This is my deal. Last Nov I did buy one get one Iphone 13 from my local T Mobile store. Unfortunately I bought 128GB phones for my girls and they now need 256GB. I have a balance of $470 on each phone - though one is being paid for with monthly credits from T Mobile - so that phone isn’t really costing me anything.
My question is… what is the best way to go about upgrading the 128GB to 256GB. I don’t care if its a used/refurbished Iphone 13 from T mobile or a new Iphone 13 or even Iphone 14.
Can this be done without costing a fortune… my monthly bill is $160 for all my lines and I really don’t want it to increase too much.
Any input would be great.