HUAWEI will bring EMUI 12 to plenty of older phones
Huawei P20 Pro EMUI 12 Installation Service (Paid) CLT-L09, L04, L29, HW-01K
Stable EMUI 12 for Huawei P20 and P20 Pro expanding - Huawei Central
I was thinking what happened to the P20 series that nothing was mentioned about EMUI 12 since the official list was released at the end of October but it seems that in
Check Huawei P20 and Mate 10 devices with EMUI 12 UI - Huawei Central