ATF Textures (PVRTC only) don't work on my iPhone 5

Hello there
Today i was testing out ATF Textures for my Game, but when i make an ATF Texture (PVRTC only), the App hangs on the Splashscreen and won't even go to the main screen.
i used the following command to generate my atf texture: png2atf -c p -i test.png -o test.atf
Then i tried with an ATF Texture that has all 3 formats in it (PVRTC, DXT1/5 and ETC1), wich works.
So after trying arround for an hour i made an ATF Texture with only DXT1/5, wich worked on my iPhone too (weird huh?).
Everybody is saying that PVRTC is for iOS, but it doesn't work for me. DXT1/5 works... anybody know wtf is wrong? xD
Thanks for your help!

Hello there
Today i was testing out ATF Textures for my Game, but when i make an ATF Texture (PVRTC only), the App hangs on the Splashscreen and won't even go to the main screen.
i used the following command to generate my atf texture: png2atf -c p -i test.png -o test.atf
Then i tried with an ATF Texture that has all 3 formats in it (PVRTC, DXT1/5 and ETC1), wich works.
So after trying arround for an hour i made an ATF Texture with only DXT1/5, wich worked on my iPhone too (weird huh?).
Everybody is saying that PVRTC is for iOS, but it doesn't work for me. DXT1/5 works... anybody know wtf is wrong? xD
Thanks for your help!

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