T-Mobile $5/month 5GB Data Plan for Grandfathered/Classic Users

So if I buy an S3 through a person (Craigslist) for T-Mobile I can avoid paying $20/month through their upgrade and only pay $5/month through this offer?

I understand that I would be paying more for the phone than free through T-Mobile, but I'm wondering if that would work.

What is the point then?

You buy an S3 through Craigslist but want to save only on the data/internet prices?

Just migrate to a Value plan (given that you can without migration fees), and save on the voice plan AND the texting plan as well.

I think Bridge-To-Voice is only available for those customers who wouldn't be paying migration fees anyway.

I seriously think that Bridge-to-voice is a complete ripoff I don't know how this is getting so many thumbs ups

THIS IS NOT A GOOD DEAL FOR MOST PEOPLE

I was also offered this plan when my contract end date was approaching.

It honestly just doesn't make sense to me. I was currently paying $10/month for Internet on a classic plan. Upgrading to galaxy s3 or newer smartphone would cost me $20/month, and when I balked at that, that is when they offered me the bridge to value. HOWEVER,the plan itself makes no sense. It does not allow you to upgrade phones. Once you upgrade your phone you're still required to pay $20/month. Migrating to a value plan not only lowered my monthly voice plan but also my texting plan. On a bridge to value they are keeping you from upgrading phones AND preventing you from realizing true value plan savings.

For comparison I was paying $120/month after taxes for 4-line family plan 1000 minutes, text, and Internet on two lines. On a value plan I'm now paying $85 for 1000 minutes, text, and Internet in 4 lines. A bridge to value plan would have cost me $110/month for only two lines of Internet, with the same disadvantage as a value plan in that you can't upgrade phones.

Eligibility is you need to be 15 months into your contract.

I think it's 18 months.