BB 7100i hepl!!!!!

[tfort00]

I have a BB 7100i flashed to Boost. I can only reply to text messages and cant seem to be able to access the net completly, meaning practicaly no downloads are successful. I have Opera mini and bolt browsers that work fine, but the BB browser doesnt seem to work as well. I can access the net but not like opera or bolt. I bought it from ebay and the dude I bought it from helped in the beginning and even reprogrammed another phone and sent it to me but now he's avoiding me like the plague. The phone and walkie talkie work but I want to be able to semd any contact an mms without having to reply.....