No, however i beleive you can install flash player from adobes website. I do know for a fact that you can Google "Flash player downloads for Galaxy S4", and download it, but the phone does not come with one out of the box, no.
Yes you can flash a Samsung Galaxy S4cricket phone T mobile on cellunlock.net.
The Galaxy S4 is not IP67 certified. The Galaxy S4 Active on the other hand does have that certification.
No they are to big
Yes. They have the Samsung Galaxy S4 Active.
Yes, the Samsung Galaxy S4 is a smartphone.
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.
No, but the GALAXY S3 IS WAY BETTER!
No, the Samsung Galaxy s4 is larger than the iPhone.
The Galaxy S4 Active's screen is 4.55 inches.
The Samsung Galaxy S4 was released on April 2013.
No, the Galaxy S4 is not waterproof. If you try putting it in water, it will most likely break. You might want to consider the Galaxy S4 Active, which is a more durable, and more importantly, waterproof version of the standard S4.
No, even if you factory reset the Galaxy S4 it will not downgrade.