Keeping an old iPhone is the worst thing to do in today’s world. As soon as the latest model of iPhone launches you should prepare your existing iPhone for sale. By this, we don’t mean that you should keep yourself updated with every launch, this way you might have to forgo certain needs just to spend thousands of pounds on the latest model. We suggest you to upgrade your iPhone as we don’t want you to be stuck with an obsolete model, on which you cannot even get the software updates. In today’s era, iPhone models up to iPhone 5S are considered as the obsolete models of iPhone, as these models aren’t compatible with the latest version of iOS (12.1). So the best thing for you to do right now is to sell your iPhone 6, 6S and 7 to upgrade to a newer or the latest models of iPhone.…