Battery Low [Q] Cant make/answer calls mic and earpice works

Ok, this is my problem, I just got the phone, did a factory reset and then I put my SIM, it gets a good signal and 4G network, I installed all my apps and everything was great, but when I tried to make a test call it seems like the call ends, I only hear the first beep and the sound is gone (but the call is still going), I cant hear the other person, they also cant hear me, I've tried Groove IP and it works great, on the earpiece, headphones, etc. both mics work great, I cant get any sound when calling using the dialer, there is a beep and the earpiece sound is gone.

I also get the "Conditional call forwarding active" pop up.

Any insight on this?