Installation instructions for JAVA games:

1: When installing a JAR program game, the JAR file name cannot contain Chinese characters, otherwise it will not run. Please change the file name to English or Pinyin before installation. .

2: When installing some JARs to the memory card, the installation progress bar stops at 80% or the system crashes, but it can be installed into the phone's memory. Generally

The compatibility of the memory card is not very good. It is recommended to format or replace the card.

In addition:

When a "certificate error" occurs during JAR game installation, you might as well try this method:

As you know, JAR games do not require signatures , but a "certificate error" appears

It should be a conflict between the certificates that come with the phone. That is, maybe you installed a certain software on the E drive, and it came with a certain certificate, and the machine Only the certificate of the C drive is recognized, so a system error occurs. (But the JAR can be installed in the mobile phone) It means that the JAR may not support the installation of this model, and it is most likely a problem with the memory card.

The solution is as follows:

After connecting the memory card to the computer, find the properties of the memory card (right-click the last one)----Tools----run defragmentation (general questions are here) Solved) You can install the JAR software! If it still doesn't work, take one more step, find the properties of the memory card, right-click → Properties → Tools → There is a bug check (check) → and then check the automatic repair option (another Don’t hit anyone! ) → Then scan and wait for him to finish checking

...The problem should be solved!