This is an email reply from Apple care support person when asked if I can swap phone at Genius bar:
A,
Yes I can definitely set you up with an appointment and they can take a look at the phone there. Now I'm not guaranteeing that they will service the iPhone because sine we've spoken Apple's deemed some issues with reception a non-issue, and something that can be avoided. However, if they determine the phone just simply gets terrible reception, they will definitely service the phone, and get you a replacement iPhone. Just let me know when a good day and time is and I can set that up for you. Thanks.
xxxx xxxxxx
IPhone Specialist
xxxxxx@apple.com
P:877*388*0879 Et*xxxxx
A,
Yes I can definitely set you up with an appointment and they can take a look at the phone there. Now I'm not guaranteeing that they will service the iPhone because sine we've spoken Apple's deemed some issues with reception a non-issue, and something that can be avoided. However, if they determine the phone just simply gets terrible reception, they will definitely service the phone, and get you a replacement iPhone. Just let me know when a good day and time is and I can set that up for you. Thanks.
xxxx xxxxxx
IPhone Specialist
xxxxxx@apple.com
P:877*388*0879 Et*xxxxx