My mobile phone is broken. Can you help me open it?

Hello, do you think the screen is on or off? It should be black all the time and there is no response. Here are some ways to tell you ... 1- If your mobile phone has a non-removable battery, a cell phone room key, a volume increase key and a power-on key, press and hold them for five seconds, not yet, after sale! 2- Take out the battery, connect the charger and check the charger indicator. However, at present, smart phone chargers generally have no indicator lights. Charge it with the charger for five or six minutes before turning it on. If it doesn't work, buckle the battery and directly connect the phone with the charger, and then come back, not yet ... after sale! 3- If you have swiped the computer before, put the new swiping package into the memory card, and then get root permission again. Otherwise, something similar to the program should appear on the screen ... If not, after sale! 4- There's really nothing we can do. You can fall a few times, pat, blow, knock or something, and maybe it will be fine! I hope this is useful to you. Thank you.