I'm currently using internet tethering with Digi 3G unlimited (rm58) to my laptop and download speed is a constant 1mb. Havent test tethering with EDGE yet but from speedtest app result, i can only managed to get around 100kbps to 120kbps download speed. upload speed is awfully slow tho, but its still ok to use with iphone. with laptop, u have to be very patient