pwede mo naman ikabit pareho yun pero keep in mind only one will be used by your programs. (i.e. firefox). you can either set programs settings individually such that it will follow a hierarchy of connection options. so that in the event that one is down, your program will use the other connection
however, this is time consuming (for less hassle, you can get the high end routers with load balancing feature) and may only result in you paying for an internet connection that you do not use (the second one). so if you want advice, I would say don't do it anymore
I would advice this instead. get a smart sim, a nokia phone (series60v2 or higher) with data cable, and install PC suite.
if ever your main internet connection is down, attach your phone to your pc with the data cable (PC suite should be able to detect it). then open PC suite, select connect to the internet. you now have a backup internet connection and it will only cost you P10 per 30minutes. keep the phone plugged to the charger if you plan to stay online for a long time (more than 1hour).
