iPhone In-App Purchase Store Kit error -1003 “Cannot connect to iTunes Store”

I had a similar situation and dumped the iPhone’s network traffic to see what’s going on. I found that the normal store was contacted instead of the sandbox. It helped to delete the app from the device, make clean and build/install it again. Apparently something with the development profile had gone wrong.

Update: To dump the network traffic of a non-jailbroken iPhone, just use Internet Sharing on your Mac and configure your iPhone to use your Mac’s WiFi. Then tcpdump -n -i en1on your Mac will do the trick.

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