NO each one of those carriers have a different system and phones are not compatible with one another. One carrier is CDMA the other is GSM.
No, OTA Rootkeeper will not work with your T-Mobile Galaxy s3.
There are five major cell phone providers that carry this brand of cell phone. Those providers are Verizon Wireless, AT&T, T-Mobile, Sprint, and US Cellular.
279$
no
Yes, you can use a Samsung Galaxy S3 or S4 that is on AT&T or Verizon network on a Straight Talk plan. You will need to unlock the phone before switching providers.
Since Cricket was recently acquired by AT&T, your Galaxy S3 would need to operate in both CDMA (its network prior to the acquisition) and GSM (AT&T's network). You would also need to unlock and root the phone to make it usable on multiple networks.
Sprint and T-Mobile are under two different mobile networks. Sprint uses CDMA, T-Mobile uses GSM. So, to answer your question, unless the Galaxy S4 Mini has both mobile networks built onboard, it won't be possible to flash it.
The S3 is currently not available on the prepaid plan for T-Mobile. You'd have to buy the unlocked version for about $550 and insert a T-Mobile prepaid SIM. The S2 is available at Walmart for prepaid T-Mobile for $299-$329.
The Samsung Galaxy Blaze is only available on the T-Mobile network where as the S3 is available on various networks. The Blaze has Android 2.3 operating system but the S3 has the much later version 4.1. The S3 is a much better phone. It has a better camera with more features than the Blaze. The battery life is longer on the S3 and the screen is larger which allows you to view web pages and apps with ease. You get a lot more storage with the S3 than the Blaze as well as many more features.
It never did. It was only available unlocked from Google, "locked" on Verizon and Sprint.
No. Sprint phones cannot be used on T-Mobile, unless they have a SIM card port.
At&t, sprint, and verizon but i would reccomend verizon because at&t and sprint have the worst service