I've installed this app and I've noticed that the browsing is faster and the videos in youtube buffer a lot less. I ran a test with speedtest and it turns out that the download speed increased just a bit, but what increased the most was the upload speed. Anybody else want to give it a try?
https://play.google.com/store/apps/details?id=provision.netspeed.optimizer&hl=en
https://play.google.com/store/apps/details?id=provision.netspeed.optimizer&hl=en