See question above - taken from the Wikitude FAQ section.
N
Nicola Radacher
said
over 11 years ago
Unfortunately, the iPhone 3G does not have a compass, which prevents this phone from being able to run Augmented Reality applications like Wikitude. However, as we got so many requests from 3G users, we decided to publish a map-based version of Wikitude. Still, AR features requiring a compass, are not possible.
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