Yea, you are right. The sim registration is very important and must to do after the SIM registration act. You must regsiter your SIM no matter whatever network you are using. I am TM sim user and registered the TM SIM a few days ago and want to share the registration process for TM Globe SIM card: Visit the TM SIM Registration website. Enter your TM mobile number. Verify your number using the OTP sent via SMS. Fill in your personal information. Upload a valid government-issued ID. Take or upload a clear selfie. Review your details and submit the form. Wait for the confirmation message that your TM SIM has been successfully registered. If you are uncomfort with Online process, visit the help center and get your SIM registered with personal assistance. But lost of users say that their network is not working properly after the registration. It is due to the wron APN settings. Follow the APN for TM settings and get a fast network connection. It is the only and best working solution to slow netwrok issue.