How can I fix it if it broken in half
When I found it it was half broken how will I fix it?
Nintendo's upgraded version of the Nintendo 3DS. It features bigger screens, longer battery life, and a better design.
If it is just the hinge that is broken (I'm assuming that's what you mean by 'broken in half'), then you will need to replace the center housing. It's a difficult process for a beginner, and can cause problems with the system if done incorrectly.
A video of the process:
Most steps in the process are here: Nintendo 3DS XL Touchscreen Replacement
In order to reattach the top screen, remove the shell of the top screen as shown in this guide: 任天堂3DS XL LCD显示屏更换
From there, follow the video I posted before.
Take care to not strip any screws or break any grey flaps connecting ribbon wires to the motherboard. I only say this because those were the two main issues I have had while repairing my system. I haven't been able to resolve the latter, and now my C-Pad is unresponsive, so learn from my mistakes.
If this feels above your current skill level, then I suggest finding an electronics repair center to fix it for you.
45 minutes - 2 hours
1 - 3 hours