It's usually quite easy, they're often on Github though some companies host them themselves. There are a few companies (looking at you Lenovo) who release parti

It's usually quite easy, they're often on Github though some companies host them themselves. There are a few companies (looking at you Lenovo) who release partial/non-working sources but most vendors do comply with the GPL. https://github.com/nokia-dev/android_device_nokia_sdm660-common https://github.com/nokia-dev/android_device_nokia_sdm660-com... https://github.com/OnePlusOSS/android_kernel_oneplus_sdm845 https://github.com/OnePlusOSS/android_kernel_oneplus_sdm845 https://github.com/MiCode/Xiaomi_Kernel_OpenSource https://github.com/MiCode/Xiaomi_Kernel_OpenSource https://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS630KL/ASUS_I01WD_kernel_tar.zip https://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS630KL/ASUS_I01W... https://android.googlesource.com/kernel/msm/+/android-9.0.0_r0.31/ https://android.googlesource.com/kernel/msm/+/android-9.0.0_... https://consumer.huawei.com/en/opensource/ https://consumer.huawei.com/en/opensource/ etc.