There are a lot of components that can be faked in smartphones. Especially in budget-oriented smartphones that can be found almost anywhere in the market. In order to keep you from buying fake phones, HMD has released a handy guide to spot an original Nokia 3310 2G/3G and Nokia 8110 4G.
Hopefully this guide from HMD will help you determine in getting original Nokia smartphones in the future. Buying original smartphones also help the manufacturers in order for the to release more smartphones in the future.