The display has made a good impression and has swiftly responded, but it could be a bit brighter for outdoor use.
The USB cover is already extremely tight, had arg pry with your fingernail - of course good that it is so tightly sealed, would have only a little concern that not too long will (get and where replacement?).
Otherwise: Be careful when turning on, the thing has plays when booting a "melody" from which so sounds as if a pair of hand grenades go off - have also here found no way to stop this, so better not turn on the plane ...
About battery life I can not tell for returning.
Otherwise: Has the money for a solid and decent impression made if it were not for the lack of camera button, I would have probably kept. In addition to the CAT B15 (the no Taschenlampenfuntion has, has a smaller battery and ne whole corner is more expensive), this is currently the only extreme-rugged smartphone that ships from Amazon to my knowledge.
Those like me who value on camera button and the shipping from the Far East is not afraid, perhaps should the "Land Rover A8" (4 inch IP67 Waterproof 3G Rugged Android 4.2 Smartphone 1.2GHz dual-core dual SIM Dustproof Shockproof capacitive screen GPS 5MP A8 (yellow, black, green, blue)) - All of the probably one that has a slightly smaller screen and a minimal bigger battery (together making probably even longer standby time).