This is a 2G/3G phone, but with 3G more or less switched off in the UK it will roll back to 2G. So, calls and texts are fine. Bear in mind this runs Android 4.2.2 so not all Google play apps will still be be compatible. The handset is unlocked but will not work on 3UK (unless 3 still have 3G in your area) or any of its partner networks like ID Mobile and Smarty as 3UK do not have a 2G network.
If you're buying or using overseas just double check whatever network you will be using still has a 3G or 2G network.
Comes supplied in the original box with 3 pin UK charger and user guide. Spare battery/flip cover also enclosed.