Tomorrow, I am leaving the US and traveling internationally. I added Sprint's "Global Roaming" plan to my phone. The details of the plan are as follows: "Unlimited basic data with speeds up to 2G and unlimited text in any of our Sprint Global Roaming countries at no charge with calling for just $.20/min. For a full list countries, visit sprint.com/globalroaming" (emphasis added).
My question is - how can I turn off both 3G and LTE and only use 2G on my iPhone? As far as I can tell, the only options are to turn off LTE or to turn off data completely.
It's important for me to figure this out because I don't want my phone accessing 3G and/or LTE while I'm abroad in case it puts outrageous charges on my phone bill due to 3G and LTE not being part of the "Global Roaming" plan.
Does anybody know if what I'm asking is possible?
(In case it helps, I have an iPhone SE running iOS 10.3.1.)