Chosen Solution
Anytime I’m on Facebook or playing a game on my iPhone 4 the app will all of a sudden quit and my screen will go black for a few seconds before showing home screen. My phone is also super slow, can’t watch videos or read articles sometimes and the sound doesn’t always work. I’ve tried deleting things from my phone and cleaning the headphone jack and speakers of dirt. The problems persist. What can I do? My phone is old and I cannot afford a newer one or to take it to a repair place since it no longer has a warranty.
The iPhone 4 is 5 years old now and will have a hard time running apps due to hardware limitations. Try force closing apps running in the backgroung, this may help your crashing issue. DO this by double clicking the home button and swiping the apps up to close them. If this persists try a reset by holding the home and power button down for 10 seconds. In regards to the sound issue, your dock connector can cause these issues, check it for dirt and corrosion. It may need a cleaning as well.