Also with me occurred the same problem with the battery since the first day.
Reputedly the best "battery of mobile world" made flabby after 3-4 days, even without great to have the phone with them. The answer I have only learned from Sonim support from USA via email - and lo and behold:
the battery will last 15-16 days by problems and I telephone very much.
In the menu item "Extras" the GPS sub-menu must be set to OFF. Then turn off the phone and turn it back on - that's all. As it were easy, only it is necessary to know first.
I am very pleased with my Sonim XP3 Quest for 5 months - as a carpenter, it is me already fallen twice from the roof (height 6-7 meters) and the Sonim is completely waterproof, which I tested in the bathtub (not a joke).
The software works fine, but I do not use the Internet browser.
The Bluetooth connection to the PC and the headset in the car are completely unproblematic with me.
The only drawback: a PC data synchronization or backup is using the supplied Sonim software (Mobile Phone Tools) neither via the USB cable still possible via Bluetooth, there is no connection on the "interface" is concluded (neither Windows XP nor Windows 7) ,
The lack of "driver software" is criticized and this there is neither the Internet nor in Sonim even downloading. Even with paid programs like Driver Detective you do not get the problem solved.
Conclusion: the XP3 Quest there are sometimes starting at 310 without a contract. I am very happy with this phone as it has up to trifles my expectations completely and annoying software problems like Nokia, Samsung and Sony Ericson are never occurred. And the best part is: the part is really indestructible - advertising, which upholds times what it promises.
The guarantee is 3 years and the voice quality (at least in the D1 network) is excellent. Hence my recommendation to buy the currently best outdoor mobile world. Unfortunately, only 4.5 points since Sonim in detail should further amendments, which will certainly happen soon.
