We found call quality on the Nokia X3 not quite up to the usual high standards we expect from Nokia handsets.
Outgoing calls were often muffled and audio sometimes ropey even in areas where signal strength was good.
It was surprising on our review sample, as we usually have no problems with Nokia's high standard calling performance. For instance, the Nokia 5530 XpressMusic is not that much more expensive, but has a much higher level of call quality.
We tried the phone in a number of places with varying signal levels, and its performance was average at best.
Volume level was good enough, however – it can be cranked up enough to cope with noisy urban conditions.
The keyboard is perfectly manageable for tapping out numbers, and the typical Nokia Series 40 phonebook allows for numerous bits of contact information to be stored for each entry.