Is anyone having issues with the iphone 7 external speaker? I thought since it's stereo speaker now, it would be louder but I'm having issues. When I play the ringtones or play voice msgs through the wechat texting app, the audio start out low in the beginning and then increase in volume. It's never a consistent loudness. The volume is on max and I checked if the speaker are dirty/has debris. Not connected to bluetooth and already hard restarted 3x with no improvement. Also updated to the latest IOS. It's only a 12 day old iphone 7 that I gotten from tmobile. Is anyone having this issue? Is it considered defective? I'm not sure its a convincing story and that they will let me exchange for a new iphone 7.