I bought flip phone to my grandfather. It’s easy to use, as he just needs to physically open it to answer the call and close it to drop the call. I configured i

I bought flip phone to my grandfather. It’s easy to use, as he just needs to physically open it to answer the call and close it to drop the call. I configured important numbers as shortcuts to 1-9, so he needs to press a button and that’s all. It worked quite good. The only issue is that modern phone factors tend to exclude flip phones.