If you encounter difficulties when trying to initialize the SD card via the EZVIZ APP, below are some troubleshooting steps to resolve the issue for you:

1. Ensure both the firmware of your camera and EZVIZ APP are running on the latest version.

2. Ensure the SD card is class 10 or rated at UHS-1. The file format of the SD card should be FAT32 for capacities below 64GB and exFAT for capacities of 64GB and above. Click Here to view partial test results of SD card compatibility.

3. Power off your camera, remove and reinsert the SD card, power the camera on and then initialize the card again on the EZVIZ APP.

4. To further rule out the SD card issue, you may try to test with a different SD card or install the card in question on another EZVIZ device. 

5. Try to factory reset your camera by holding the Reset button. This will turn the device to the default factory settings and might help resolve minor issues.

Hold the reset button for 5-10 seconds and wait for the prompt informing you that the device has been reset successfully. Some cameras will not give you the prompt; however, wait for 1-2 minutes for the indicator lights to flash blue. Generally, reset takes about 1-2 mins.

1. Please check the status of the indicator light first:

- If it is solid blue or flashing blue slowly, please refresh the home page on the EZVIZ APP to check whether the camera becomes online or not.

- If the indicator light is flashing red slowly, you can try the following two methods:

1) Please reboot your router as it may be experiencing connectivity and range issues.

2) Unplug your camera, wait for 10-30 seconds, then plug it back in to see if this solves the offline problem.

2. If the camera is still offline, you can try to reconfigure it by following the steps below:

- Connect your smartphone to your 2.4GHz home Wi-Fi network if your camera supports 2.4GHz only.

- Open your EZVIZ APP, tap the three-dot icon to enter the Device Settings page and tap the Wi-Fi button.

- Reset the device by pressing the reset button for a few seconds.

- Wait for a while, make sure the indicator light turns to flash blue quickly and tap Next.

- Check that your WIFI and password are correct. Then tap Next to connect to device AP.

- Please wait for the device to be configured and your device should be back online. 

If your camera goes offline frequently, below are some troubleshooting steps to resolve the issue for you:

Step 1: Ensure both the firmware and EZVIZ app are running on the latest version.

Step 2: Ensure that your Wi-Fi network signal is good. You can check the signal by connecting your phone to the same WiFi your camera connects to, entering More page > Settings > Device Network Tools > Check WiFi signal.

Step 3: If not good, you can try to move the camera closer to your router, avoid obstacles and interference such as wall, elevator, microwave, washing machines, and Bluetooth devices. 

Step 4: If your WiFi router has an adjustable antenna, try pointing it in various directions.

Step 5: Try to change the Wi-Fi channel to a less crowded one.

Step 6: If possible, disconnect some devices you seldom use from your router.

Step 7: If your camera supports Ethernet cable, you can also try to connect it using a cable.

Step 8: If you have two EZVIZ devices and the other one is working fine, you can also try to switch the locations to further determine the issue.

Please follow the steps below:

1. Make sure that the Wi-Fi router is good and functional. You can check it on EZVIZ mobile app by clicking "Network Testing" on the configuration failed page or check if your mobile phone can browse the Internet by turning off data and connecting only to Wi-Fi.

2. For EZVIZ devices that support 2.4G Wi-Fi only, ensure that you connect your mobile phone to 2.4G Wi-Fi before network configuration. 

3. Make sure that your Wi-Fi network signal is good. Most EZVIZ devices perform better when the upload speed is higher than 2 Mbps for each camera. You can check your Wi-Fi signal in the EZVIZ mobile app by clicking the profile photo on the top left--Settings--Device Network Tools--Check Wi-Fi Signal. 

4. If not good, please follow the steps below to improve your network:

- you can try to move the camera closer to your router, avoid obstacles and interferences such as wall, elevator, microwave, washing machines and Bluetooth devices. 

- If possible, unplug some infrequently used devices from your router or reboot the router.

- Try to change the Wi-Fi channel to a less crowded one. 

5. Please also review some other network requirements that may help resolve your issue: 

- Make sure that DHCP is enabled on your router.

- Verify that IPV6 is turned off on your router.  

- Make sure that the blacklist/whitelist firewall settings are turned off on your router.

6. If your camera supports Ethernet cable, you can also try to connect it via cable. Alternatively, if possible, try connecting the camera to another home Wi-Fi.