Polithiefcian:
And wut if an interview msg, credit alert or oda important msg tries to come in form of spam msg

It blocks msg mostly from shortcodes eg, 5021,5020,33555 but you cAn always view it imediately the msg comes in,cos it will notify you right away.

ITbomb:
Hope say this one no go drain battery

No,it doesnt

Binga appit is an android application recently developed by a concern individual to help combat this unwanted spammy messages.
Ouch, sorry but it currently works on Android devices. It’s designed to actively protect your phone from all unsolicited SMS messages on all Nigerian GSM networks.known as spam.
How Binga App works
==>It is free to download and easy to use
==>It runs in the background to fight every detected spam messages
==>It works on all android phones
==>It does not require any registration at all.
==>It ensures that all your messages are from real people and not telecom robots
How to Download binga App
You can download it herefor all Android and bb10 users.
It's time you put an end to this sms spams from this network providers, and have full control of your line till they do something about it.
It works for all networks.
Source: http://www.niyonice.com/2014/10/binga-app-stop-all-spam-msgs-from.html