Hi everyone, my problem is that the multitasking button does not work properly and I can not return to recent applications. The home and back button work perfectly, I tried a hard reset but the problem is still present. The most annoying problem is that sometimes the button works alone without me touching it, it works again for 12 hours and then suddenly it does not work anymore. I think it's a hardware and not a software problem, I think the only solution is send it to assistance. Has anyone else had this problem?