Will my iPhone die soon/ completely give out?

I've had the same iPhone 4 since 2011, will the battery give out soon or will the backlight/ touch sensor die first?

Considering it's an iPhone, the battery would give out first (given that you haven't dropped it too much)

Like the other answer said, you should just upgrade.

Could be a while again before that happens, if it ever does. There are people still with the original iPhone running fine. Of course can't do much with it anymore since apps require better hardware, but the phone still functions as it should.

Despite this though, no harm to get a new phone.