Blackberry has had to be wiped out several times already this year and reloaded. Is not efficient and makes for a pain. Amazing how after paying $200 for it they came out with a blackjack 2... If it gets blocked and numbers and contacts are not saved to SIMS card, consider it lost and irreplaceable. Calling customer service at Cingular will get you nowhere. You will be told, " please reset your Blackjack, all data will be lost" However, when it does work it works great in many aspects, able to check email up and have it replicate every 15 minutes. There is no way to close internet connections which caused a huge cell phone bill the first month until changing data plans. You may want to call your cell company and immediatly upgrade to an unlimited internet package. The one and only way to disconnect internet connection is to remove the battery and restart phone.