Another argument in favor of dumbphones (and it is a big one): their prix. Count between 70 and 200 euros according to the models to equip you and this, without having to renew the shopping experience before a good time.
Because unlike smartphones which often suffer from battery obsolescence (difficult to leave a laptop on for more than 24 hours in a row following a few years of use), dumbphones can claim a much longer lifespan. A good way tosave and of to preserve the environment.
