I bought a 400 on Sunday brand new. The sound is horribly bad and the battery last 8 hours
The battery life is amazing. You can use this with heavy use for 2 days without recharging. If it's battery gets low to 1% , don't panic. It'll hold for about 6 hours even with wifi on.
Very good for rough use. But otherwise it is just a basic android phone. It cannot perform smooth performance because of the 512Mb ram. It has a small screen and little hard to read texts on the main menu icons. Also this is a very heavy phone, you can hit a man on his face with this and he'll start bleeding.
I didn't try to check it's shock-proof or water-proof ability. But I'm pretty sure it can defend against anything. The whole casing made with rubber, so it has a strong grip also.
This is very good mobile, as a sri Lankan,I haven't facility of GPS,function on it.y it is not properly works in Asian countries,so that this mobile not fulloptionable to me,suddenly it is turn of when it goes over heating level,otherwise this good 4 hard use
Better than the 240 100 and 200 bit worse than Energy 500 yess more megapixels than any other Energy 200 100 240 and runs Android. 4.5 Stars
As of 20/1/17 my phone is under investigation as it appears to contain preinstalled malware from ADUPS in China. If you have one of these my advice is to check it out carefully. Google Adups malware BLU phones.