Dang! It appears the mother board from my phone is about to say Mortis! So it's time for a new phone. Luckily there are the stores that sell phones in a good sale. It still gives me a sour taste in my mouth that this outcome comes outta nowhere especially when the phone has its important uses such as work, telegram etc. <.< Can't be helped. It was old model of iPhone that it was time to get new one sooner or later anyway.