http://news.softpedia.com/news/Guide-Fix-iOS-7-Keyboard-Lag-on-iPhone-4-385447.shtml
I have a 5s, so I have no idea if this works or not. But most of the comments are very positive. Let me know if it works!
I have a 5s, so I have no idea if this works or not. But most of the comments are very positive. Let me know if it works!