With Bluetooth in your car you can make hands-free calls, without taking your phone out of your pocket. It reroutes calls to your car's audio system when you are driving, automatically muting any music that is playing while you are speaking. You can also connect to music on your phone and some MP3 players. Apple Watch Cellular comes with a build-in eSIM. It needs to be paired with the SIM card in your iPhone. How to use your Apple Watch without your iPhone nearby; Apple Watch Series 4 is typically expected to support all the phone call/cellular features of Series 3. Note: Having an iPhone is a prerequisite for using an(any) Apple Watch. Thus, it Pull out the card tray according to the instructions and place the SIM card on it. Insert horizontally to avoid tray damage or SIM card loose. Notice *If the SIM card size doesn't match the slot, please replace the SIM card with the telecom operator. *Do not cut the SIM card by yourself, otherwise the SIM card will be damaged. A SIM Card Reader is only a small part of the hardware necessary to allow a computer to talk to cellphone towers and so "use mobile data" You can get LTE adapters (or laptops that already contain LTE modules) that contain all the radio electronics necessary to talk to a cellphone tower, but normally these also contain a SIM card slot so your Set up without switching. Insert the SIM card if the device came with one, turn it on, and follow the on-screen steps to complete the initial setup. To get step-by-step instructions, choose your device and select Update & Backup > Out of box setup. Hello, i control my mavic with my phone connected to remote controller. I bought a new phone. So i had tu put my SIM card into the new phone. Suppose i fly my mavic with my new phone connected to RM . While the drone is up , Could i also take of with the mavic Air with my old phone connected to the RM of the Mavic Air (phone that has no SIM card) So , can you fly without SIM card ? As the 1. Using Wi-Fi calling: One of the most convenient ways to make calls without a SIM card is through a feature called Wi-Fi calling. This feature allows you to make and receive calls over a Wi-Fi network instead of relying on a cellular network. To use this feature, your phone needs to support Wi-Fi calling, and you need to have a stable Wi-Fi If you plan on using your iPhone without a carrier, you will first unlock it. Your iPhone will pop up the No Sim Card or Sim Required Message when it connects to your Wi-Fi during Setup. If you are using IOS 11.4 and later, you can dismiss the pop-up message and complete consecutive steps without requiring a sim card. Q9oP.