When I logged into Facebook today, they informed I had to tighten my personal security. That’s fine. However, when it came to setting up authentication via mobile, be wary of the automated telco service subscription.
Facebook does not charge

Mobile verification is becoming common today. And initial thought was, texting to Facebook wouldn’t give me problems. It didn’t.
But DiGi on the other hand

Note the successful registration. All I did was follow Facebook’s step to text F to 2325. But in return, DiGi tells me I was successfully subscribed to their Facebook mobile service. WTF?! Plus, they would have charged me RM1.00 per week if I didn’t notice this.
Once I got the confirmation code sent to me from Facebook, I didn’t waste time terminating my automated subscription. Because I didn’t want to be subscribed to any service in the first place! This automation has left me a really bad taste in my mouth and impression of DiGi.
So if you’re asked by Facebook to tighten your security like me, and have or want to do the mobile verification, be careful of such automated subscriptions methods from your telco.
By the way, do name your telco if you experienced this.