Never use these types of SIMs!
junk sims are a method for criminals to take advantage of and commit illegal acts such as calling and texting impersonating authorities and defrauding and appropriating property.
Tags : check subscriber information
Guiding to check and supplement VinaPhone subscription information to prevent one-way locking at home
in the following article, network administrator will show you how to check if your subscription is in the right update and how to update online.