Hi
What clues do your phones provide to tell you it's time to upgrade to a newer phone
Have a iphone 4 and it's doing following
battery doesn't last now
caneras not best
Closes out of apps for no reason internet crashes
sometimes it's very slow on internet what makes iphone5s on better with that
There's no more updates and all apps now need newer operating system than iphone4 can take
Won't name rest of problems as list is too big otherwise
What can you do to get your old iphone4 to hang on a bit longer and have trouble free internet and be able to have some new apps if you can't afford a iphone6 yet due to other expenses
Read more: When is it time to update to a iphone 5s onwards from a iphone4?