source/TextFormatter/DefaultFormatters/Formatters/DefaultTextInputFormatter.swift
index 387f7e4..c894986 100644
--- a/Source/TextFormatter/DefaultFormatters/Formatters/DefaultTextInputFormatter.swift
+++ b/Source/TextFormatter/DefaultFormatters/Formatters/DefaultTextInputFormatter.swift
@@ -45,13 +45,20 @@ open class DefaultTextInputFormatter: TextInputFormatter {
   // MARK: - Format input
   
   open func formatInput(currentText: String, range: NSRange, replacementString text: String) -> FormattedTextValue {
+    guard let swiftRange = Range(range, in: currentText) else { return .zero }
+    
     let unformattedRange = self.unformattedRange(from: range)
+    let unformattedRange1 = self.unformattedRange1(currentText: currentText, from: swiftRange)
+    
     let oldUnformattedText = (textFormatter.unformat(currentText) ?? "") as NSString
     
     let newText = oldUnformattedText.replacingCharacters(in: unformattedRange, with: text)
     let formattedText = textFormatter.format(newText) ?? ""
     
-    let caretOffset = getCorrectedCaretPosition(range: range, replacementString: text)
+    let caretOffset = getCorrectedCaretPosition(
+      range: swiftRange,
+      replacementString: text
+    )
     
     return FormattedTextValue(formattedText: formattedText, caretBeginOffset: caretOffset)
   }
@@ -75,11 +82,45 @@ open class DefaultTextInputFormatter: TextInputFormatter {
     return newRange
   }
   
+  func unformattedRange1(currentText: String, from range: Range<String.Index>) -> Range<String.Index> {
+    let number1 = getNumberOfFormatChars(text: currentText, before: range.lowerBound)
+    
+    let number2 = getNumberOfFormatChars(text: currentText, in: range)
+    
+    return range
+  }
+  
+  private func getNumberOfFormatChars(text: String, before: String.Index) -> Int {
+    let textLeftSlice = text.leftSlice(end: before)
+    let patternLeftSlice = textPattern.leftSlice(limit: textLeftSlice.count)
+    var result = 0
+    for (textSliceChar, patternSliceChar) in zip(textLeftSlice, patternLeftSlice) {
+      if textSliceChar == patternSliceChar { result += 1 }
+    }
+    return result
+  }
+  
+  private func getNumberOfFormatChars(text: String, in range: Range<String.Index>) -> Int {
+    let textSlice = text.slice(in: range)
+    let patternSlice = textPattern.slice(in: range)
+    
+    return 0
+  }
+  
   // MARK: - Caret position calculation
   
-  private func getCorrectedCaretPosition(range: NSRange, replacementString: String) -> Int {
-    let offset = caretPositionCorrector.calculateCaretPositionOffset(originalRange: range, replacementFiltered: replacementString)
-    return offset
+//  private func getCorrectedCaretPosition(range: NSRange, replacementString: String) -> Int {
+//    return caretPositionCorrector.calculateCaretPositionOffset(
+//      originalRange: range,
+//      replacementFiltered: replacementString
+//    )
+//  }
+  
+  private func getCorrectedCaretPosition(range: Range<String.Index>, replacementString: String) -> Int {
+    return caretPositionCorrector.calculateCaretPositionOffset(
+      originalRange: range,
+      replacementText: replacementString
+    )
   }
   
 }
diff --git a/Source/TextFormatter/DefaultFormatters/Helpers/CaretPositionCorrector.swift b/Source/TextFormatter/DefaultFormatters/Helpers/CaretPositionCorrector.swift
index 63d4fca..7bf1cc3 100644
--- a/Source/TextFormatter/DefaultFormatters/Helpers/CaretPositionCorrector.swift
+++ b/Source/TextFormatter/DefaultFormatters/Helpers/CaretPositionCorrector.swift
@@ -36,6 +36,17 @@ class CaretPositionCorrector {
     return offset
   }
   
+  func calculateCaretPositionOffset(originalRange range: Range<String.Index>, replacementText: String) -> Int {
+    var offset = 0
+    
+    if replacementText.isEmpty {
+      offset = offsetForRemove(lowerBound: range.lowerBound)
+    } else {
+      offset = offsetForInsert(lowerBound: range.lowerBound, replacementLength: replacementText.count)
+    }
+    return offset
+  }
+  
   /**
    Find indexes of patterns symbols in range
    
