Plum RAM 10 VoLTE is a 10 Generation rugged phone from plum mobile. It is factory unlocked and VoLTE. Compatible with every service service provider on the planet EXCEPT Boost/Verizon and any prepaid service that uses there network. It is a simple and easy to use no frills phone. If you need a Simple Talk n Text phone that is easy to start and use Plum Ram 10 is the phone for you that will last you more then any other phone you had. It is IP68 Certified Military Grade, So it is Water, Shock & Dust Resistant. It comes with 1 Year US Manufacture Warranty and a life time US tech support. The phone comes ready out of the box. If you already have service then just remove the activated sim card from your old phone, install it into your new Plum ram 10, then power the phone ON. All set.