New answers tagged hardware-requirements
Yes, without compass, your experience is incomplete, you needed it for know the way to follow the pokemon, but AR works fine.
I had a similar issue- but do not worry! Your device can grab your location using your mobile data/Wi-Fi. Its less accurate than the GPS, but it certainly works.
http://source.android.com/compatibility/android-cdd.html#7_6_memory_and_storage now contains the following table: I could not find a per-Android API version requirement: the display size is the defining factor there. Web archive link.
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