Hello Juan,
Yes it is possible. You can use one smartphone and receive information from an infinite number of CC2540/41 devices.
The easiest way would be to give each device a unique name like "Sensor_xxx" and have the smartphone sequentially connect to each one, read the data and then connect to another. There are other methods as well.
Search the forum to find other ways.
Thanks,
----Mark this answer as VERIFIED if you are satisfied.