T-mobile classic 1000 minutes and unlimited text plan?

Recently, my sister's friend gave her his iPhone 3g to her, but she already has a phone and gave it to me. A couple days ago my dad added a T-mobie line for me (We have the family plan that has 1000 minutes and unlimited text). Sometimes when i open the messaging/texting app on the iPhone, it says to turn on Wi-Fi or cellular data to access data. We don't have a data plan at all. Will i be charged if i have Wi-Fi + all cellular data turned off when i send or receive text messages?

No you won't be charged for having your Wi-Fi off but since tmobile doesn't really support iPhones that well and they don't even carry them i would just switch to a carrier like sprint, verizon, or at&t for faster services or just get a phone from tmobile that they support.

No you won't be charged since you have an unlimited texting plan, and you don't need data or Wi-Fi to access the texting. If they do charge you, call T-Mobile

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