Airtel Blackberry Complete Plan Increased to 3GB for N1,400

Most telecom company seems to be sitting up this days, though I don't know what is ahead. Barely five (5) weeks after airtel discontinue the 1+1 Android offer that gives you 4GB for 2K or 9GB for N3,500 ; they just introduce another upgrade on their existing Blackberry Complete plan.

According to the text airtel NG sent to me, it says "1GB Monthly Blackberry Complete plan now becomes 3gb and the still N1,400 valid for 30days…
Usable on Blackberry devices ONLY" Initially, this Blackberry Complete gives you 1GB for N1,400 and it works on all device. But now that it has been increased to 3gb, something seems to be fishy somewhere.

How Can I Subscribe to This Plan?
Dial *431# to subscribe.
Does it work on other Device? It has not been tried on any device. Though their last text says 'Valid on Blackberry Only' but I believe when tried on other devices, it will work. The year 2015 is still fresh and they should keep up the good work, but hope this doesn't zap data as usual? If not, I comment my reserve