With Verizon’s recent price cuts, AT&T has responded in similar fashion, offering an unlimited voice and data plan for iPhone users that costs $30 less. Previously you’d have to shell out $100 per month for the unlimited voice plan, and $30 for unlimited data; now you’ll be able to get both for just $100, which sounds great. If you’re thinking of switching over to this new unlimited voice and data plan, you can do so on Monday without having to pay a penalty or extend your contract via AT&T’s online account management tool. Press release.