I think your assembly process is not accurate. You can watch this video:
https://www.youtube.com/watch?v=qr7KfNbbDtQ
Have you set the highest audio volume?
Have you set a MP3 ringtone for your rephone?
I think your assembly process is not accurate. You can watch this video:
https://www.youtube.com/watch?v=qr7KfNbbDtQ
Have you set the highest audio volume?
Have you set a MP3 ringtone for your rephone?