After changing the power supply of the mobile phone motherboard, do you still have the short messages stored in the original mobile phone?

You can rest assured of that. Store the SMS and phone number in the mobile phone, and both of them are stored in the sub-library. You can change everything else as long as you don't change the font. So you can rest assured of this. You can ask me if you have any questions about mobile phones. I'm a maintenance worker. If you are satisfied with my answer, please adopt it. thank you