Right. That is why I have asked what recording app Gaea has on his phone. With some apps, it would be pretty hard to claim you did not know you were recording not only your words but the words of the person you called. This makes proof easier.
If, for example, you use PhoneTap, both the person calling and the person called are informed the call is being recorded. If you use GoogleVoice, you must press the number 4 while the call is ongoing - and only incoming calls can be recorded. Other apps have beeps or red lights indicating the call is being recorded.
Depending on the app, therefore, the friend of Gaea might have an awfully hard time claiming he did not know he was recording his own phone call. If he knew he was recording his conversation, the recording would be legal. If Gaea is provided a legally recorded recording, the recording can (potentially and depending on all facts) be used as evidence.
I see there is an misunderstanding here. It is MY phone not his phone. MY phone has the recording app on it and he knows it is there. He uses MY phone when calling some one instead of his. That is what I have the recording. I mean really, why would I put a recording app on some one else's phone?? Think about that. All call recording apps from the Play Store show that it is recording the call. The one I own is Automatic call record. Which ask for the call to be saved. Every time I got my phone back he had all ready saved it. So as I said, he agreed to it.