I customized the vendor image in AOSP by modifying BoardConfigPartial.mk to generate a custom vendor image rather than using the prebuilt one. After successfully flashing the custom vendor image onto my device, it boots up fine but does not detect the SIM card.

Steps I Took:

1. Commented out BOARD_PREBUILT_VENDORIMAGE := vendor/google_devices/lynx/proprietary/vendor.img.
2. Added the following lines:
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   <code>ENABLE_VENDOR_IMAGE := true

   BOARD_VENDORIMAGE_PARTITION_SIZE := 1073741824 # 1GB

   BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4

   TARGET_COPY_OUT_VENDOR := vendor

   ALLOW_MISSING_DEPENDENCIES := true

   </code>

   <code>ENABLE_VENDOR_IMAGE := true BOARD_VENDORIMAGE_PARTITION_SIZE := 1073741824 # 1GB BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4 TARGET_COPY_OUT_VENDOR := vendor ALLOW_MISSING_DEPENDENCIES := true </code>

   ENABLE_VENDOR_IMAGE := true
   BOARD_VENDORIMAGE_PARTITION_SIZE := 1073741824 # 1GB
   BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
   TARGET_COPY_OUT_VENDOR := vendor
   ALLOW_MISSING_DEPENDENCIES := true
   

3. Noticed that the initial custom vendor image was smaller, so I compared it with the prebuilt one and added missing files to the build rules.
4. Successfully generated a custom vendor image with all necessary files.

Issue:

Despite successful boot, the device does not detect the SIM card after flashing the custom vendor image.

Question:

What steps can I take to troubleshoot and resolve the SIM card detection issue with my custom AOSP vendor image?

Thanks in advance for any guidance!

Steps I Took:

1. Commented out BOARD_PREBUILT_VENDORIMAGE := vendor/google_devices/lynx/proprietary/vendor.img.
2. Added the following lines:
   Plain text

   Copy to clipboard

   Open code in new window

   EnlighterJS 3 Syntax Highlighter

   <code>ENABLE_VENDOR_IMAGE := true

   BOARD_VENDORIMAGE_PARTITION_SIZE := 1073741824 # 1GB

   BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4

   TARGET_COPY_OUT_VENDOR := vendor

   ALLOW_MISSING_DEPENDENCIES := true

   </code>

   <code>ENABLE_VENDOR_IMAGE := true BOARD_VENDORIMAGE_PARTITION_SIZE := 1073741824 # 1GB BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4 TARGET_COPY_OUT_VENDOR := vendor ALLOW_MISSING_DEPENDENCIES := true </code>

   ENABLE_VENDOR_IMAGE := true
   BOARD_VENDORIMAGE_PARTITION_SIZE := 1073741824 # 1GB
   BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
   TARGET_COPY_OUT_VENDOR := vendor
   ALLOW_MISSING_DEPENDENCIES := true
   

3. Noticed that the initial custom vendor image was smaller, so I compared it with the prebuilt one and added missing files to the build rules.
4. Successfully generated a custom vendor image with all necessary files.

Issue:

Despite successful boot, the device does not detect the SIM card after flashing the custom vendor image.

Question:

What steps can I take to troubleshoot and resolve the SIM card detection issue with my custom AOSP vendor image?

Thanks in advance for any guidance!