Tmobile iPhone 5 family plan?

I just got the tmobile iPhone on a family plan but I actually gonna sell one of them and I wanted to know if I do that will both of the phones turn to a bad esn phone and also I wanted to know if a phone does turn to have a bad esn can you still keep your same number?

Hey angel i will cut & eat u

  • Why does my iphone 4 show 3G instead of 4g when I pay for 4g on tmobile family plan? I get 500 mb of high speed data then after the 500 mb of data it goes to 3G but my iPhone 4 just shows 3G. The whole T-mobile plan is unlimited texts calls and data but the first 500 mb of data is 4g, is the data speed the same but it just shows the 3G symbol or is my phone not supported for 4g
  • Upgrading to an Iphone with family Plan? I want to upgrade one our family plan lines. Currently we have 4 lines and we 700 anytime minutes with unlimited texting we pay 120 a month. I wanted to upgrade and get the new iphone. Can anyone tell me how much more its going to be per month?
  • Switching iphone 5 tmobile to family mobile? I was wondering if you were able to switch an iphone 5 from T-Mobile to family mobile because i used to have an iphone 5 on family mobile but it broke and i can only find an iphone 5 for T-Mobile.
  • Iphone 5 on an AT&T family plan cost? I want to buy an iphone 5, but i was wondering how much it would cost a month. What i would like included: texting calling (i don't call much) Wi-fi My mom has an iphone so if i got one, it could work for a family plan right? We have AT&T if that helps. Thank you! If you can put how much each thing above costs separately, that would be great! I also heard you have to pay $10 the first month because of the addition right?