Where to start.
Accuracy and responsiveness of touch screen: terrible.
Speed: fair at times.
Okay, so about 4/5 years ago I had a Sony Ericcson which at the press of a button would transfer images and videos from the internal memory over to the SD card. This isn't the case with this phone, you manually have to transfer the files. Very annoying. Another complaint about the internal memory is the fact that it's too low to update the software. Once the internal memory is full, you also cannot access the media files to delete them, therefore the only way to make space on your phone is to manually go into the files via the PC and delete them that way. For battery, I need to have a charger in my car and in work to keep the battery at green. When it hits yellow, it's a swift decline to the battery being dead.
Texting is horrible, some letters overwrite each other because the phone cannot keep up with the speed my friends or I text at. When I receive a text, there's a little notification at the top left of the screen. This disappears after you read the LATEST unread text. So that means if you have an unread message that you received before another text that you HAVE read, this notification doesn't display, therefore you do not know you have received a text before the most up to date text. This is a problem for times when you need your phone on silent. It's a little complicated I know, but I've missed important texts due to this little notification not displaying when I have an unread message.
I can go on, so I'll leave it there. Please do not purchase this phone, it's defective as a whole in my opinion. I can't even find anything that's good about it, it's just got bad aspects of the essentials in a typical smart phone.