Lenovo introduced their Budget smartphone Lenovo A6600 in India which has similar specs asCoolpad Mega 2.5D and Moto E3 Power . Check out Price, specs, features comparison

On Display all devices comes with 5-inch HD Display powered by a  1GHz Quad-core MediaTek MT6735P processor. On RAM Lenovo A6600 has a 1GB RAM , E3 Power comes with 2GB RAM where as Coolpadd Mega 2.5D feature a 3GB of RAM , all three devices has 16GB of internal storage which is further expandable with MicroSD card.

Connectivity options include 4G VoLTE, WiFi 802.11 b/g/n, Bluetooth 4.0, GPS and runs on Android Marshmallow out of Box. On Battery Lenovo A6600 has 2300mAh Battery ,Coolpad Mega 2.5D is packed by a 2500mAh Battery & 3500mAh Battery on Moto E3 Power
…
Read full post here:
https://www.techupdate3.com/2016/09/lenovo-a6600-vs-moto-e3-power-vs-coolpad-mega-2.5d.html