Welcome to the Apple Support Communities! I understand you're having some trouble getting your Beats to connect to your iPhone, and I'd love to help you with that. First off, resetting the Beats is a great way to start troubleshooting, so good call there. You should also make sure the device you're pairing with is up-to-date. If it isn't, you'll want to back up beforehand to ensure there's a secure copy of your data, then go ahead and update: Update your iPhone, iPad, or iPod touch - Apple Support
It would also be a good idea to test your Beats with other devices, and also other Bluetooth devices with your iPhone. If no Bluetooth devices are connecting to the iPhone, it means we should focus our troubleshooting there. On the other hand, if the Beats won't pair with other devices either, we'd need to look more closely at the Beats. Give that a shot and update the thread with your findings so I can give you some next steps from there.