So on my trip to Malaysia, I'm thinking about getting a prepaid sim when I get there. I don't really need the ability to phone but I would like it to have data.

I want to use it to use Google Maps to navigate around, call home and do some emailing / web browsing in the evening etc. I don't anticipate I'll be using a whole lot of data.

I also notice that some of the places I'm planning to stay in Georgetown Penang has some reviewers saying the wifi is down a lot.

So I guess the question is if I get one a prepaid sim card, r the mobile networks reliable enough that I'll be able to use it on the go and also not need to rely on the wifi? Esp. in Georgetown Malaysia?