This very useful phone. It has RAM 1GB which very usrful against other phone. And about exernal it has extended upto 32 GB. It is very slim phone and light weight. And also suitable to releted to price. If it is developing into 4G then it will be hing grading. It’s toughpad has very sensitive screen.but after few uses it would be in hanging out. It has 2000mah.which has long working and fast charging.about that camera it will be satisfaction to people. Hope you developing into 4g. It has 2 aqua core prosecer. Ot may will working long time.it has working very fast. And I have use this phone since 4 years ago. So thank you.