Solution: If it is installed in a memory card, then reinstall it in a mobile phone. If not, refresh your phone. This is the best solution. In addition to refreshing the phone, there is another way to patch it by entering the system file.

If it doesn't work on your mobile phone, look for the previous version of Youdao dictionary or update it. If it doesn't work, you have to brush it up. Version history is available in the Android market.