Hi! This is a great question! The Stratosphere is a 4G/LTE device and uses SIM card technology. Because the SIM serves a specific purpose there is little room for contacts. You may be able to get 10-30 contacts. It is recommended to use the phone or Google for contacts, if you happen to have a Gmail account. That does make saving and transferring your contacts very easy as Google backs them up on www.google.com/contacts.