Now with 700 min plan 69.99 + data 30+25+50 + 20 free sms and M2M after discount I pay 168.17 before taxes. 168.17*24=4034.13 per 2 years
Let assume I upgrade every 2 years
With subsidy:
iphone 6 128 is 399 dollar*3 =1197 +4034.13 = 5231.13
Without subsidy:
4034.13 + 849*3 = 6581
OK!...... I switch to 130 plan + 45 for 3 lines (I can get 30 gb, promo it is over, but they give it to me) whole plan with discount 151 dollar OMG I save 168.17-151=17.17 per month!!!!!!!!

May be even more there is tax savings on 17.17
Let assume it is 20 dollars (even 23 - I will have free international texts)
151-(23-17.17)=~145 dollars (with tax adjustment)
145*24+849*3= 6027 per 2 years
BUT I travel and I use 300-400 dollars per year in roaming lets have a mean here 350 per year = 700 per two years.
Total I will pay for Att is 6027+700=6727+tax per 2 years
Let's take t-mo 140 free lines all includeed + roaming almost free instead of 350
140*24+849*24=5907
Old plan with 2 years contracts and roaming and 3 upgrades 128 iphone 6:
5231+700=5931.13
New share 130 plan with discount with roaming and full price 3 iphones 128
6727
T-mobile with 3 iPhones 128
5907
Should I pay more Att for their 4B payment for nothing to T-mo, for thier Mexican carrier, for 18.2B auction, for their CEO premium salary.....
People can say t-mo has bad coverage and so on. Over the last year t-mo has great, huge improvement in my area. Soon they will have LTE12 and iphone 6s/7 will support it. Of couse t-mo network not as good as att, but for 820 dollars I switch. I don't want to pay 34 dollars extra per month.
Att! Now is your move!!!