To na poczatku server.lua
```
ESX = nil

TriggerEvent('esx:getSharedObject', function(obj) ESX = obj end)
```

To na poczatku client.lua
```
ESX                           = nil

Citizen.CreateThread(function()
	while ESX == nil do
		TriggerEvent('esx:getSharedObject', function(obj) ESX = obj end)
		Citizen.Wait(0)
	end
end)
```

Znajdz ten event i go podmien. Lub dodaj linie ktorych brakuje. server.lua
```
RegisterServerEvent('gcPhone:internal_startCall')
AddEventHandler('gcPhone:internal_startCall', function(source, phone_number, rtcOffer, extraData)
    local xPlayer = ESX.GetPlayerFromId(source)
    local SIM = xPlayer.getInventoryItem('sim').count
    if SIM >= 1 then
        if FixePhone[phone_number] ~= nil then
            onCallFixePhone(source, phone_number, rtcOffer, extraData)
           return
        end

        local rtcOffer = rtcOffer
        if phone_number == nil or phone_number == '' then
            print('BAD CALL NUMBER IS NIL')
            return
        end

        local hidden = string.sub(phone_number, 1, 1) == '#'
        if hidden == true then
            phone_number = string.sub(phone_number, 2)
        end

        local indexCall = lastIndexCall
        lastIndexCall = lastIndexCall + 1

        local sourcePlayer = tonumber(source)
        local srcIdentifier = getPlayerID(source)

        local srcPhone = ''
        print(json.encode(extraData))
        if extraData ~= nil and extraData.useNumber ~= nil then
            srcPhone = extraData.useNumber
        else
            srcPhone = getNumberPhone(srcIdentifier)
        end
        print('CALL WITH NUMBER ' .. srcPhone)
        local destPlayer = getIdentifierByPhoneNumber(phone_number)
        local is_valid = destPlayer ~= nil and destPlayer ~= srcIdentifier
        AppelsEnCours[indexCall] = {
            id = indexCall,
            transmitter_src = sourcePlayer,
            transmitter_num = srcPhone,
            receiver_src = nil,
            receiver_num = phone_number,
            is_valid = destPlayer ~= nil,
            is_accepts = false,
            hidden = hidden,
            rtcOffer = rtcOffer,
            extraData = extraData
        }


        if is_valid == true then
           getSourceFromIdentifier(destPlayer, function (srcTo)
               if srcTo ~= nill then
                   AppelsEnCours[indexCall].receiver_src = srcTo
                    TriggerEvent('gcPhone:addCall', AppelsEnCours[indexCall])
                    TriggerClientEvent('gcPhone:waitingCall', sourcePlayer, AppelsEnCours[indexCall], true)
                    TriggerClientEvent('gcPhone:waitingCall', srcTo, AppelsEnCours[indexCall], false)
                else
                    TriggerEvent('gcPhone:addCall', AppelsEnCours[indexCall])
                    TriggerClientEvent('gcPhone:waitingCall', sourcePlayer, AppelsEnCours[indexCall], true)
                end
            end)
        else
            TriggerEvent('gcPhone:addCall', AppelsEnCours[indexCall])
            TriggerClientEvent('gcPhone:waitingCall', sourcePlayer, AppelsEnCours[indexCall], true)
        end
    else
        TriggerClientEvent("pNotify:SendNotification", {text = "Nie posiadasz karty SIM.", type = "warning", queue = "global", timeout = 2000, layout = "centerLeft"})
    end
end)
```

Znajdz te funkcje i podmien je lub dodaj brakujace linie. server.lua
```
function _internalAddMessage(transmitter, receiver, message, owner)
    local xPlayer = ESX.GetPlayerFromId(source)
    local SIM = xPlayer.getInventoryItem('sim').count
    if SIM >= 1 then
    local Query = "INSERT INTO phone_messages (`transmitter`, `receiver`,`message`, `isRead`,`owner`) VALUES(@transmitter, @receiver, @message, @isRead, @owner);"
    local Query2 = 'SELECT * from phone_messages WHERE `id` = (SELECT LAST_INSERT_ID());'
    local Parameters = {
        ['@transmitter'] = transmitter,
        ['@receiver'] = receiver,
        ['@message'] = message,
        ['@isRead'] = owner,
        ['@owner'] = owner
    }
    return MySQL.Sync.fetchAll(Query .. Query2, Parameters)[1]
else
end
end

function addMessage(source, identifier, phone_number, message)
    local xPlayer = ESX.GetPlayerFromId(source)
    local SIM = xPlayer.getInventoryItem('sim').count
    if SIM >= 1 then
    local sourcePlayer = tonumber(source)
    local otherIdentifier = getIdentifierByPhoneNumber(phone_number)
    local myPhone = getNumberPhone(identifier)
    if otherIdentifier ~= nil then
        local tomess = _internalAddMessage(myPhone, phone_number, message, 0)
        getSourceFromIdentifier(otherIdentifier, function (osou)
            if tonumber(osou) ~= nil then
                -- TriggerClientEvent("gcPhone:allMessage", osou, getMessages(otherIdentifier))
                TriggerClientEvent("gcPhone:receiveMessage", tonumber(osou), tomess)
            end
        end)
    end
    local memess = _internalAddMessage(phone_number, myPhone, message, 1)
    TriggerClientEvent("gcPhone:receiveMessage", sourcePlayer, memess)
    else
    end
end
```

``` client.lua o ile sie nie myle
Citizen.CreateThread(function()

  while true do
    Citizen.Wait(0)
    if IsControlJustPressed(1, KeyOpenClose) then
      TooglePhone()
      ```
      TriggerServerEvent('sim:start')
      ```
    end
    if menuIsOpen == true then
      for _, value in ipairs(KeyToucheCloseEvent) do
        if IsControlJustPressed(1, value.code) then
          SendNUIMessage({keyUp = value.event})
        end
      end
    end
  end
end)
```

``` client.lua
RegisterNetEvent("sim:notif")
AddEventHandler("sim:notif", function()
  if menuIsOpen == true then
    ESX.ShowNotification('~r~Nie masz karty SIM')
  end
end)
```

``` server.lua
RegisterServerEvent('sim:start')
AddEventHandler('sim:start', function()
    local xPlayer = ESX.GetPlayerFromId(source)
    local SIM = xPlayer.getInventoryItem('sim').count
    if SIM < 1 then
        TriggerClientEvent('sim:notif', source)
    end
end)
```

Dodaj do bazy danych item o nazwie `sim`
Usun folder `cache`