Sorted by: 1. For all the experience I have, calling my family in multiple IDs, the person only knows the ID that they already have, and FaceTime has no options to automatically reveal the other IDs that person uses. I wanted to enable some automatic thing like this for myself, because I have 4 different cell numbers and 3 e-mails with FaceTime. If you want to ensure FaceTime uses none of your cellular data, you can set it to only work via Wi-Fi: From Settings, select Cellular; Scroll down to FaceTime and toggle it off Keep in mind, this means you won’t be able to make or receive FaceTime calls unless you’re connected to Wi-Fi. 2. How to turn off video on FaceTime Step 1. Launch the Settings app. Step 2. Scroll down to FaceTime and tap on it. Step 3. Now scroll down and you will see the Caller ID section. Step 4. Select the email address you wish to display FaceTime can be used over Wi-Fi but first it has to be activated on the device. This activation requires a cellular connection as it involves a silent SMS message being sent to activate both FaceTime and iMessages on the iPhone. Once the activation is done, you can remove the SIM and use the device as Wi-Fi only. Change Your iMessage and FaceTime Number. Since iMessage and Facetime only support one-SIM usage at a time, follow the next steps to learn how to switch between two numbers for iMessage and FaceTime: 1. First, go to your iPhone’s Home screen then locate and tap on the Settings app. 2. In Settings, scroll down until you get to the Messages 5. Dial the number. From here, you will dial the number you wish to reach. Include the city code first, and then dial the number. In Australia, phone numbers are 9 digits. [6] To review, say you're calling Sydney. To make a call to a landline phone, you would dial 011-61, then 2, followed by the 9 digit phone number. .

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