There are 2 things you can do.
1.
If your tiered data plan line has an upgrade available. You can upgrade on that line and the contract will get extended for 2 years.
When the phone comes you activate it on the tiered data plan that you ordered it on, make a couple of calls and than check the website to make sure it is showing the new phone on that line.
Now you can re-activate the old phone back onto the tiered data plan line on the website by taking the sim card number from the old phone and putting it back onto the tiered data line.
You just click on change sim card and it will walk you through it.
After putting the old phone back onto the tiered data line you now have freed up the new phone to be activated on a different line.
You can now do a sim card change on your unlimited data line with the sim card from the new phone and activate it on your unlimited data line.
You now have your unlimited intact and a new subsidized phone on the unlimited line.
2. If your tiered data line is not eligible for an upgrade you can do what is called a buddy upgrade.
You click on upgrade for the tiered data line and it will take you to the upgrade options page for that line.
Under upgrade options you click on the drop down & select buddy upgrade, press continue.
On the next page you select your unlimited data line phone number that is eligible for the upgrade, than continue. Select phone etc.
This will extend your contract on the unlimited line 2 years but not change your unlimited data as you are not getting the upgrade, your tiered data line is.
When the phone comes you activate it on the tiered data plan line that you transferred the buddy upgrade to, make a couple of calls and than check the website to make sure it is showing the new phone on that line.
Now you can re-activate the old phone back onto the tiered data plan line on the website by taking the sim card number from the old phone and putting it back onto the tiered data line.
You just click on change sim card and it will walk you through it.
After putting the old phone back onto the tiered data line you now have freed up the new phone to be activated on a different line.
You can now do a sim card change on your unlimited data line with the sim card from the new phone and activate it on your unlimited data line.
You now have your unlimited intact and a new subsidized phone on the unlimited line.
This works because you activate the new phone on the tiered data line and move the new phone after activation to another number on your account. So you have met the obligation for activation and kept the phone on your account just different line.
I have done both of these methods in the last 3 weeks to get 2 new Droid Turbos on my unlimited lines.
