I was installed a application form Google play store (4g LTE switcher ) I was selected 4g only . Now no call received and make. Only 4g singnal show . When I select 2g or 3g not selected.only 4g is selected. When I select other 2g 3g not working. I want to resolve this matter like 2g/3g/4g . I have Motorola Droid turbo. I live in Pakistan. Please I am very worry.