I am retired Army officer living in USA since 1998.I have a bank account in Pakistan where I receive pension and occasional profits from some old stocks held by me while I was living in Pakistan (No full records available. However, all translations are tax deduced at source. I have no other income from Pakistan. Two years ago, I registered as filer using a temporary cell phone I purchased in Pakistan. Now I do not have any record of that cell phone. IRS web site log in cannot be completed without Pakistani Cell number which I cannot get while in USA. Kindly advise me if I can be deregistered from active filer status or get exemption from filing my return