battery swap

Hello Apple pros, Long story short, my iPhone 4s was sitting unused for a week on a shelf, and when I checked it to see if it needed a charge, it was swollen. The back and display split from the body. Apple wants me to pay 30 euros (I could find a 4s for 45 euros) which is too much, so I will...

Hi everyone, After I've swapped battery on my iPhone 5 I experience vertical and horizontal lines after aprox. 10-15 sec. of use, then the display freezes. The lines/freezing seems to appear faster if I use a graphic intensive app rather than (for instance) Messages. And if I swipe a lot...