When it announced the Galaxy S5 this week, Samsung pleasantly surprised the audience at MWC 2014 with the phone’s battery performance. The device packs a 2,800 mAh battery that the company claims can deliver 11 hours of video playback or 10 hours of web browsing over LTE. Samsung’s press materials also say that the phone can offer 390 hours of standby time with LTE on, and 21 hours of talk time over WCDMA. Furthermore, the company unveiled a new software feature for the phone, the Ultra Power Saving Mode that can offer 24 hours of standby time on a 10% battery. With the battery saving mode on, the phone’s display will show only black and white colors and offer access to only