Can I put my t-mobile sim card into an iphone?

I have an older phone. T-mobile is the service provider. I have a plan that gives me lots of texting and minutes with no data.

So can I buy an iphone (or maybe another smartphone) without the service, and then insert my t-mobile sim card into it and still get the texting and minutes, and also get wi-fi?

Can you completely block an iPhone app?

This is going to sound stupid I'm an adult and I have self control to a certain extent but I can't help my self with this app I want to make sure I can't ever download this app again.

I know this might sound weak but I have deleted it once before.

Any help?

Music On Macbook isn't on Iphone?

I just got some music on my computer but it isn't showing up in the itunes library on my iphone 4.It was an mp3 file I put into my library so maybe it didn't work right? I know they are synced, so shouldn't it be automatic?

My Iphone is stuck respringing

The circle just keeps going on and on! Most importantly, my lock button is spoilt and can't be used! Therefore I could not force shut down it! Now the loading circle just keeps circling! May I know if I have any other way of fixing this other than letting it load till the battery runs out? Because my battery before it became like this is 80%. Please do respond to this question As soon as possible! I need my phone!