You can move apps to SD card, buy you need to root phone first and install app such as Apps2SD.
Hi louis. You can download the manual from the Samsung Galaxy Ace II X product page. Just click on the link located on the right hand side of the page to start your download.
Hi crystal. You can try doing a factory reset. But if it's still the same after you do that, I suggest you just return the phone and get a replacement, a different model perhaps. It could be an issue with this particular Kyocera model.