A:
Maybe if you were more specific as to what is slow about your phone, you might get more specific answers.
If you're referring to apps or the interface, this phone has a dual-core 1Ghz processor. Therefore, the interface and apps won't be as fast as more current quad-core phones.
If you're referring to Internet connectivity, it's a 3G phone which is quite a bit more limited than 4G LTE phones. Wi-fi connectivity should help offset that if you have access to a decent Internet feed wirelessly.