Hi. I have an LG Motion on MetroPCS and it's been working fine, but the screen is damaged. To replace this Motion is $100, and the LG F6 is $200. Has anyone here tried both of these models ? If so please compare and contrast them so a decision can be made between these two models. The F6 on MetroPCS has much less internal memory compared to the Motion. Can this really be overcome by using an SD card and still get the same performance as if the memory were internal ? Can the same SD card be used for backing up the data while it also has the apps and other data which would normally reside in the internal memory ? Or does one replace the SD card when doing a backup, such as with Super Backup app ? How's the call quality, speakerphone, and camera on the F6 ? Does one get better reception and/or a wider coverage area because the F6 is GSM ?