Write an article based on this "Connect your device to Wi-Fi. Use WhatsApp to call London. Phone London with FaceTime. Call London using Skype."

Article:
Laptops, mobile phones, and tablets can all be used to phone London using Wi-Fi. There are many apps that will work on these devices; often these apps are cheaper than traditional phones. Wi-Fi hotspots are available at many cafes, libraries, or restaurants. If you don't have access to Wi-Fi at your home, look for one of these hotspots to connect to Wi-Fi. You will need to add the phone number to your contacts. Open your address book and enter a plus sign (+) followed by the phone number; the plus sign indicates that the entry is an international number. Remove any leading zeroes, and do not include the exit code. Include the country code of 44. You should also include the area code if dialing a landline. A phonebook entry for a London landline should look like this: +44 20 XXXX XXXX. A London mobile number will not include the area code and will look like: +44 7XXX XXX XXX. To place the call using WhatsApp, you open the app and then open a chat with the person you want to call. Then, select the phone button on the top of the screen to make the call. FaceTime is included on almost all Apple devices. To place a call, open the app and use your Apple ID to login. iPhone users will automatically be logged in. Type in the email address or phone number of the person you want to contact. Next, select either the audio or video icon to place the call. The video icon will allow you to video chat, while the audio icon will have sound but no picture. Make sure the person you are calling also has FaceTime. FaceTime can only be used to make calls if both parties have the app. After logging into Skype, select the call phones icon. The dialing pad will then appear on the screen. The current calling rates, based on the selected country, will also appear. Select the United Kingdom from the drop-down menu. This menu is located above the dial pad. Once you select the UK, the correct country code will be automatically entered. Type in the phone number you want to call. Remember that if you want to phone a landline, you will need to dial the area code before the phone number. Press the blue call button to make your phone call. After you have entered the numbers, all you need to do is to press the call button, and your call will be placed.