APPLE IPHONE 4 Is really a Good phone. I have it for near about 5 years. It was really worth the money. The life of battery become shorter and it doesn’t vibrate anymore. As the manufacturers company APPLE releasing new techonlogies everyday - and consequently, app developers, it is really difficult to carry on with such an old iPhone and slow iOS. Its time to change, I guess.Now, I have iPhone 7s. which have lot of new and exciting features.
The features, performance and its design was very good and I still like this iPhone.
I also recommend this iPhone for you.