So I just bought a new iPhone 5s with version 9.2.1 to use on Straight Talk's network. This phone is not an AT&T, Verizon, or Sprint phone - it's a Straight Talk phone, so right now I can only use it on the Straight Talk network (unless I somehow unlocked it). I don't currently have the phone active on Straight Talk because I'm still using my old phone (also an iPhone 5s, which has 9.3.2 and I know a jailbreak for that version doesn't exist). I was thinking about jailbreaking the new phone, because I'm pretty sure there's a 9.2.1 jailbreak. Here's my question. Should I wait to jailbreak until the phone is active on Straight Talk, or should I jailbreak now, or does it even matter? When I say jailbreak, I truly mean jailbreak as I don't care right now about unlocking it. If I do jailbreak it, is there a chance that I wouldn't be able to use it on Straight Talk's network? I don't think many people are using Straight Talk, which is why I'm a little concerned.