SIM 4G E WI-FI

• sb

  simone bovolenta

  7/13/26, 6:52 AM

  Hello, I have a Dasaita G13 car stereo with Android 13 for the Nissan Qashqai J11, purchased from you in May 2026. It arrived in June and is fully installed (Qualcomm 665, 6GB RAM, 64GB ROM). After a few weeks, I wanted to get a new SIM card to install it in the car. I'm having a problem with the built-in 4G SIM. The SIM card is detected by the unit, but it doesn't connect to the mobile network. The same SIM card works perfectly on my smartphone, so the problem isn't related to the SIM card or the data plan. I've already tried the following: * Resetting the unit. * Setting the correct APN. * Testing different network modes. * Using the "4G LTE Only" app. * Restarting the unit several times. * Inserting another SIM card with a different carrier. None of these solutions solved the problem. Furthermore, after each reboot, the network settings revert to their previous values. Furthermore, the Wi-Fi connection is unstable and disconnects frequently, both to the home modem and the phone's hotspot. Could you help me? Is this a known firmware issue, a modem problem, or a hardware failure? If needed, I can provide the firmware version, microcontroller version, serial number, and photos or videos. Thank you very much for your support. Best regards,

   

   

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• SD

  Vip

  Support Dasaita Staff member

  7/16/26, 8:40 AM

  @simone bovolenta 

  Hello.

  May I know the carrier of your SIM Card? Is it T-Mobile?
  Our engineering team is working on a permanent solution for this T-Mobile SIM Card network incompatibility issue.
  Below is a reliable temporary workaround shared by other users, you may check the complete tutorial here:
  https://www.dasaita.com/community/forum/topic/217296/interim-work-around-for-g13-t-mobile-problem#post-420277

  If you happen to have the AT&T SIM card on hand, please give it a shot.

   

  About WiFi issue, here are some trouble-shootings steps for you:
  1.
  Please confirm if the Bluetooth name(CAR-KIT) and PIN number(0000) are displayed on the unit:
  Settings > Connected devices > Bluetooth > Device Name; PIN Number.
  2. 
  Please check if the WiFi antenna has been screwed well.
  3.
  Please note that Zlink(Wireless Carplay/Android Auto) overrides WiFi.
  WiFi cannot be connected successfully when you’re using Zlink, cuz the network access has been occupied by Zlink.
  Please firstly confirm you've disconnect Zlink correctly before connecting WiFi.
  And please disable auto connect Zlink function if needed:
  CarPlay/Android Auto App > Settings > Background Connection > Off.
  4.
  Reset WiFi:
  Settings > System > Reset Options > Reset WiFi, Mobile&Bluetooth.
  5.
  If possible, please use other phones to test how it works.

  If you need further help, please contact our team via below email address.

  Email: support@dasaita.com

   

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