Tnx sa shareJUST SHARING THIS SIMPLE TRICK !
I always suffer a weak signal and always ako nag llost connection . Even i have full bar signal . i tried random apn settings etc . But it didnt work until i edit my DEFAULT apn settings . And BOOM even Edge signal fast load sa coc , browsing , downloading and môviês . Try it guys nothing will lost i hope this method will work for you . See Screenshot Below .