I was thinking of switching back to tmobile. I left a couple years ago because I had the unlocked iphone 4 (att) and the network was not compatible at the time for 3G. Now apparently it may be. I still have the iphone 4 Will I be able to get full 3g speeds? I was looking at a friends phone on tmobile last year and his iphone 4 would randomly pick up 3G here and there as though they were trying to make there network compatible but it wasn't working too well. Will there be taxes on tmobile new plan. I switched to prepaid plan for $45 a month and there are no sales/federal taxes if I buy the minutes online. When I was on tmobile I had almost $10 in taxes, 911, federal charges. I just want to know so I can factor it in before I switch over if I do. Thanks!