centrifuge41 wrote:Cheapest plan? Buy a used AT&T iPhone (say, a 3gs or iPhone 4). Go on Straight Talk Sim and buy a $15 AT&T compatible sim. This lets you use the $45 "unlimited"* talk/text/data straight talk plan (AT&T network) on your GSM iPhone.
*Just don't exceed ~100MB/day or ~2GB/month of data usage, or you might get warned.
I am a rather light user of my cell phone and even lighter user of cellular data on my phone. I only use cellular data on the road when no free wireless available).
Here is what I have done to keep the cost low.
I accepted a gift of an 'outdated' iPhone 3 from one of my adult kids who 'needs' the latest and greatest iPhone when available. Then bought an unactivated AT&T Go Phone sim card for a couple of bucks on Ebay. I activated the phone on the ATT Go Phone web site and signed up for the $25 pay-as-you-go plan (250 minutes and unlimited messagges). I then added a $25 data package (1Gb). As long as I keep my account active by refilling the $25 pay-as-you-go plan, the data will rollover month to month. The 1GB of data will last me 4-5 months or more, so for approximately $30/mo a get all the talk time, messaging, and data I need.
Up until a few months ago one could do the same thing on their 10 cent a minute pay plan and just add $5 (50MB) of data each month but that no longer works.