If in the past we kept our mobile phones for several years, today the average duration of keeping the same device rarely exceeds two years. This trend can be explained quite simply by the fact that manufacturers are offering new smartphones much more regularly, which implies a willingness to follow the pace of innovations from users.
So although the battery life is between 3 and 5 years depending on their use, this criterion is of little importance in the eyes of users who will have changed their device long before it is found out of order. In addition, users orient their purchase more based on device performance, camera, storage capacity, OS, etc. Manufacturers then have no choice but to adapt and to offer ever more attractive, more elegant devices, which very often require the use of suitable materials in order toorganize their internal components.