At its output, the Moto G suffered from a bug on the internal speaker, used for calls. The sound was very low, making the conversation (very) difficult. Normally the Android update to 4.4.4 has corrected this concern on US models. No one bought here because apparently despite the update, it is almost impossible to hear the caller. With the headset, it's good but hello pass the constraint if the Moto G is not usable as normal. According to the returns on many forums, this is not an isolated case. Where a reference to Amazon. I will retry my luck with the Moto G 4G version