大家抱怨最多的是visual voice mail：https://www.reddit.com/r/USMobile/comments/1iiog41/tips_for_getting_visual_voicemail_to_work_on/
也有很多说RCS：https://www.reddit.com/r/USMobile/comments/1iijq6y/does_dark_star_support_iphone_group_chat_now/
不过他们说后面更了carrier bundle应该会好：https://www.reddit.com/r/USMobile/comments/1ihxnbr/comment/mb0wju6/