Is finger touch technology patented by Apple? If so, why can all mobile phones now use this technology? Also, all smart phones now

For finger touch technology, Apple has patents in this area, but it is impossible to cover everything. It is not ruled out that other companies also have patents in this area; there are other companies that can obtain permission from Apple to implement their patented technologies or Design, but it does not rule out the possibility that, driven by huge profits, others may implement it without Apple's permission (when the gain is much greater than the effort, or there is a lucky mentality of not being discovered and resorting to court).