Want to keep or get an unlimited data plan even after June 7th?
- Grab an old iPhone 2G.
- Put your SIM card in it.
- Restore iPhone.
- Activate iPhone on iTunes with the $20 unlimited 2G data plan + 200 texts.
- Hang out with iPhone 2G until the 24th when your iPhone 4 comes in.
If you don't want to use your iPhone 2G or just borrowed one to get the plan back on:
- Go to Phone options and forward your calls to another number.
- Pull out SIM card, leave in drawer.
- Give iPhone back.
- Tell people not to text you until the 24th when you activate your new iPhone 4.
When you activate your iPhone 4, you'll have the option to choose the $15 DataPlus, $25 DataPro, or the grandfathered $30 unlimited data plan.
Have a nice day.