Korištene da prošire domet mobitela do mjesta bez signala, femto-celije prebacuju i pojacavaju signale mobitela, što je odlicno ukoliko ste haker koji želi prisluškivati i pronaci poziv sa odredjenog broja mobitela.
Used to expand mobile coverage to places without service, femtocells reroute and boost cellular signals... Which is great if you're a hacker looking to tap and trace a call made by a specific cellphone number.