Write a conclusion for this below:

The conclusion should highlight how transferring from cell phones to smartphones has changed in the $21$st century. key points to consider:

$1-$ Discuss how advancements in data transfer protocols and software have simplified the process over time.

$2-$ Analyze the role of cloud storage and manufacturer$-$provided transfer tools in making the transition smoother.

$3-$ Explore how user expectations have shifted from basic functionality to seamless data migration when switching devices.

$4-$ Briefly touch upon any remaining challenges users might face and potential future improvements in data transfer methods.

By examining the historical context and user experiences, this approach will provide a richer understanding of how transferring from cell phones to smartphones has transformed in the $21$st century