CarPlay Ai Box Android 13.0 System how to insert SIM Card into UX999Ultra2.0？

Many friends recently asked me how to insert a SIM card? Or ask me why the SIM card is inserted but not detected? There are two answers to this question: 1. The SIM card is inserted incorrectly, please check whether the SIM card of the device is inserted correctly after watching the video 2. The frequency band of the SIM card is not within the range supported by our device, which is also unusable. Because our Qualcomm chip is developed by Qualcomm, it has nothing to do with the device, and we cannot intervene. If your device is not inserted incorrectly, but it still cannot be recognized, you can choose to try another SIM card of another operator. Still can&work, maybe the frequency band of your SIM card is not in our supported range, so it can&be used. Some friends will ask why the SIM card is recognized but the Internet cannot be accessed? let me answer for you 1. Maybe it is because the SIM card you are using is not from a popular operator, so you cannot use the network, you can add APN to try to use the Internet Set APN method: 1. Open Settings 2. Open "Network & Internet" 3. Select "Mobile network" 4. Select "Access Point Names" 5. Add carrier APN Friends, if the setting is unsuccessful, you can call the local operator and ask them to teach you how to set the APN, they all know this