Yota Egg (also called Interbro iWWR-1000R) — an autonomous mobile gateway between WiMax and WiFi wireless networks.
Yota Egg is a battery powered mobile WiFi access point, that connects to the IEEE 802.16e wireless networks (Mobile WiMax), designed to provide Internet access to the devices without a WiMax adapter.
The egg is for data only. If you want to make calls to a fixed line or mobile, you'll need to rent a phone with SIM or just a SIM card.
The plus point is you can share.
You can use online apps to make calls if you need to.