Did you replace the display?If you didnt, Don't spend more hours until your phone getting heat.It can maybe a touch screen problem because of heat.maybe should have to replace your touch screen.(not sure)
Just tap and hold the airplane mode.then you will automatically go to the settings.So you can off the airplane mode in there.If it doesn't work Try restarting your device or go to a network reset.Thank you❤
First tap and hold the lock screen before you unlock your phone and the unlock your phone.So you can see customization tools.After that tap the time and choose the 2nd font.Then adjust it's size and drag it near to wallpaper.(You can't set like this ...