When you dropped it, the main board might have been damaged as a result. Like you said, you're going to probably send it in to a repair shop. But if you can afford one, you might as well buy a new cell phone from your service provider since some estimates start at $100 for repair.

Hey. I dropped my phone at work and ever since then it still turns on but dies after 30seconds of 1st lighting up. As in exactly 30 seconds. not 29 and not 31. always 30. I try to send txts in this time and sometimes I manage to get to the message sent screen. I know im going to have to go to the shop but just wondering if anyone would know whats happened to my phone. other than the obvious of it being dropped haha