@@ -48,7 +59,10 @@ class CaretPositionCorrector {
     var indexes: [String.Index] = []
     var tempRange = searchRange
     while let range = textPattern.range(
-      of: String(patternSymbol), options: .caseInsensitive, range: tempRange, locale: nil) {
+            of: String(patternSymbol),
+            options: .caseInsensitive,
+            range: tempRange
+    ) {
         tempRange = range.upperBound..<tempRange.upperBound
         indexes.append(range.lowerBound)
     }
@@ -69,12 +83,19 @@ class CaretPositionCorrector {
     let indexes = indexesOfPatternSymbols(in: searchRange)
     
     if let lastIndex = indexes.last {
-        //return lastIndex.encodedOffset + 1
         return lastIndex.utf16Offset(in: textPattern) + 1
     }
     return 0
   }
   
+  func offsetForRemove(lowerBound: String.Index) -> Int {
+    let startIndex = textPattern.startIndex
+    let searchRange = startIndex..<lowerBound
+    let indexes = indexesOfPatternSymbols(in: searchRange)
+    guard let lastIndex = indexes.last else { return 0 }
+    return lastIndex.utf16Offset(in: textPattern) + 1
+  }
+  
   /**
    Calculate offset for caret, when characters will insert
    
@@ -95,4 +116,16 @@ class CaretPositionCorrector {
       return textPattern.distance(from: textPattern.startIndex, to: textPattern.endIndex)
     }
   }
+  
+  func offsetForInsert(lowerBound: String.Index, replacementLength: Int) -> Int {
+    let startIndex = lowerBound
+    let searchRange = startIndex..<textPattern.endIndex
+    let indexes = indexesOfPatternSymbols(in: searchRange)
+    
+    if replacementLength <= indexes.count {
+      return textPattern.distance(from: textPattern.startIndex, to: indexes[replacementLength - 1]) + 1
+    } else {
+      return textPattern.distance(from: textPattern.startIndex, to: textPattern.endIndex)
+    }
+  }
 }
diff --git a/Source/TextFormatter/TextFormatter/FormattedTextValue.swift b/Source/TextFormatter/TextFormatter/FormattedTextValue.swift
index 719f1a3..164f2a4 100644
--- a/Source/TextFormatter/TextFormatter/FormattedTextValue.swift
+++ b/Source/TextFormatter/TextFormatter/FormattedTextValue.swift
@@ -16,4 +16,8 @@ public struct FormattedTextValue: Equatable {
     self.formattedText = formattedText
     self.caretBeginOffset = caretBeginOffset
   }
+  
+  static var zero: FormattedTextValue {
+    return FormattedTextValue(formattedText: "", caretBeginOffset: 0)
+  }
 }
diff --git a/Tests/DefaultTextInputFormatterTests/DefaultTextInputFormatterInputTests.swift b/Tests/DefaultTextInputFormatterTests/DefaultTextInputFormatterInputTests.swift
index 88507ac..c5aa553 100644
--- a/Tests/DefaultTextInputFormatterTests/DefaultTextInputFormatterInputTests.swift
+++ b/Tests/DefaultTextInputFormatterTests/DefaultTextInputFormatterInputTests.swift
@@ -90,4 +90,24 @@ class DefaultTextInputFormatterInputTests: XCTestCase {
     let expectedResult = FormattedTextValue(formattedText: "12 03", caretBeginOffset: 4)
     XCTAssert(actualResult == expectedResult, "\n\(actualResult) must be equal to\n\(expectedResult)")
   }
+  
+//  func test7() {
+//    let result = formatter.formatInput(
+//      currentText: "😀",
+//      range: NSRange(location: 0, length: 0),
+//      replacementString: "😀"
+//    )
+//    let expectedResult = FormattedTextValue(formattedText: "😀", caretBeginOffset: 2)
+//    XCTAssertEqual(result, expectedResult)
+//  }
+//
+//  func test8() {
+//    let result = formatter.formatInput(
+//      currentText: "😀",
+//      range: NSRange(location: 2, length: 0),
+//      replacementString: "😎"
+//    )
+//    let expectedResult = FormattedTextValue(formattedText: "😀😎", caretBeginOffset: 2)
+//    XCTAssertEqual(result, expectedResult)
+//  }
 }