#90 Mobile Phone Hoax
Home Hoaxes Mobile Phone Misinformation – XALAN and #90 Hoax

Mobile Phone Misinformation – XALAN and #90 Hoax

by Brett M. Christensen

This report was first published in November 2005.

A would-be warning, which has been circulating since at least 2005, claims that scammers are hijacking mobile phones by tricking users into pressing a specific combination of digits. A variant of the message claims that terrorists rather than scammers are using the trick in order to make calls at your expense and frame you as a criminal.

Some versions also warn you not to answer a call that displays “XALAN” on your phone screen because answering will infect your phone with a virus.

Warning is an Old Hoax

However, the warning is a hoax. None of the information provided in any versions of the message is in any way valid for mobile phone users.

The first part of the hoax email claims that pressing #90 or a similar combination of digits will give a fraudster or terrorist access to your sim card and allow him or her to make calls at your expense. This is untrue and has been denied by Australian telecommunications giant, Telstra, South African communications company, MTN, and other service providers around the world.

This part of the hoax is derived from earlier, partially factual, warnings about scammers who try to use “90#” to hijack fixed line phones. Such a scam is possible on certain types of business telephone switching equipment that requires users to dial “9” to get an outside line. However, mobile phones are in no way vulnerable to this scam. It is not possible for a scammer to hijack your mobile phone by getting you to key in #90, #09, 90# or any other such combination of digits.

XALAN Virus Warning Is Also Untrue

The information about the supposed “XALAN” virus is also untrue. Although mobile phone malware is certainly a growing threat, there is no virus like the one described in the email message. There are a number of alternative versions of the “warning” message, some of which list the word displayed as “UNAVAILABLE” or “ACE” rather than “XALAN”. Again, Telstra, MTN, and other providers have denied the existence of such viruses.

Note that “terrorist” version of the hoax also sometimes appears at the bottom of another misleading message that warns you not to return missed calls from numbers starting with +375 or +371.

Don’t Press
#90 or #09
on your Mobile when asked by any caller.
It’s a New Trick of Terrorists to access your SIM card, Make calls at your expense and frame you as a criminal.
Forward this message to as many friends as U can, to stop it.


Dear All,If you receive a phone call on your mobile from any person, saying that, he or she is a company engineer, or telling that they’re checking your mobile line, and you have to press # 90 or #09 or any other number. End this call immediately without pressing any numbers. There is a fraud company using a device that once you press #90 or #09 they can access your “SIM” card and make calls at your expense. Forward this message to as many friends as you can, to stop it.All mobile users pay attention if you receive a phone call and your mobile phone displays (XALAN) on the screen don’t answer the call, END THE CALL IMMEDIATELY, if you answer the call, your phone will be infected by a virus..This virus will erase all IMEI and IMSI information from both your phone and your SIM card, which will make your phone unable to connect with the telephone network. You will have to buy a new phone. This information has been confirmed by both Motorola and Nokia.PLEASE FORWARD THIS PIECE OF INFORMATION TO ALL YOUR FRIENDS HAVING A MOBILE.

Importance Notice

After considerable thought and with an ache in my heart, I have decided that the time has come to close down the Hoax-Slayer website.

These days, the site does not generate enough revenue to cover expenses, and I do not have the financial resources to sustain it going forward.

Moreover, I now work long hours in a full-time and physically taxing job, so maintaining and managing the website and publishing new material has become difficult for me.

And finally, after 18 years of writing about scams and hoaxes, I feel that it is time for me to take my fingers off the keyboard and focus on other projects and pastimes.

When I first started Hoax-Slayer, I never dreamed that I would still be working on the project all these years later or that it would become such an important part of my life. It's been a fantastic and engaging experience and one that I will always treasure.

I hope that my work over the years has helped to make the Internet a little safer and thwarted the activities of at least a few scammers and malicious pranksters.

A Big Thank You

I would also like to thank all of those wonderful people who have supported the project by sharing information from the site, contributing examples of scams and hoaxes, offering suggestions, donating funds, or helping behind the scenes.

I would especially like to thank David White for his tireless contribution to the Hoax-Slayer Facebook Page over many years. David's support has been invaluable, and I can not thank him enough.

Closing Date

Hoax-Slayer will still be around for a few weeks while I wind things down. The site will go offline on May 31, 2021. While I will not be publishing any new posts, you can still access existing material on the site until the date of closure.

Thank you, one and all!

Brett Christensen,