Regarding the signature, I think it's ok to apply at the Mobile Home Forum (it's super simple ~ ~ I suggest not to go to Saipan Forum, which seems a bit complicated). The general process of applying for a certificate is: click the certificate application on the title of the home page of the Mobile Home Forum, enter your serial number, and then enter this forum 12 hours to check your certificate. Then you can see a mobile phone home assistant V 1.5 next to it. Click Download and go to Saipan Forum to download this software (I must have seen it a few days ago). After downloading, turn on the mobile phone home assistant V 1. .5 Press the browse button to view the newly downloaded software, click, then press the signature, and then install the signed software into the mobile phone. Actually, it's not complicated ~ ~ take your time. It is very important for this smart machine to learn to sign, because there are many softwares that need to be signed! These are my hard words (certainly not copied from others, if you see the same answer, it is my answer! Hehe ~ ~), I hope I can help you, and finally I wish you success.

You have to download this software (personally, I suggest going to Saipan forum to have a look. There is a direct version, and there is no need to install font drivers or anything, which is very convenient). Generally speaking, this software has several parts. You need to download all of them, then unzip any one (right-click unzip), and then sign it and install it in your mobile phone (note that you have to restart it to see the font change).