LOLOL!!!! You are right!! They must really want you man!! Get rid of the phone,, get a pre-paid!! lol If its all the apps and wi-fi then you can still get one pre-paid. And for real man,,, dont register it!! And OH,, One question,, Do they actually catch you and take you in,, or do you just think they are there watching you?
How, exactly, is it "noticeable" they are tracking you by your phone? Is there a message popping up every few minutes stating "This phone being tracked by DEA"?
Seems to me it would be more beneficial to you to allow them to track you in order to determine they have the wrong guy, you are not a person of interest and they decide to stop surveillance.
Of course, going "off grid" and hiding in the mountains near the US/Canadian borders may seem to be a more reasonable approach, but it also may bring more scrutiny about WHY you are trying to hide from the DEA.
Are you sure its the phone? May be someone telling on you? Did you find your GPS settings?
Actually the device still transmit a signal that can be tracked as long as the battery is in the device, this is why you hear rumor that you need to pull the battery.... This is why the only way to force a PRL update is to pull battery and sim, as long as power is available it holds a signal connection.
I do not know what you have got into to have the DEA track you in the manner you reported (Also I do not want to know) but as long as you as communicating in a digital form you are leaving a digital footprint directly to you...
My suggestion is reevaluate whatever you got going on...