AT&T does not "block" it if you pay for it.....
But as they explain, it is all that catastrophic? http://support.vzw.com/faqs/iphone/iphone_vvm.htmlQuote:Whats bad: Existing Verizon customers will lose their old voicemail boxes, including all messages and greetings, so they will need to listen to everything they want to hear before making the transition. All existing messages will be erased and can not be recovered once an iPhone 4 is activated, Verizon notes.
Only one company came to the table. And he kept his promise.Quote:After a year and a half of secret meetings, Jobs had finally negotiated terms with the wireless division of the telecom giant (Cingular at the time) to be the iPhone's carrier. In return for five years of exclusivity, roughly 10 percent of iPhone sales in AT&T stores, and a thin slice of Apple's iTunes revenue, AT&T had granted Jobs unprecedented power. He had cajoled AT&T into spending millions of dollars and thousands of man-hours to create a new feature, so-called visual voicemail, and to reinvent the time-consuming in-store sign-up process. He'd also wrangled a unique revenue-sharing arrangement, garnering roughly $10 a month from every iPhone customer's AT&T bill. On top of all that, Apple retained complete control over the design, manufacturing, and marketing of the iPhone. Jobs had done the unthinkable: squeezed a good deal out of one of the largest players in the entrenched wireless industry.
Quote:If I have an iPhone 4 on another wireless carrier and switch to an iPhone 4 on Verizon Wireless, will all of my accessories be compatible?
Most accessories should work, however you may find that cases and covers could be different depending on the product manufacturer.
Question 11: http://support.vzw.com/faqs/iphone/iphone_faq.html