The first phone had a defective microphone inside, however Amazon sent me a new phone next day air. Wow. I do love this phone. It is slick, functional and Nokia is my favorite phone for overall quality. This black e51 does everything good, maybe it tries to do too much. It could be a little bit louder on every phone. Headphone power is good but not my ipod. Speaker is ok, but not loud. It could use a 3.5mm headphone jack like the rest of the planet. The wifi works great, but the menu is a little confusing, and the mail section with yahoo won't let me go on wi fi. It must be just for cell companies. You can just go to the internet and go to yahoo but it takes longer. You can turn off the cell internet to prevent overcharges that's nice. Please understand I do love this phone I'm just being critical. Trust me you will baby this phone, and want it back in your hands when others look at it. Unless I'm just obsessive compulsive. Great screen clarity. The music is clear, and makes great ringtones too. It looks basic yet modern and is high quality throughout. Amazon's quick response made me a loyal fan. You will not get the same treatment from best buy or any other electronics big store.