Visual voicemail– voicemails not delivered on time, disrupting schedules, and without explanation.
Activation woes – new iPhone owners met by sometimes days-long waiting periods when AT&T's activation servers went down on launch day for the 3G and 3GS.
Network unreliability – dropped calls are common, and system overloads at the South By Soutwest Interactive Festival and other high-profile tech gatherings.
Missing features – Apple announced tethering and MMS support in June, and despite being available on mobile carriers in other countries, AT&T has yet to enable the features in the US.
AT&T reportedly responded by email to Siegler's post, "expressing their concern over the problems and the overall reaction to this story. They say they are looking into the reports of issues and are going over the tweets/comments."
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