A simple phone for use by an elderly person, only for calls exclusively and nothing else.
EDIT: 3/8/24 The phone broke after 4 months of use. I do not recommend it.

It is a phone only for calls and SMS. No photos, internet.
For this type of phone, I would expect better battery life. From using it for 2-3 months, I estimate that the battery lasts 6-7 days on standby (no usage at all) and 3-4 days if there are calls with a duration of 20-30 minutes per day.
Other than that, the sound quality on calls and signal reception (2G) is fine.

POSITIVES:
Small size (fits in your pocket), has vibration, plays radio without antenna, alarm clock works even when closed, good value for money.

NEGATIVES:
The only issue it has is that when the signal is low, you can't hear very well (probably because it's 2G).

I tried it for detoxification from the smartphone.

I bought it for the army, it is very good for this use. The only thing I would like is the following two:

1) To have the classic Snake game available. Now it only has Tetris and another one with blocks.
2) To have a stronger volume in the headphones to hear the person speaking, because in a noisy environment it is difficult to hear.

Other than that, for the 11€ I bought it, it is value for money!

I bought it for the army, I will come back in a few months.
It was fine for almost 2 months that I used it. It worked.
I still use it occasionally when I want to go somewhere without my smartphone.

It looks good, it recognizes the SD card (32GB) and can hold up to 2 SIM cards. It doesn't have vibration. It is relatively slow, even compared to mobile phones from 15-20 years ago. There is a medium button between the arrows, but it is difficult to press (I have small hands). Only time will tell how durable it is.

Perfect for Viber.