MR. VARSAVSKY has worked overtime trying to line up more high-profile partners for FON. To that end, he traveled to Cupertino, Calif., last fall to meet with Steve Jobs, the chief executive of Apple.

During that 90-minute meeting, Mr. Varsavsky says, the two men discussed why a partnership might make sense.

Apple has sold millions of its Wi-Fi routers to residential customers, and its community of Wi-Fi users who share router access would be an ideal platform for FON. For his part, Mr. Jobs had developed an interest in Wi-Fi sharing because of the expanding number of iPhone users who are often frustrated by locked Wi-Fi access points.

But, Mr. Varsavsky says, from the moment that he and Mr. Jobs met, their discussion devolved into an argument. (Mr. Jobs did not respond to requests to comment on the meeting.)

At the outset, Mr. Varsavsky recalled, Mr. Jobs asked sharply, “Who needs your community?” and “Why should British Telecom bother to do a deal with you, and why shouldn’t people just leave their routers open for sharing?”

Mr. Varsavsky says he responded, “Why should you bother to do a deal with AT&T? Shouldn’t iPhones just be connected freely with any cellphone network?”

Mr. Varsavsky says he left the meeting with the uncomfortable feeling that Apple might end up as a competitor rather than as a partner.